JP2003151077A - Reverse running preventing system for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the reverse running in advance by warning the reverse running to a driver when it is determined that a vehicle is going to enter into a one-way street by reverse running. SOLUTION: This system comprises an inlet passage communication means Cx forming a communication area CAx of the electric wave for transmitting an inlet discriminating information, on the boundary of an approach path X and a parking area P, and the vehicle A is provided with an on-vehicle communicating means CA for receiving the inlet discriminating information in passing through the communication area CAx, an accessing means Ma for accessing a storage means M capable of reading out the information and writing the passage information, a reverse running determining means RV for determining the presence or absence of the writing of the passage information on the basis of a result of accessing the storage means M by the accessing means Ma, writing the passage record onto the storage means M by the accessing means Ma when the absence of writing is determined, and determining the reverse running of the vehicle A to the approach path X when the presence of writing is determined, and a warning generating means AL for generating the warning to a driver when the reverse running is determined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-way approach road that enters a service area from the main line of a highway, and uses a signal and sound to drive when detecting a vehicle trying to run backward from the parking area to the approach road. The present invention relates to a vehicle reverse running prevention system that issues a warning to a person.

[0002]

2. Description of the Related Art Conventionally, as such a system, there is a "vehicle monitoring device" described in Japanese Patent Application Laid-Open No. 10-269492. In this conventional device, outputs A and B of vehicle detectors 1a and 1b, which are arranged at regular intervals along the vehicle traveling direction, are input to a vehicle traveling direction determination unit 2 as shown in FIG. The vehicle traveling direction determination unit 2 determines the traveling direction of the passing vehicle from the time difference between the two outputs A and B. This determination result is input to the reverse running vehicle determination unit, and when it is determined that the vehicle is running in reverse, a warning is issued to the reverse running vehicle reporting device 4 and the normal running vehicle reporting device 5 installed on the road. Instruct to make a call.

Further, when the reverse running vehicle determination unit 3 determines the reverse running vehicle, the presence of the reverse running vehicle is notified to the road manager reporting device 6 installed in the road management office or the like. And
An image captured by the wide-area surveillance camera 7 installed on the corresponding road is captured and displayed on the TV screen of the road manager reporting device 6.

[0004]

In the conventional device, at least two vehicle detectors are installed at a predetermined interval in parallel on the one-way road along the traveling direction of the vehicle, and the vehicle travels based on the detection order of the vehicle detectors. I was determining if the vehicle was running in reverse. Therefore, if the vehicle does not actually enter the one-way vehicle, it cannot be determined whether or not the vehicle is running in reverse, and the vehicle traveling in reverse or entering normally cannot avoid an oncoming vehicle depending on the vehicle speed and may lead to an accident. There is a problem that there is.

The present invention has been made to solve the above-mentioned problems, and if it is determined before the vehicle that the vehicle is going to reversely travel to the one-way road before the passage, the driver concerned It is an object of the present invention to provide a vehicle reverse running prevention system that warns against reverse running and prevents reverse running.

[0006]

As shown in the basic configuration diagram of FIG. 1 (a), the vehicle reverse running prevention system according to the first aspect of the present invention allows the vehicle A to enter the parking area P from the main line W in one way. From the approach road X and the parking area P, drive the vehicle A to the main line W
In the land space provided with the exit road Z leading to, the entrance road communication means Cx forming the communication area CAx for transmitting the entrance identification information to the boundary between the approach road X and the parking area P is provided, and in the vehicle A, An in-vehicle communication unit CA that receives the entrance identification information when passing through the communication area CAx; and an access unit Ma that accesses a storage unit M that can read information and write passage information when receiving the entrance identification information,
Whether or not the passage information is written is determined from the access result of the storage unit M by the access unit Ma, the passage record is written in the storage unit M by the access unit Ma when it is determined that there is no writing, and the writing is determined when the passage information is written. Reverse running judging means R for judging the reverse running of the vehicle A to the approach road X
V and a warning generation means AL for issuing a warning to the driver at the time of reverse running determination. According to the present invention, the vehicle-mounted communication means CA of the vehicle A in the communication area CAx on the one-way approach path X outputs the entrance identification information to the entrance road communication means Cx.
If received, the storage means M is accessed by the access means Ma and the reverse running determination means RV is made to determine whether or not the passage record is written. If there is no written passage record, the parking area P is first entered from the approach road X. When it is determined that the vehicle is heading, the access means Ma writes the passage record in the storage means M. However, if it is determined that there is a passage record, it is determined that the vehicle A that has already entered the parking area P runs backwards to the approach road X, and the warning generation means AL issues a warning to the driver.

In the vehicle reverse running prevention system according to the second aspect of the present invention, there is provided a one-way approach path X that allows the vehicle A to enter the parking area P from the main line W and an exit path that guides the vehicle A from the parking area P to the main line W. In a land space provided with Z, an entrance road communication means Cx forming a communication area CAx for transmitting entrance information specifying an entrance is provided at a boundary between the approach road X and the parking area P, and the vehicle A is provided with the entrance road communication means Cx. The in-vehicle communication means CA that receives the entrance information when passing through the communication area CAx, the access means Ma that accesses the information readable / writable storage means M when the entrance information is received, and the storage means M by the access means Ma. The reverse running determination means RV that determines the reverse running of the vehicle A to the approach road X at the time of the read determination of the same entrance information that is received from the access result, and the reverse running determination Is obtained by a warning generating means AL for giving a warning to the driver. According to the present invention, the vehicle-mounted communication means CA of the vehicle A in the communication area CAx on the one-way approach road X outputs the entrance identification information to the entrance road communication means C.
If it is received from x, the storage means M is accessed by the access means Ma.
The access determining means RV determines whether or not the same entrance identification information is written, and if there is no entry identification information, the access means Ma determines that the vehicle heads for the parking area P for the first time from the approach road X. The identification information is written in the storage means M. However, if it is determined that the entrance identification information is present, it is determined that the vehicle A that has already entered the parking area P runs backwards to the entrance that has entered through the one-way road, and the warning issuing means AL is warned to the driver. Emit.

The entrance road communication means Cx in the vehicle reverse running prevention system according to the invention of claim 3 transmits a beacon number for identifying itself as entrance information. According to the present invention, when the vehicle-mounted communication means CA of the vehicle A in the communication area CAx on the one-way approach road X receives the beacon number for identifying itself from the entrance road communication means Cx, the storage means M is accessed. Access by Ma, and let the reverse running determination means RV determine whether or not the same beacon number is written. If there is no written beacon number, it is determined that the vehicle heads for the parking area P from the approach road X for the first time, and the access means Ma makes a beacon number. Is written in the storage means M. But,
If it is determined that the beacon number is present, it is determined that the vehicle A that has already entered the parking area P runs backwards to the entrance that has entered through the one-way road, and the warning is issued to the warning generation means AL.

The entrance road communication means Cx in the vehicle reverse running prevention system according to the invention of claim 4 is an entrance interrogator in the ETC system, and the onboard communication means is an onboard equipment in the ETC system, and the tollgate received from the entrance interrogator The entrance signal was stored in the storage means M as entrance information. According to the present invention, if the vehicle-mounted device receives the unique entrance information of the toll gate entrance signal at the entrance interrogator in the communication area CAx on the one-way approach path X, the storage means M is accessed by the access means Ma. Then, the reverse running determination means RV determines whether or not the same entrance information is written. If the entrance information is not written, it is determined that the vehicle heads for the parking area P from the approach road X for the first time, and the access means Ma stores the entrance information. Let M write. However, if it is determined that there is entrance information, it is determined that the vehicle A that has already entered the parking area P runs backwards to the entrance that has entered through the one-way road, and the warning generation means AL warns the driver. Emit.

As shown in the basic configuration diagram of FIG. 1 (b), the vehicle reverse running prevention system according to the fifth aspect of the present invention allows the vehicle A to enter the parking area P from the main line W by the one-way approach path X.
In the land space provided with the exit road Z that guides the vehicle A from the parking area P to the main line W, the entrance identification information is provided at the boundary between the approach road X and the parking area P for the vehicle A passing through this boundary. Bidirectional roadside communication means Cxb forming a communication area CAx for transmitting and receiving information from the vehicle A.
And the two-way road communication means Cxb transmitted from the vehicle side.
Warning generating means AL for issuing a warning to the driver based on the reverse running determination information received in step A, and receiving entrance identification information from the bidirectional roadside communication means Cxb in the vehicle A when passing through the communication area CAx, And the bidirectional road communication means C
Two-way vehicle-mounted communication means Cab for transmitting information to xb, access means Ma for accessing the storage means M capable of reading information and writing passage information when the entrance identification information is received, and the storage means M by this access means Ma. Whether or not the passage information is written is determined from the result of the access, and when it is determined that there is no writing, the access means Ma writes a passage record in the storage means M, and the reverse running determination of the vehicle to the approach road is made by the determination of the presence of the writing. At the same time, the vehicle is provided with a reverse running determination means RV for transmitting the reverse running determination information to the bidirectional vehicle-mounted communication means Cab. According to the present invention, the vehicle-mounted communication means CA of the vehicle A in the communication area CAx on the one-way approach path X outputs the entrance identification information to the entrance road communication means Cx.
If received, the storage means M is accessed by the access means Ma, the reverse running determination means RV determines whether or not the passage record is written, and if the passage record is not written, the parking area P is first entered from the approach road X. When it is determined that the vehicle is heading, the access means Ma writes the passage record in the storage means M. However, if it is determined that there is a passage record, it is determined that the vehicle A that has already entered the parking area P runs in the opposite direction to the approach road X, and the warning generation means AL arranged on the upper side of the entrance road is operated to drive on the road. Informing the passing vehicle of the occurrence of reverse running.

As shown in the basic configuration diagram of FIG. 1 (c), the vehicle reverse running prevention system according to the sixth aspect of the present invention allows the vehicle A to enter the parking area P from the main line W by the one-way approach path X.
In the land space provided with the exit road Z that guides the vehicle A from the parking area P to the main line W, the entrance identification information is provided at the boundary between the approach road X and the parking area P for the vehicle A passing through this boundary. Bidirectional roadside communication means Cxb forming a communication area CAx for transmitting and receiving information from the vehicle A.
And a reverse running determination means RV that determines the reverse running of the vehicle A based on the passage information from the vehicle A received by the bidirectional road communication means Cxb, and issues a warning to the driver based on the reverse running determination result. A warning generating means AL is provided, and in the vehicle A,
A bidirectional vehicle-mounted communication means C that receives entrance identification information from the bidirectional roadside communication means Cxb when passing through the communication area CAx and transmits information to the bidirectional roadside communication means Cxb.
When ab and the entrance identification information are received, the storage means M capable of reading information and writing passage information is accessed, the information is transmitted to the roadside by the two-way vehicle-mounted communication means Cab, and the entrance transmitted from the roadside. An access unit Ma for writing the passage information into the storage unit M according to the identification information is provided. According to the present invention, when the two-way vehicle-mounted communication means Cab of the vehicle A receives the entrance identification information from the on-road communication means Cx in the communication area CAx on the one-way approach path X, the storage means M is changed to the access means Ma. Access to access the contents of the storage means M to the two-way vehicle-mounted communication means Ca
b to the roadside, and the roadside reverse running determination means RV sends the passage record to the vehicle-mounted storage means M for storage if the transmitted information is not a passage record, while the information passes. If it is determined that it is a record, the parking area P has already been
It is determined that the entered vehicle A runs backwards on the approach road X, and the warning generation means AL arranged on the upper side of the entrance road is operated to notify the passing vehicle of the occurrence of reverse running on the road.

The vehicle reverse running prevention system according to the invention of claim 7 comprises an exit road communication means Cz forming a communication area CAz of a radio wave for transmitting exit identification information to the exit road Z, and the vehicle-mounted communication means on the side of the vehicle A. When the CA receives the exit identification information, the access means Ma erases the passage record stored in the storage means M. According to the present invention, the passage information stored in the storage means M is the exit road communication means C arranged in the exit road.
When the exit identification information is received when passing through the communication area CAz of z, the information is rewritten to the information before the entrance passage.

In the vehicle reverse running prevention system according to the eighth aspect of the present invention, the passage record stored in the storage device on the vehicle side is deleted after a predetermined time has elapsed since the entrance identification information was received. According to the present invention, the passage record stored in the storage device M on the vehicle side is deleted after a predetermined time has elapsed since the entrance identification information was received, so that the information transmission facility on the exit side is unnecessary.

As shown in the basic configuration diagram of FIG. 1D, the vehicle reverse running prevention system according to the ninth aspect of the present invention allows the vehicle A to enter the parking area P from the main line W by the one-way approach path X.
In a land space provided with an exit road Z that guides the vehicle A from the parking area P to the main line W, at the boundary between the approach path X and the parking area P, the vehicle-specific information of the vehicle A passing through this boundary is stored. Bidirectional roadside communication means Cxb forming a communication area CAx for transmitting a transmission command and receiving the vehicle-specific information transmitted from the vehicle A in response to the transmission command.
And a storage means M for passing and recording the received vehicle-specific information, and storing the stored vehicle-specific information on the basis of a match determination between the stored vehicle-specific information and the vehicle-specific information transmitted from the vehicle A in response to a transmission command. Reverse running determination means RV for determining reverse running of the vehicle
And a warning generation means AL for issuing a warning to the driver based on the reverse running determination result, and a vehicle A receives a command for transmitting vehicle-specific information from the bidirectional road communication means Cxb when passing through the communication area CAx. And bidirectional vehicle-mounted communication means Cab that transmits vehicle-specific information to the bidirectional roadside communication means Cxb in response to the transmission command, storage means M that stores the vehicle-specific information, and bidirectional vehicle-mounted communication means. Ca
The storage means M is accessed at the time of receiving the transmission command by b, and the access means Ma for transmitting the vehicle-specific information to the bidirectional vehicle-mounted communication means Cab is provided. According to the present invention, when the bidirectional vehicle-mounted communication means Cab of the vehicle A receives the radio wave in the communication area CAx on the one-way approach path X, the storage means M is accessed by the access means Ma and stored. The vehicle-specific information is compared with the information stored in the storage means M on the roadside, and if the two pieces of information do not match, the received vehicle-specific information is stored in the storage means M. After the vehicle has entered the parking area P, it is determined that the vehicle will run backwards on the approach road X, and the warning generation means AL arranged on the upper side of the entrance road is operated to notify the passing vehicle that the reverse running is occurring on the road.

The storage means M in the vehicle reverse running prevention system according to the tenth aspect of the present invention is a smart plate of an IC chip provided on the vehicle number plate, and is stored in the IC chip according to the transmission command to store vehicle-specific information. To send. According to the present invention, if the vehicle A receives a radio wave in the communication area CAx on the one-way approach path X, the vehicle unique information is transmitted from the smart plate to the upper side of the road, and the vehicle unique information stored in the storage means M. If the two pieces of information do not match, the received vehicle-specific information is stored in the storage means M. On the other hand, if the pieces of information match, the vehicle enters the parking area P and then runs backward to the approach path X. Determined to be
The warning generation means AL arranged on the upper side of the entrance road is operated to notify the passing vehicle of occurrence of reverse running on the road.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing each embodiment of the present invention, the outline of the present invention will be described with reference to FIG. For example, when a vehicle A enters a service area or a parking area (hereinafter referred to as a rest area Y) from the main line W on an expressway or the like, the vehicle A enters through a one-way approach path X. At this time, when it is detected by the entrance road system (not shown) that the vehicle A has passed through the boundary Q-Q between the approach road X and the rest area Y, the on-vehicle system of the vehicle A is wirelessly transmitted from the entrance road system. The passage is recorded.

When the vehicle B, which has already entered the rest area Y through the approach road X, tries to enter the approach road X and exit the main line W again after passing the boundary Q-Q 'from the rest area Y, The system checks whether there is a passage record by wireless communication from the entrance road system, and if there is a passage record, it is determined that the vehicle B passes the approach road X in the opposite direction, and the vehicle-mounted system warns that the reverse running is prevented. To the driver. Alternatively, the passage record is checked by the entrance road system, and if it is determined that the vehicle is running backward, the entrance road system issues a warning on the road.

Embodiment 1. Hereinafter, the vehicle reverse running prevention system according to the first embodiment will be described with reference to the accompanying drawings. FIG. 3 shows a vehicle A equipped with an in-vehicle system As1 for an on-road system S (entrance road system and exit road system) S provided on an approach road X from a main line W to a rest area Y and an exit road from the rest place Y to the main road. It is a figure which shows a traveling position relationship. In the present embodiment, the passage record of the vehicle, the reverse running determination, and the reverse running warning are performed on the in-vehicle system As1 side.

Communication between the on-road system S and the on-vehicle system As1 is performed by using dedicated narrow band communication. This in-vehicle system A
At the time of passing through the approach road, s1 sets a flag F = 1 in the ROM described later by wireless communication by the entrance road system Xs, and rewrites the flag to F = 0 by wireless communication by the exit road system when exiting from the exit road to the main line. . That is,
As shown in FIG. 3, when the vehicle A enters the communication area CA of the on-road system S, the on-vehicle system As1 communicates with the on-road system S and updates the flag to perform passage recording or record deletion.

FIG. 4 is a view showing the arrangement of the entrance road system Xs and the exit road system Zs in the vicinity of the rest area Y. The entrance road system Xs (substantially only an antenna) is arranged so that a communication area CAx can be formed on the boundary between the entrance road X and the rest area Y as shown in FIG. Also.
Exit road system Zs (substantially only antenna)
Is arranged so that the communication area CAz can be formed on the boundary between the rest area Y and the exit road Z. Therefore, the approach road X is used as a rest area Y
Vehicles traveling toward the communication area CAx have the flag F = 1 when passing through the communication area CAx, and vehicles passing through the exit road Z to the main line W from the rest area Y have flags F = 1 to F when passing through the communication area CAz. = 0, that is, the passing record is erased.

FIG. 5 is a block diagram showing the configurations of the on-vehicle system As1, the entrance road system Xs, and the exit road system Zs. In-vehicle system As
1 is the entrance road system Xs or the exit road system Z
The in-vehicle wireless device 19 that communicates each information with s and 5.8 GHz radio wave, the information received by the in-vehicle wireless device 19 is discriminated, and the flag corresponding to the information content is set in the ROM 12 or the information content is received. CPU 11a that determines whether or not the vehicle is running backwards on the approach road, and a buzzer 1 that issues an alarm sound when the vehicle is running backwards
LED14 and LCD displaying warning message
Including 15. The in-vehicle wireless device 19 demodulates the electric wave received by the antenna AT _A , reads the information, and sends the information to the CPU 11a.

The entrance road system Xs is an in-vehicle system As.
1, a roadside wireless device 23 for transmitting entrance identification information, a ROM 22 storing the entrance identification information, and a ROM 2
2 includes the CPU 21a which reads out the entrance identification information from the input terminal 2, processes it as transmission data, and sends it to the on-road radio 23. Further, the exit road system Zs is a ROM 32 storing exit identification information,
It includes a CPU 31a which reads out exit identification information from the ROM 32, processes it into transmission data, and sends it to the on-road radio 33. The on-road radios 23 and 33 modulate the respective identification information fetched from the CPUs 21a and 31a with a radio wave of 5.8 GHz and send it to the antennas ATx and ATz.

To prevent the in-vehicle system from being powered off and the memory holding voltage being cut off and the stored contents being erased when the vehicle enters the rest area Y and the ignition switch is turned off to stop the vehicle. , Which is a non-volatile memory is used for the ROM 12, and the EEPROM is
The entrance identification information, which is a passage record, is stored in.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, if the power of the in-vehicle system As1 is turned on before the vehicle is put on the highway, the CPU
11a performs initialization processing to clear the identification information writing area and sets the flag in the ROM 12 to F = 0.

After it is confirmed that the power is on (step S1-1), the vehicle communicates with the entrance road system Xs on the way from the main road W of the highway to the rest area Y through the approach road X. When the vehicle-mounted system As1 receives the radio wave and enters the area CAx, the radio wave is demodulated and the identification information is read and input to the CPU 11a. The CPU 11a determines whether the received identification information is entrance identification information (step S1-3). If it is determined that the identification information received here is the entrance identification information, the ROM 12
It is determined whether or not the flag set to F = 1 (step S1-5).

Initially, when the vehicle enters the approach road X from the main line W, the flag is F = 0, so it is judged that the vehicle is not traveling in reverse and the flag in the ROM 12 is rewritten to F = 1 (step S1-13, 1-15). This makes the passage record R
It is recorded in OM12. When the vehicle A has stopped in a predetermined parking area of the rest area Y, the power supply of the vehicle-mounted system is turned off along with the turning off of the ignition key.

Next, in order to move the vehicle A from the rest area Y to the main line W of the expressway, the ignition key is turned on, and it is determined that the vehicle system As1 is powered on (step S1-
1) On receiving the radio wave, the in-vehicle system As1 demodulates the radio wave, reads the signal, and inputs the signal to the CPU 11a.
The CPU 11a determines whether or not the entrance identification information is received from the demodulated signal (step S1-3). If it is determined that the entrance identification information has not been received, it is determined whether the exit identification information has been received (step S1).
-17). However, if it is determined that the exit identification information is not received, it is determined that the vehicle A is traveling in the rest area Y and the process returns to step S1-1 (step S1-1).
7).

Next, after the vehicle has run, if it is determined that the identification information received from the road system is the exit identification information from the exit road system Zs (step S1-1).
7), the exit passage determination is performed (step S1-19). Then, the flag set in the ROM 12 is rewritten from F = 1 to F = 0, and the process returns to step S1-1 (step S1-
21). This means that the passage record in the ROM 12 has been erased.

However, if it is determined that the identification information received from the road system after the vehicle has traveled is the entrance identification information from the entrance road system Xs (step S1).
-3), it is determined whether the flag set in the ROM 12 is F = 1 (step S1-5). That is, it is determined whether there is a passage record. If it is determined that F = 1 at this time, when the vehicle A passes through the one-way approach road X and enters the rest station Y, the flag has already been set to F = 1, so that the rest It is judged that passing through the communication area CAx for transmitting the entrance identification information from the place Y causes the vehicle to reverse the approach road X (step S1-7).

If it is determined that the vehicle is running backwards, then FIG.
As shown in (b), L in the warning means HMI placed next to the instrument panel IP on the dashboard
The CD 15 displays "Reverse running. Please stop!" And blinks the LED 14 to ring the buzzer 13 to warn the reverse running (step S1-9).

After the vehicle A passes through the exit road Z and exits to the main road W, it enters the communication area CAx of the entrance road system Xs on the way to the rest station Y from the main road W through another approach road X, When the vehicle-mounted system As1 receives a radio wave, the radio wave is demodulated and the identification information is read and input to the CPU 11a.

The CPU 11a determines whether the received identification information is entrance identification information (step S1-3).
If it is determined that the received identification information is entrance identification information, the flag set in the ROM 12 is F =
It is determined whether it is 1 (step S1-5).

At this time, of course, the flag is rewritten to F = 0 when the flag passes from the previous rest area Y to the communication area CAz of the exit road system Zs. Therefore, the CPU 11
a interprets the flag F = 0, judges that it is not reverse running, rewrites the flag from F = 0 to F = 1, and returns to step S1-1 (steps S1-11 and S-13).

As described above, the in-vehicle system As1 records the passage of the entrance using the flag, so that the vehicle A can detect the reverse running before entering the approach road X and issue a warning to the driver.

In this embodiment, the entrance identification information and the exit identification information have different contents. However, as long as it is possible to distinguish the approach road and the exit road from each identification information, as shown in FIG. 8, adjacent rest stations A to C (YA to Y).
In C), there is no problem even if the same entrance identification information is used for each entrance path and the same exit identification information is used for each exit path.

Embodiment 2. In the first embodiment, if the content of the flag set at the time of detecting the entrance identification information is the same as the content of the flag set at the time of detecting the same entrance identification information again using the entrance identification information and the exit identification information, it is reversed. I decided to run.

Entrance road system Xs according to the present embodiment
As shown in FIG. 9, A to XsC uniquely identify each entrance road system XsA to XsC near each entrance X entering the rest area A to C (YA to YC) from the main line W through the approach road X. VICS (Ve) that forms a communication area CAx by irradiating a number (beacon number) or information with light or radio waves
hicle Information and Communication System).

Further, the exit road systems ZsA to ZsC according to the present embodiment are provided with rest areas A to C as shown in FIG.
VICS which forms a communication area Caz by irradiating light or radio waves with a unique number (beacon number) or information for identifying each exit road system XsA to XsC near each exit exiting from (YA to YC) to the exit Z (Vehicle
Information and Communication System).

According to the present embodiment, as shown in FIG. 10, the vehicle A has the communication area CA by the entrance road system Xs.
After passing x, the ROM (EEP) in the in-vehicle system As2
Beacon number for identifying the entrance roadside system Xs is stored in the ROM 12 and when the communication area CAz of the exit roadside system Zs is passed, the beacon number stored in the ROM 12 is rewritten to the beacon number for identifying the exit roadside system Zs. To be

In-vehicle system As2 according to the present embodiment
Is an antenna AT as shown in FIG. _AReceived by
In-vehicle radio that demodulates radio waves and extracts the beacon number signal
19, signal processing the beacon number taken out, ROM
12 and write to this ROM 12
Beacon number and the beacon extracted from the received radio wave
Matches the number and discrepancy, and alarms when the match is determined
Including the CPU 11b that sounds 18 to warn of reverse running
There is.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, when the power of the in-vehicle system As1 is turned on before the vehicle A is put on the highway, C
The PU 11b clears the beacon number writing area by performing initialization processing and clears the ROM 12 as well.

After it is confirmed that the power is on (step S2-1), the vehicle communicates with the entrance road system Xs on the way from the main line W of the expressway to the rest area Y through the approach road X. Upon entering the area CAx and receiving a radio wave, it is determined whether or not the beacon number B has been received (step S2-3). If the beacon number B is not received here, the process returns to step S2-1 and the electric wave is received again.

When the in-vehicle system As2 receives a radio wave,
The radio wave is demodulated, the beacon number B is read out, and the CPU 1
Enter in 1b. The CPU 11b determines whether or not the read beacon number B1 is stored in the ROM 12 (step S2-5).

Since the beacon number B1 is not stored in the ROM 12 at the beginning of the highway, the beacon number B is written in the ROM 12 (step S2-7), and the process returns to step S2-1. When the vehicle A has stopped in a predetermined parking area of the rest area Y, the power supply of the vehicle-mounted system is turned off along with the turning off of the ignition key.

Then, the ignition key is turned on to move the vehicle A from the rest area Y to the main line W of the expressway, and after it is determined that the power supply of the on-vehicle system As2 is turned on (step S2-1), the on-vehicle system As2 receives radio waves. Is received, it is determined whether or not the beacon number B is received (step S2-3). If it is determined that the beacon number B is not received here, it is determined that the vehicle is traveling in the rest area and the process returns to step S2-1 (step S2-
3).

However, if it is determined that the beacon number B is received from the radio wave received by the in-vehicle system As2, it is determined whether the beacon number B is already stored in the ROM 12 (step S2-5). When the beacon number is stored but is different from the received beacon number B, it is determined that the beacon number B is received from the exit roadside system Zs, and the beacon number B in the ROM 12 is updated to the received beacon number (step S2-9). , S2-7).

However, if it is determined from the comparison result in step S2-9 that the beacon numbers are the same, it means that the beacon number B already received in the communication area CAx of the entrance road system Xs is received, It is determined that the vehicle A will reversely run on the incoming one-way approach road (step S2-11). If a reverse run is determined,
The alarm 18 is sounded to warn of reverse running (step S
2-13).

Since the beacon for VICS is used for the on-road system here, the on-vehicle system also uses the conventional VICS.
Can be shared with compatible in-vehicle systems. As the warning means, a buzzer, a voice, an LED and an LCD can be used in addition to the alarm.

Embodiment 3. In the first and second embodiments, a roadside system is provided near the resting place entrance and the resting place exit, respectively, and the information transmitted from the resting system is compared with the already recorded information to run in the reverse direction or to run from the normal direction. It was judged. In the present embodiment, as shown in FIG. 13, the in-vehicle system As3 of the vehicle A passing through the gate TG of the toll gate.
In addition, an interrogator in an ETC system that emits an inquiry signal regarding vehicle identification information, fee payment information, etc. by radio waves is used. These interrogation signals include a toll gate entrance signal or toll gate exit signal that identifies the gate TG.

Further, in the present embodiment, the interrogators Xs and Zs arranged at the entrance and exit of the toll gate are connected to the boundary between the approach road X and the rest area Y and to the rest area Y and the exit passage Z as shown in FIG. Place on each of the boundaries.

As shown in FIG. 15, the vehicle-mounted system As3 demodulates the radio wave received by the antenna AT _A and extracts the toll gate entrance signal or the toll gate exit signal as rest entrance information or rest exit identification information. The wireless device 19 processes the extracted information and writes it in the ROM (EEPROM which is a non-volatile memory) 12, and
The CPU 1 which determines whether the information written in the ROM 12 and the information extracted from the received radio wave are in agreement or inconsistency, sounds an alarm 18 to warn the reverse running when determining the agreement, and causes the LCD 15 to display a warning message.
1c is included.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, when the power of the in-vehicle system As3 is turned on before the vehicle A is put on the highway, C
The PU 11c performs an initialization process to clear the writing area of each identification information and clears the ROM 12.

After it is confirmed that the power is ON (step S3-1), the vehicle A passes through the approach road X from the main line W of the highway to the rest station Y and then enters the interrogator Xs. Enter the communication area CAx and enter in-vehicle system As
When 3 receives the radio wave, the radio wave is demodulated and the identification information is read out and input to the CPU 11c.

The CPU 11c determines whether the received identification information is rest area entrance identification information (step S3-).
3). If it is determined that the received identification information is rest area entrance identification information, it is determined whether or not the identification information is recorded in the ROM 12 (step S3-5).

Initially, when entering an expressway, the identification information is not recorded, so it is judged that the vehicle is not traveling in reverse and the ROM 1
Rest area entrance identification information is written in 2 (step S3-1).
3, 3-15). When the vehicle A stops in a predetermined parking area at the resting place, the power supply of the vehicle-mounted system is turned off along with the turning off of the ignition key.

Next, if the ignition key is turned on in order to move the vehicle A from the rest area Y to the main line W of the highway, and it is determined that the power supply of the onboard system As3 is turned on (step S3-1), the onboard system As3 When the radio wave is received, the radio wave is demodulated and information is read out and input to the CPU 11c. Based on the demodulated information, the CPU 11c determines whether or not the rest area entrance identification information has been received (step S3-).
3). If it is determined that the rest station entrance identification information has not been received, it is determined whether the rest station exit identification information has been received (step S3-17). However, if it is determined that the rest station exit identification information is not received,
It is determined that the vehicle is traveling in the rest area, and step S3 is performed.
It returns to -1 (step S3-17).

Next, after traveling the vehicle, the received identification information is
If it is determined that the information is the rest station exit identification information from the exit interrogator Zs (step S3-17), the exit passage is determined. Then, the contents of the ROM 12 are cleared and the process returns to step S3-1 (step S3-19).

However, if it is determined that the received identification information is the rest station entrance identification information from the entrance interrogator Xs after the vehicle travels (step S3-3), the ROM 1
It is judged whether or not there is a signal recorded in step 2 (step S3).
-5). If it is determined that the information recorded at this time is rest area entrance identification information (step S3-
7) When the vehicle enters the rest area after passing through the one-way approach road, the rest area entrance identification information is already recorded, so the vehicle passes through the communication area for transmitting the rest area entrance identification information from the rest area Y. Doing so determines that the vehicle will run backwards on the approach road (step S3-9).

If it is judged that the vehicle is running in reverse, then FIG.
As shown in (b), L in the warning means HMI placed next to the instrument panel IP on the dashboard
The CD 15 displays "Reverse running. Please stop!" And sounds the alarm 18 to warn of reverse running (step S3-11).

After the vehicle exits the main line W through the exit,
When the vehicle-mounted system As3 receives a radio wave while entering the communication area CAx of the entrance interrogator Xs on the way to the rest station Y from the main line W toward the rest area Y, the radio wave is demodulated and the identification information is read out to the CPU 11c. To enter. CPU1
1c determines whether the received identification information is rest area entrance identification information (step S3-3). If it is determined that the received identification information is rest area entrance identification information, it is determined whether or not there is information recorded in the ROM 12 (step S3-5).

At this time, of course, since the ROM 12 is cleared at the time of exiting from the previous rest area to the main line W, there is no rest area entrance identification information, so it is judged that the vehicle is not running backward (step S3).
-13), the rest area entrance identification information is written in the ROM 12, and the process returns to step S3-1 (step S3-15).

The in-vehicle system records the toll gate entrance signal and toll gate exit signal transmitted from these interrogators in the in-vehicle system as rest station entrance identification information and rest station exit identification information,
Reverse running is determined by comparing the information from the interrogator with the information recorded each time it is received.

As described above, in this embodiment, by recording the passage of the vehicle by using the toll gate entrance signal, the on-vehicle system can be shared with the conventional ETC on-vehicle device. In the present embodiment, the ROM 12 stores the rest entrance identification information,
Although this record is deleted when the rest station exit identification information is received, the rest station exit identification information in the ROM 12 may be overwritten with the rest station exit identification information.

In the present embodiment, the rest area entrance identification information is recorded in the ROM 12 of the in-vehicle system As3. However, since the IC card is indispensable for the operation of the ETC vehicle-mounted device, this IC card is used for the rest area. The entrance identification information may be recorded.

Fourth Embodiment In the first to third embodiments, the in-vehicle system side performs the entrance passage recording, the reverse running determination, and the warning against the reverse running. However, in this embodiment, if the reverse running determination is made in the in-vehicle system, the entrance roadside system side To perform a warning action. Therefore, in the present embodiment, a dedicated narrowband communication (D) for bidirectional communication between the on-vehicle system and the on-road system is used.
SRC) will be described.

The vehicle reverse running prevention system according to the fourth embodiment will be described below with reference to the accompanying drawings. FIG. 17 shows an approach path X from the main line W to the rest area Y, and a main line W from the rest area Y.
FIG. 9 is a diagram showing a traveling positional relationship of a vehicle A equipped with an in-vehicle system As4 with respect to a road system (an entrance road system and an entrance road system) S provided on an exit road Z to. Bidirectional communication between the on-road system S and the on-vehicle system As4 is performed using dedicated narrow band communication.

The in-vehicle system As4 sets a flag F = 1 in a ROM, which will be described later, by radio communication by the entrance road system Xs when passing through the entrance road, and the main road W from the exit road Z.
When exiting, the flag is rewritten to F = 0 by wireless communication by the exit road system Zs. That is, as shown in FIG. 17, when the vehicle A enters the communication area CA of the road system S, the in-vehicle system As4 communicates with the road system S and updates the flag to perform passage recording or record deletion.

FIG. 18 is a view showing the arrangement of the entrance road system Xs and the exit road system Zs near the rest area Y. The entrance road system Xs is arranged on the boundary between the entrance road X and the rest area Y so that the communication area CAx can be formed. Also. The exit road system Zs is arranged on the boundary between the rest area Y and the exit road Z so that the communication area CAz can be formed. In addition, the in-vehicle system As near the entrance road system Xs
The revolving light L which operates at the time of reverse running judgment by 4 is installed. The entrance road system Xs including the revolving light L is used. The revolving light L is arranged at a position visible to the drivers of the reverse running vehicle and the oncoming vehicle.

The vehicle A traveling on the approach road X toward the rest station Y has the flag F = 1 when passing through the communication area CAx, and exits the exit road Z from the rest station Y on the main line W.
When passing through the communication area CAz, the flags are F = 1 to F = 0, that is, the passing record is erased.

FIG. 19 is a block diagram showing the configurations of the on-vehicle system As4, the entrance road system Xs, and the exit road system Zs. In-vehicle system A as shown
s4 discriminates the in-vehicle wireless device 19 that performs bidirectional communication of each identification information with the entrance road system Xs or the exit road system Zs by a radio wave of 5.8 GHz, the identification information received by the on-vehicle wireless device 19, and responds to the identification information. It includes a CPU 11d that sets a flag in a ROM (EEPROM, which is a non-volatile memory) 12 and determines whether or not the approach road is a reverse run according to the received identification information content. The in-vehicle wireless device 19 demodulates the radio wave received by the antenna AT _A and reads the identification information C
Send to PU 11d.

The entrance road system Xs is an in-vehicle system As.
4, the roadside wireless device 23 that transmits the entrance identification information, the ROM 22 that stores the entrance identification information, the entrance identification information is read from the ROM 22 and processed into transmission data, and the roadside wireless device 2
The CPU 21d includes a CPU 21d that outputs the reverse running determination result by the in-vehicle system As4 or operates the revolving light L when the on-road radio 23 receives the reverse running determination result.

The exit road system Zs is a ROM 32 in which exit identification information is stored, a CPU which reads the exit identification information from the ROM 32, processes it as transmission data, and sends it to the roadside radio 33.
31d is included. Each roadside radio 23, 33 is a CPU 21
Each piece of identification information fetched from d and 31d is modulated with a 5.8 GHz radio wave and sent to the antennas ATx and ATz.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, the entrance road system X
s is the CPU2 when the power is turned on (step S4-15).
The entrance identification information read out from the ROM 22 by 1d is sent to the roadside wireless device 23 by radio wave (step S4).
-17). Next, the CPU 21d reads the data in the ROM 22 as to whether or not the reverse running occurrence report has been received from the vehicle-mounted system As4 (step S4-19), and if not received, returns to step S4-17 to transmit the entrance identification information. If the reverse running occurrence report has been received, the revolving light L is operated (step S4-21).

On the other hand, in the in-vehicle system As4,
When the power of the vehicle-mounted system As1 is turned on before the vehicle A is put on the expressway, the CPU 11d performs initialization processing to clear the identification information writing area and sets the flag in the ROM to F = 0.

After it is confirmed that the power source is on (step S4-1), the vehicle A passes through the approach road X from the main line W of the expressway to the rest area Y and then enters the entrance road system Xs. When the vehicle-mounted system As4 receives the radio wave from the entrance road system Xs after entering the communication area CAx, the radio wave is demodulated and the identification information (information) is read and input to the CPU 11d.

The CPU 11d determines whether the received identification information is entrance identification information (step S4-3).
If it is determined that the received identification information is entrance identification information, the flag set in the ROM 12 is F =
It is determined whether it is 1 (step S4-5).

Initially, when the vehicle enters the approach road X from the main line W, the flag is F = 0, so it is judged that the vehicle is not traveling in the reverse direction and the flag in the ROM is rewritten to F = 1 (step S4-11, 4-13). When the vehicle A has stopped in a predetermined parking area of the rest area Y, the power supply of the vehicle-mounted system is turned off along with the turning off of the ignition key.

Next, if the ignition key is turned on to move the vehicle A from the resting place Y to the main line W of the highway, and it is determined that the power supply of the on-vehicle system As4 is turned on (step S4-1), the on-vehicle system As4 is When the radio wave is received, the radio wave is demodulated and a signal is read out and input to the CPU 11d.

The CPU 11d determines whether or not the entrance identification information is received from the demodulated signal (step S4-).
3). If it is determined that the entrance identification information has not been received, it is determined whether the exit identification information has been received (step S4-23). However, if it is determined that the exit identification information has not been received, it is determined that the vehicle A is traveling in the rest area Y and the process returns to step S4-1.

Next, after the vehicle has run, if it is determined that the identification information received from the road system is the exit identification information from the exit road system Zs (step S4-2).
3), the exit passage is determined (step S4-25). Then, the flag set in the ROM 12 is rewritten from F = 1 to F = 0, and the process returns to step S4-1 (step S4-
27).

However, if it is determined that the identification information received from the on-road system after the vehicle has traveled is the entrance identification information from the entrance on-road system Xs (step S4).
-3), it is determined whether the flag set in the ROM 12 is F = 1 (step S4-5). At this time, F = 1
If the vehicle A passes through the one-way approach road X and enters the rest area Y, the flag has already been set to F = 1, so that the entrance identification from the rest area Y is determined. It is determined that passing through the communication area CAx for transmitting information means traveling backward on the approach road X (step S4-7).

If it is determined that the vehicle is running in reverse, the in-vehicle wireless device 19
To report the occurrence of reverse running to the entrance road system Xs (step S4-9). As a result, the entrance road system Xs operates the revolving light L to issue an alarm to the reverse running vehicle and the oncoming vehicle (step S4-21).

After the vehicle A passes through the exit road Z and exits to the main road W, it enters the communication area CAx of the entrance road system Xs on the way to the rest area Y from the main road W through another approach road X, When the vehicle-mounted system As4 receives a radio wave, the radio wave is demodulated and the identification information is read and input to the CPU 11d.

The CPU 11d determines whether the received identification information is entrance identification information (step S4-3).
If it is determined that the received identification information is entrance identification information, the flag set in the ROM 12 is F =
It is determined whether it is 1 (step S4-5).

At this time, as a matter of course, the flag is rewritten to F = 0 at the time of exiting from the previous rest area to the main line W, so that the flag passes through the approach road X from the main line W and enters the communication area of the entrance road system Xs. It is judged that it has entered, and it is judged that it is not the reverse run, and the flag is rewritten from F = 0 to F = 1, and step S4-1.
(Step S4-13).

As described above, when the "reverse running detection" is performed on the in-vehicle system side, the result is reported to the entrance road system and the revolving light L is operated, so that the revolving light for warning installed on the road. The in-vehicle system can omit the warning means. Also, by connecting the entrance road system to the network provided on the expressway, it is possible to immediately notify the road management office of the detection result of the reverse running vehicle, so the road management office can grasp the situation in real time. be able to.

Embodiment 5. In the above-described fourth embodiment, the vehicle-mounted system performs the passage record and the reverse running determination process, and the result of the reverse running determination process is transmitted to the entrance road system to issue a warning on the entrance road.

In the present embodiment, the passage record of the on-vehicle system is read by the entrance road system, the reverse running determination processing is performed, and the warning operation is also performed. The operation of this embodiment will be described below with reference to the accompanying drawings. FIG. 21 is a diagram showing the arrangement of the entrance road system Xs and the exit road system Zs near the rest area Y. Entrance street system X
s is arranged on the boundary between the approach road X and the rest area Y so that the communication area CAx can be formed. Also. Exit road system Zs
Is arranged so that the communication area CAz can be formed on the boundary between the rest area Y and the exit road Z. In addition, the entrance road system Xs
A rotating lamp L that operates when the vehicle runs backward by the entrance road system Xs is installed in the vicinity of. The entrance road system Xs including the revolving light L is used.

FIG. 22 shows an approach path X from the main line W to the rest area Y.
FIG. 3 is a diagram showing a traveling positional relationship of a vehicle A equipped with an in-vehicle system As5 with respect to an entrance road system Xs provided in the vehicle. Bidirectional communication between the road system Xs and the in-vehicle system As5 is performed using dedicated narrow band communication in the communication area CAx. Further, if it is determined by the communication in the communication area CAx that the vehicle A runs backward on the entrance road system Xs side, the revolving light L is operated to issue a warning.

FIG. 23 is a block diagram showing the configurations of the on-vehicle system As5, the entrance road system Xs, and the exit road system Zs. In-vehicle system A as shown
s5 is a bidirectional in-vehicle wireless device 19 that communicates each identification information and flag with the 5.8 GHz radio wave to the entrance road system Xs or the exit road system Zs, the identification information received by the on-vehicle radio device 19, and the identification information Is set in the ROM (EEPROM, which is a non-volatile memory) 12, the content of the flag set in the ROM 12 is read and output to the in-vehicle wireless device 19, and the flag set in the ROM 12 by the command from the entrance road system Xs is set to F = 0 to F =
1 includes a CPU 11e that performs rewriting or the like.

The entrance road system Xs is an in-vehicle system As.
5, the bidirectional roadside radio 23 that transmits the entrance identification information to the vehicle 5, the entrance identification information is read from the ROM 22 that stores the entrance identification information, is processed into transmission data, and is output to the roadside radio 23. The CPU 21 that makes a reverse run determination based on the content of the flag transmitted from the CPU 21 and operates the revolving light L based on the reverse run determination result to issue a warning.
Including e.

The exit road system Zs is a ROM 32 storing exit identification information, a CPU that reads the exit identification information from the ROM 32, processes it as transmission data, and sends it to the roadside radio 33.
31e is included.

Before describing the operation of the present embodiment in detail with reference to the flowchart of FIG. 24, the outline of the present embodiment will be described. In the above-described embodiments, when the vehicle-mounted system receives the entrance identification information from the entrance roadside system, the flag is rewritten from F = 0 to F = 1 and the vehicle-mounted system records the entrance road passage.

However, in this embodiment, the in-vehicle system A is used.
When s5 returns a flag F = 0 in response to the entrance identification information transmitted from the entrance road system Xs, a command for rewriting the flag from F = 0 to F = 1 is issued from the entrance road system Xs. The in-vehicle system As5 rewrites the flag to F = 1 according to this command.

Therefore, the entrance road system Xs is
Confirms that the approach road X has come in from the normal direction and issues a rewrite command to F = 1, so the flag F = 1 in the ROM 12 of the in-vehicle system As5 confirms the approach road passage record of the in-vehicle system. And recorded.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, the entrance road system X
s causes the in-vehicle system As5 to record passage to the approach road. Therefore, the entrance roadside system Xs is turned on by the CPU 21e when the power is turned on (step S5-11).
The entrance identification information read from No. 2 is sent to the on-road radio 23 and transmitted by radio waves (step S5-13). In-vehicle system A that has received this entrance identification information in the communication area CAx
s5 is the flag F = from the ROM 12 by the CPU 11e.
0 is read and transmitted from the in-vehicle wireless device 19 to the entrance roadside system Xs by radio waves (steps S5-3 and S5-).
5).

Entrance system Xs is a radio wave (passage record)
Is received by the roadside radio 23 and demodulated (step S5-1
5) If, as a result of demodulation, it is determined that the flag is not F = 1 and the vehicle is not running backward (steps S5-17, 5-2).
3), a command from the CPU 21e (flag rewriting instruction:
Rewriting flag F = 0 to F = 1)
3 to the in-vehicle system As5 (step S5)
-25). When receiving the command, the in-vehicle system As5 rewrites the flag in the ROM 12 from the flag F = 0 to F = 1 (steps S5-7 and S5-9).

As described above, the in-vehicle system As5 sets the flag F = in accordance with the command from the entrance road system Xs.
If the vehicle A is stopped in a predetermined parking area of the rest area Y after being rewritten to 1, the power supply of the vehicle-mounted system As5 is turned off along with the turning off of the ignition key.

Next, the ignition key is turned on to move the vehicle from the rest area to the main line of the highway, and it is determined that the power supply of the on-vehicle system As5 is turned on (step S5-1).
When the vehicle-mounted system As5 receives the radio wave, it demodulates the radio wave and reads the signal and inputs it to the CPU 11e. CPU
11e determines whether or not the entrance identification information is received from the demodulated signal (step S5-3). If it is determined that the entrance identification information has not been received, it is determined whether the exit identification information has been received (step S5-2).
7). However, if it is determined that the exit identification information is not received, it is determined that the vehicle A is traveling in the rest area Y and the process returns to step S5-1.

Next, after the vehicle has run, if it is determined that the identification information received from the road system is the exit identification information from the exit road system Zs (step S5-2).
7), it is determined whether the exit has passed (step S5-29). Then, the flag set in the ROM 12 is rewritten from F = 1 to F = 0, and the process returns to step S5-1 (step S5-
31).

On the other hand, the entrance road system Xs receives the radio wave transmitted from the vehicle A, which has received the transmitted entrance identification information, by the roadside radio 23, demodulates the radio wave, and outputs the signal as CP.
It sends to U21e (step S5-13, S5-15).
The CPU 21e determines whether or not the passage record having the flag F = 1 is received from the demodulated signal (step S5-
17) If reception is not determined, the process returns to step S5-13, and the entrance identification information is transmitted again (step S5-).
15). If the result of determination in step S5-17 is that flag F = 1, it is determined that the vehicle is running in reverse and the revolving light L is activated to issue a warning (step S5-1).
9, 5-21).

In this way, by reporting the passage record of the on-vehicle system As5 to the entrance road system Xs and operating the revolving light L for judging the reverse running from the result, the common revolving light for warning installed on the road is shared. The determination process and warning means in the in-vehicle system can be omitted. Also, by connecting the entrance road system to the network provided on the expressway, it is possible to immediately notify the road management office of the detection result of the reverse running vehicle, so the road management office can grasp the situation in real time. be able to.

Sixth Embodiment In each of the above embodiments, the flag information based on the entrance identification information or the individual toll gate entrance signal in the information communicated between the vehicle-mounted device and the roadside interrogator in the ETC system is used as the information for determining the reverse running. I was there.

In the present embodiment, similarly, the vehicle number transmitted from the vehicle-mounted system (ETC vehicle-mounted device) when passing through the toll gate in the ETC system is used as information for reverse running determination. The ETC vehicle-mounted device stores the vehicle number that is unique to the vehicle for payment of the fee, and transmits the vehicle number by an inquiry from the interrogator, which is a roadside device, when passing through the toll booth. Therefore, in the present embodiment, the roadside device transmits a vehicle number transmission command to the vehicle that passes through the approach road and enters the rest area, and in response to this command, the vehicle exits the vehicle number transmitted from the in-vehicle system. Record until you pass the road. The roadside device compares the vehicle number transmitted from the vehicle-mounted system with the recorded vehicle number in response to the vehicle number transmission command, and when they match, determines a reverse run and issues a warning.

Note that the roadside device compares the recorded vehicle number with the vehicle number transmitted from the vehicle-mounted system in response to the vehicle number transmission command on the exit road, and deletes the recorded vehicle number when they match. To do.

The operation of this embodiment will be described below with reference to the accompanying drawings. FIG. 25 is a diagram showing the arrangement of the antenna ATx of the entrance roadside radio and the antenna ATz of the exit roadside radio near the rest area Y. The antenna ATx is arranged on the boundary between the approach road X and the rest area Y so that the communication area CAx can be formed. Also. The antenna ATz is arranged on the boundary between the rest area Y and the exit road Z so that the communication area CAz can be formed. Further, a rotating lamp L that operates at the time of reverse running determination by the road system is installed near the antenna ATx. The revolving light L is included in the entrance road system.

FIG. 26 is a block diagram showing the configurations of the on-vehicle system As6 and the on-road system Xs. As shown in the figure, the in-vehicle system As6 has an antenna ATx for the entrance roadside radio R1 and an antenna ATz for the exit roadside radio R2.
In response to the vehicle number transmission command received and received by the vehicle-mounted wireless device 19 and the vehicle-mounted wireless device 19, which transmits and receives the vehicle number transmission command and the vehicle number to and from
It includes a CPU 11f which reads out a vehicle number stored in a ROM (EEPROM which is a non-volatile memory) 12 and outputs it to an in-vehicle wireless device 19.

The on-road system S has an entrance on-road radio R1,
The exit road radio R2, the changeover switch SW for changing over the transmission and reception of radio waves to and from the radios R1 and R2, and the switching operation of the changeover switch SW are controlled, and each radio R1
A CPU 41 that outputs a vehicle number transmission command and inputs a vehicle number to R2, determines reverse running of the vehicle based on a comparison of both numbers, and operates a revolving light at the time of reverse running determination, the input vehicle RA that temporarily stores the number
Includes M42. The radios R1 and R2 are CPUs
The vehicle number transmission command input from No. 41 is 5.8 GHz.
The radio waves received by the antennas ATx and ATz are demodulated and the vehicle number is read out and input to the CPU 41.

FIG. 27 shows an approach path X from the main line W to the rest area Y.
FIG. 3 is a diagram showing a traveling positional relationship of a vehicle A equipped with an in-vehicle system As6 with respect to a communication area CAx of an antenna ATx provided in the vehicle. Road system Xs and in-vehicle system As6
Communication between them is performed using dedicated narrow band communication in the communication area CAx. Further, when it is determined that the vehicle A is running backward on the road system Xs side by the communication in the communication area CAx, the revolving light L is operated and a warning is issued.

Next, the operation of this embodiment will be described in detail with reference to the flowchart of FIG. The CPU 41 in the on-road system S turns on when the power is turned on (step S6-
7) Then, the changeover switch SW is switched to X, which is the entrance side (step S6-9), and a vehicle number transmission command is sent to the entrance roadside radio R1 and the command is transmitted by radio waves (step S6-10). This radio wave is emitted toward the communication area CAx by the antenna ATx.

Whether or not the vehicle number N transmitted from the vehicle A in response to the vehicle number transmission command is received is determined by reading the demodulated signal of the entrance roadside radio R1 (step S6).
-11). When the vehicle number N is not received, the changeover switch SW is changed over to the exit side Z (step S6).
-13), Send a vehicle number transmission command to the exit roadside radio R2 and transmit the command by radio waves (step S6-1).
5). This radio wave is transmitted by the antenna ATz to the communication area CA.
It is irradiated toward z.

Whether or not the vehicle number N transmitted from the vehicle A in response to the vehicle number transmission command is received is determined by reading the demodulated signal of the entrance roadside radio R1 (step S6).
-17). If it is determined that the vehicle number N has not been received, the process returns to step S6-7.

On the other hand, in the in-vehicle system As6, the CP
U11f turns on the power source by turning on the ignition key (step S6-1), and the in-vehicle wireless device 19 determines whether or not the vehicle number transmission command is received (step S6-).
3). If not received, the process returns to step S6-1.
If it is determined that the vehicle number transmission command is received, the vehicle number information stored in the ROM 12 is sent to the vehicle-mounted radio device 19, and the vehicle number N is transmitted to the on-road radio device R1 at the entrance of the roadside device S by radio waves. Transmit through the antenna ATx (step S6-5).

In the road system S, if it is determined that the vehicle number N is received through the entrance roadside radio R1 (step S6-11), the RAM (vehicle identification information recording section) 42 is referred to by the received vehicle number N. (Step S6-21). As a result of the reference, if it is determined that the received vehicle number N is not recorded (step S6-2)
3) The received vehicle number N is recorded in the RAM 42 (step S6-27). These processes are performed at regular time intervals.

Next, in the road system S, if it is determined that the vehicle number N is received through the entrance roadside radio R1 (step S6-11), the vehicle number N that has received the RAM (vehicle identification information recording unit) 42. As a result of the reference (step S6-21), it is determined that the received vehicle number N is recorded (step S6-23), and if it is determined that the vehicle is running in reverse, the revolving light L is operated to warn. Is issued (step S6-25).

Further, the roadside system S executes step S6-1.
If the vehicle number N transmitted from the vehicle-mounted system As6 is received in response to the vehicle number transmission command transmitted from the exit roadside radio R2 in step 5 (step S6-17), R
The information of the vehicle number N is deleted from AM.

As described above, according to the present embodiment, by using the vehicle number N transmitted from the ETC vehicle-mounted device to the vehicle-mounted system, the on-road system records passage of the approach road and reverse running determination, and Since the warning is issued by using the ETC interrogator in the ETC system for the on-road system, a command for transmitting the vehicle number can be issued to the ETC vehicle-mounted device, so that the ETC system can be more utilized.

In this embodiment, ET is used as vehicle-specific information.
Although the vehicle number stored in the C vehicle-mounted device is used, other than that, the serial number of the ETC vehicle-mounted device, the ID number of the IC card inserted in the vehicle-mounted device, or the like can be used. Further, although the ETC vehicle-mounted device is used as the vehicle-specific information source, other than that, for example, a storage device attached to the vehicle by a method that is difficult to remove (Japanese Patent Laid-Open No. 8-31519).
The unique information stored in (No. 7) may be used.
Further, as the vehicle-specific information, information of the vehicle number plate read by image recognition may be used.

The information on the smart plate may be used as the vehicle-specific information. Here, the smart plate writes the information of the number plate and the information described in the car registration file to the IC chip incorporated in the current number plate, and responds to the radio wave for the transmission command transmitted from the roadside device with this information. Is transmitted.

In the fourth, fifth, and sixth embodiments, the backward movement is warned by the operation of the revolving light, but in addition to the above, flash lights, flashes of LEDs, buzzers, alarms, sound by voice, and characters on large displays. Alternatively, a warning may be issued to a reverse running vehicle and an oncoming vehicle to reverse running by displaying an image or the like.

Seventh Embodiment In the third embodiment, the identification information unique to the entrance and exit of the rest area (the rest area entrance identification information,
An interrogator by the ETC system is provided to transmit the rest station exit identification information) to the in-vehicle device of the vehicle passing by radio waves.

In this embodiment, as shown in FIG. 29, a plurality of rest stations A, B, C (YA ...
In YC), interrogators (entrance interrogators) XsA, XsB, and XsC are arranged at the entrances of the rest stations A, B, and C, and each interrogator XsA, XsB, and XsC is its communication area CA.
The rest station A entrance signal to the rest station C entrance signal are transmitted to a to CAc. The exit interrogator Zs is provided only at the exit of the service section SA and transmits a service section end signal to the communication area CAe. The specific arrangement of the entrance interrogators XsA, XsB, and XsC is the boundary between the approach road X and each rest area Y as in the third embodiment.

As shown in FIG. 30, the on-vehicle system As7 demodulates the radio wave received by the antenna AT _A and extracts the toll gate entrance signal or the toll gate exit signal as rest entrance information or rest exit identification information. The radio 19 processes the extracted signal and writes it in the ROM (EEPROM which is a non-volatile memory) 12,
It is determined whether or not the signal written in the ROM 12 and the newly received signal match or not, and an alarm 18 is sounded at the time of matching determination to warn the driver of reverse running.
5 includes a CPU 11g for displaying a warning message.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, when the power of the in-vehicle system As7 is turned on before the vehicle A is put on the highway, C
The PU 11g performs an initialization process to clear the writing area of each identification information and clears the ROM 12.

After it is confirmed that the power is ON (step S7-1), the vehicle A passes from the service section SA of the expressway to the approach road X, for example, the rest area YA.
When the vehicle-mounted system As7 receives a radio wave while entering the communication area CAa of the entrance interrogator XsA on the way to, the radio wave is demodulated and the identification information is read out and input to the CPU 11g.

The CPU 11g determines whether or not the received identification information is the reception of the rest area entrance identification information K (step S7-3). If it is determined that the received identification information is the rest area entrance identification information K, it is determined whether or not the rest area entrance identification information K is recorded in the ROM 12 (step S7-5).

Initially, when entering the approach road X from the service section SA, there is no record of the rest station entrance identification information K, so it is judged that the vehicle is not running in reverse and the rest station entrance identification information K is written in the ROM 12 (step S7-11, 7-13).
If the vehicle A stops in a predetermined parking area of the rest area YA, the vehicle-mounted system As7 is turned on as the ignition key is turned off.
Turn off the power of.

Next, the ignition key is turned on to move the vehicle A from the rest area YA to the service section SA of the highway, and it is determined that the power supply of the on-vehicle system As7 is turned on (step S7-1). When received, the radio wave is demodulated and a signal is read out, and the CPU 11g
To enter.

The CPU 11g determines whether the rest area entrance identification information K is received from the demodulated signal (step S).
7-3). If it is determined that the rest area entrance identification information K has not been received, it is determined whether the service section exit identification information has been received (step S7-15).
However, if it is determined that the service section exit identification information is not received, the process returns to step S7-1.

Next, after the vehicle has traveled, if it is determined that the identification information received from the interrogator is the service section exit identification information from the exit interrogator Zs, the exit passage is determined (step S7-17). . Then, the rest area entrance identification information K recorded in the ROM 12 is cleared and the process returns to step S7-1 (step S7-19).

However, if it is determined that the identification information received from the interrogator is the rest area entrance identification information from the entrance interrogator XsA after the vehicle travels (step S7-
3), it is determined whether or not there is a signal recorded in the ROM 12 (step S7-5). If it is determined that the signal recorded at this time is the rest station entrance identification information K, the vehicle A has already passed the one-way approach road and entered the rest station YA, and has already entered the rest station entrance identification information K. Is recorded,
It is determined that passing through the communication area CAa for transmitting the rest area entrance identification information from the rest area YA means traveling backward on the approach road X (step S7-7).

If it is judged that the vehicle is running in reverse, then FIG.
As shown in (b), L in the warning means HMI placed next to the instrument panel IP on the dashboard
The CD 15 displays "Reverse running. Please stop!" And blinks the LED 14 to sound the buzzer to warn the reverse running (step S7-9).

The in-vehicle system As7 records the toll gate entrance signal and the toll gate exit signal transmitted from the interrogator XsA as the rest gate entrance identification information and the rest gate exit identification information as described above, and each time the information is received from the interrogator. Determine the reverse run by comparing with the information recorded in.

When a plurality of rest stations YA to YC each having a one-way approach path X are provided in the service section SA in this way, the exit interrogator Z is provided only at the exit of the service section SA.
s is provided, and ROM1 is provided by the signal from the exit interrogator Zs.
Since the rest area entrance identification information recorded in 2 is deleted, a single exit interrogator can be used regardless of the number of rest areas.

[0135]

According to the present invention, the one-way approach path X
In-vehicle communication means CA of vehicle A in communication area CAx in
However, when the entrance identification information is received from the on-road communication means Cx, the storage means M is accessed by the access means Ma and the reverse running determination means RV is made to judge whether or not the passage record is written, and the passage record is not written. For example, it is determined that the vehicle first enters the parking area P from the approach path X, and the access means Ma writes the passage record in the storage means M. However, if it is determined that there is the passage record, the vehicle that has already entered the parking area P. By determining that A is going backwards to the approach road X and issuing a warning to the driver from the warning generating means AL, there is an effect that the backward running vehicle can be detected immediately before entering the approach road X.

According to the present invention, the vehicle-mounted communication means CA of the vehicle A in the communication area CAx in the one-way approach path X is provided.
However, if the entrance identification information is received from the on-road communication means Cx, the storage means M is accessed by the access means Ma, and the reverse running determination means RV is made to judge whether or not the same entrance identification information is written, If there is no entry, it is determined that the vehicle is heading for the parking area P from the approach road X for the first time, and the access means Ma writes the entrance identification information in the storage means M. However, if it is determined that there is entrance identification information, the parking area is already available. It is determined that the vehicle A entering P goes backwards to the entrance that has entered through the one-way road, and the warning generating means AL
By issuing a warning to the driver, it is possible to easily detect the vehicle that has passed through the approach road and detect the reverse running vehicle immediately before entering the approach road based on the detection result.

According to the present invention, the vehicle-mounted communication means CA of the vehicle A in the communication area CAx on the one-way approach road X is provided.
However, if the beacon number for identifying itself is received from the entrance road communication means Cx, the storage means M is accessed by the access means Ma.
Access, the reverse running determination means RV determines whether or not the same beacon number is written, and if the beacon number is not written, it is determined that the vehicle heads for the parking area P from the approach road X for the first time, and the access means Ma sets the beacon number. However, if it is determined that there is a beacon number, it is determined that the vehicle A, which has already entered the parking area P, runs backward to the entrance that has entered through the one-way road, and the warning issuing means is issued. By alerting the driver to the AL,
Even if the existing beacon system is used, the reverse running vehicle can be easily detected.

According to the present invention, if the vehicle-mounted device in the communication area CAx on the one-way approach path X receives the toll gate entrance signal and the unique entrance information at the entrance interrogator, the storage means M is accessed. Access to determine whether or not the same entrance information is written, and if the entrance information is not written, it is determined that the vehicle heads for the parking area P from the approach road X for the first time, and the access means Ma determines the entrance information. Is stored in the storage means M, but if it is determined that there is entrance information, the vehicle A that has already entered the parking area P
The effect that the reverse running vehicle can be easily detected by utilizing the existing ETC system by determining that the vehicle is going to reverse the entrance that has entered through the one-way road and issuing a warning to the warning generating means AL There is.

According to the present invention, the vehicle-mounted communication means CA of the vehicle A in the communication area CAx on the one-way approach road X is provided.
However, if the entrance identification information is received from the on-road communication means Cx, the storage means M is accessed by the access means Ma, and the reverse running determination means RV determines whether or not the passage record is written, and if the passage record is not written. , The access record Ma causes the access record Ma to write the passage record in the storage unit M, but if it is determined that there is the passage record, the vehicle A that has already entered the parking zone P Determines that the vehicle is going to reverse the approach road X, and activates the warning generating means AL arranged on the upper side of the entrance road to notify the passing vehicle of occurrence of reverse running on the road, thereby simplifying the device configuration on the vehicle side. Since other oncoming vehicles can be notified of the reverse running on the approach road, there is an effect that the safety against the reverse running can be further improved.

According to the present invention, when the bidirectional vehicle-mounted communication means Cab of the vehicle A receives the entrance identification information from the roadside communication means Cx in the communication area CAx on the one-way approach path X, the storage means M is accessed. The content of the storage means M is accessed by the means Ma and transmitted to the roadside by the two-way vehicle-mounted communication means, and the reverse running determination means RV on the roadside records the passage record onboard if the transmitted information is not the passage record. If the information is a passage record, it is determined that the vehicle A that has already entered the parking zone P runs in reverse to the approach road X, and the warning is arranged above the entrance road. Generating means A
By operating L to notify the passing vehicle of occurrence of reverse running on the road, there is an effect that operations from the reverse run determination to the warning occurrence can be performed quickly.

According to the present invention, the passage information stored in the storage means M is obtained by receiving the exit identification information when passing through the communication area CAz of the exit road communication means Cz arranged in the exit road.
Since the information is rewritten to the information before passing through the entrance road, erroneous passage information is not output when the entrance road is approached from the proper direction, and the system reliability is improved.

According to the present invention, the passage record stored in the storage device M on the vehicle side is deleted after a predetermined time has elapsed since the entrance identification information was received, so that the information transmission facility on the exit side is unnecessary. The effect is that the entire system can be simplified.

According to the present invention, when the bidirectional vehicle-mounted communication means Cab of the vehicle A receives the radio wave in the communication area CAx on the one-way approach path X, the storage means M is accessed by the access means Ma. The stored vehicle-specific information is compared with the information stored in the roadside storage means M, and if the two information do not match, the received vehicle-specific information is stored in the storage means M, while the information matches. If so, it is determined that the vehicle will run backwards into the approach road X after entering the parking area P, and the warning generation means AL arranged above the entrance road is operated to notify the passing vehicle of the occurrence of reverse running on the road. Then, by simply transmitting the vehicle-specific information on the vehicle side and performing the passage information management, the reverse running determination, and the warning operation on the roadside, there is an effect that the vehicle-side system can be extremely simplified.

According to the present invention, if the vehicle A receives a radio wave in the communication area CAx on the one-way approach road X, the vehicle-specific information is transmitted to the roadside from the smart plate and stored in the storage means M. Compared with the vehicle-specific information, if the two pieces of information do not match, the received vehicle-specific information is stored in the storage means M. On the other hand, if the information matches, the vehicle enters the parking area P and then enters the approach path X. It is determined that the vehicle is going backwards, and the warning generation means AL arranged on the upper side of the entrance is operated to notify the passing vehicle that the vehicle is going backwards. Therefore, the vehicle-side information is simply read out on the vehicle side for transmission. Since no equipment is required, the system can be extremely simplified.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of a vehicle reverse running prevention system according to the present invention.

FIG. 2 is a diagram illustrating an outline of the present invention.

FIG. 3 is a diagram showing a traveling position relationship of a vehicle with respect to a communication area in a road system.

FIG. 4 is a diagram showing a positional relationship between each on-road system and an approach road.

FIG. 5 is a diagram showing a configuration of a vehicle reverse running prevention system according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of the vehicle reverse running prevention system according to the embodiment.

FIG. 7 is a diagram showing an arrangement of warning means and a warning mode according to the present embodiment.

FIG. 8 is a diagram showing a positional relationship between each on-road system and an approach road at a plurality of rest areas.

FIG. 9 is a diagram showing a positional relationship between each road system and an approach road according to the second embodiment.

FIG. 10 is a diagram showing a traveling relationship of a vehicle with respect to a communication area in the road system according to the second embodiment.

FIG. 11 is a diagram showing a configuration of a vehicle reverse running prevention system according to a second embodiment.

FIG. 12 is a flowchart illustrating an operation of the vehicle reverse running prevention system according to the second embodiment.

FIG. 13 is a diagram showing a traveling relationship of a vehicle with respect to a communication area in the road system according to the third embodiment.

FIG. 14 is a diagram showing a positional relationship between each road system and an approach road according to the third embodiment.

FIG. 15 is a diagram showing a configuration of a vehicle reverse running prevention system according to a third embodiment.

FIG. 16 is a flowchart illustrating an operation of the vehicle reverse running prevention system according to the third embodiment.

FIG. 17 is a diagram showing a traveling relationship of a vehicle with respect to a communication area in the road system according to the fourth embodiment.

FIG. 18 is a diagram showing a positional relationship between each on-road system and an approach road according to the fourth embodiment.

FIG. 19 is a diagram showing a configuration of a vehicle reverse running prevention system according to a fourth embodiment.

FIG. 20 is a flowchart illustrating an operation of the vehicle reverse running prevention system according to the fourth embodiment.

FIG. 21 is a diagram showing a positional relationship between each on-road system and an approach road according to the fifth embodiment.

FIG. 22 is a diagram showing a traveling relationship of a vehicle with respect to a communication area in the road system according to the fifth embodiment.

FIG. 23 is a diagram showing a configuration of a vehicle reverse running prevention system according to a fifth embodiment.

FIG. 24 is a flowchart illustrating an operation of the vehicle reverse running prevention system according to the fifth embodiment.

FIG. 25 is a diagram showing a positional relationship between each on-road system and an approach road according to the sixth embodiment.

FIG. 26 is a diagram showing a configuration of a vehicle reverse running prevention system according to a sixth embodiment.

FIG. 27 is a diagram showing a traveling relationship of a vehicle with respect to a communication area in the road system according to the sixth embodiment.

FIG. 28 is a flowchart for explaining the operation of the vehicle reverse running prevention system according to the sixth embodiment.

FIG. 29 is a diagram showing a positional relationship between each road system and an approach road according to the seventh embodiment.

FIG. 30 is a diagram showing a configuration of a vehicle reverse running prevention system according to a seventh embodiment.

FIG. 31 is a flowchart illustrating an operation of the vehicle reverse running prevention system according to the seventh embodiment.

FIG. 32 is a configuration diagram of a conventional vehicle monitoring device.

[Explanation of symbols]

W main line P parking area A vehicle X approach road Z exit road CAx communication area Cx entrance Road communication means CA In-vehicle communication means M storage means Ma access method RV reverse running determination means AL warning generating means Cxb bi-directional road communication means Cab bidirectional vehicle communication means

Claims (10)

[Claims] 1. In a land space having a one-way approach road for allowing a vehicle to enter a parking area from a main line and an exit path for leading a vehicle to the main line from the parking area, an entrance is provided at a boundary between the approach path and the parking area. An entrance road communication means forming a communication area for transmitting identification information; an in-vehicle communication means for receiving the entrance identification information when passing through the communication area in the vehicle; and information reading and passing information when receiving the entrance identification information. Access means for accessing the writable storage means, and whether or not the passage information is written is determined based on the access result of the storage means by the access means, and when it is determined that there is no writing, the access means records the passage information in the storage means. And the reverse running determination means for determining the reverse running of the vehicle on the approach road when it is determined that there is the writing, and the driver when the reverse running is determined. Vehicle reverse run prevention system, characterized in that a warning generating means for issuing a warning. 2. In a land space having a one-way approach road for allowing a vehicle to enter a parking area from a main line and an exit road for guiding a vehicle to the main line from the parking area, an entrance is provided at a boundary between the approach road and the parking area. And an in-vehicle communication unit that receives the entrance information when passing through the communication area, and an information reading and writing when the entrance information is received. Access means for accessing a possible storage means, and reverse running judgment for judging the reverse running of the vehicle to the approach road at the time of judging the reading of the same entrance information as the received entrance information from the result of the access by the accessing means A system for preventing reverse running of a vehicle, comprising: means and a warning generation means for issuing a warning to a driver when a reverse run is determined. 3. The vehicle reverse running prevention system according to claim 2, wherein the entrance road communication means transmits a beacon number for identifying itself as entrance information. 4. The entrance road communication means is an entrance interrogator in an ETC system, the onboard communication means is an onboard equipment in an ETC system, and a toll gate entrance signal received from the entrance interrogator is stored in the storage means as entrance information. The vehicle reverse running prevention system according to claim 2, wherein: 5. In a land space provided with an approach road for one-way traffic that allows a vehicle to enter a parking area from a main line and an exit path that leads a vehicle from the parking area to a main line, at a boundary between the approach road and the parking area, Bidirectional roadside communication means for transmitting entrance identification information to the vehicle passing through this boundary and forming a communication area for receiving information from the vehicle, and transmitted from the vehicle side and received by the bidirectional roadside communication means Warning issuing means for issuing a warning to the driver based on the reverse running judgment information, wherein the vehicle receives the entrance identification information from the bidirectional road communication means when passing through the communication area, and the bidirectional road communication means. Two-way vehicle-mounted communication means for transmitting information to the vehicle, access means for accessing the storage means capable of reading information and writing passage information when the entrance identification information is received, Whether the passage information is written or not is determined from the result of the access of the storage means by the access means, and the passage record is written in the storage means by the access means when it is determined that there is no writing, and the vehicle to the approach road is determined by the presence of the writing. And a reverse running determination means for transmitting the reverse running determination information to the bidirectional vehicle-mounted communication means when the reverse running is determined. 6. In a land space having an approach road for one-way traffic that allows a vehicle to enter a parking area from a main line and an exit path that leads a vehicle to the main line from the parking area, at a boundary between the approach path and the parking area, From the vehicle received by the bidirectional roadside communication means, which forms the communication area for transmitting the entrance identification information to the vehicle passing through this boundary and receiving the information from the vehicle, The vehicle is equipped with a reverse running determination means for determining the reverse running of the vehicle based on the passing information and a warning generating means for issuing a warning to the driver based on the result of the reverse running determination. Two-way vehicle-mounted communication means for receiving entrance identification information from the communication means and transmitting information to the two-way road communication means, and reading information and writing passage information when the entrance identification information is received A storage means capable of accessing the storage means, transmitting information to the roadside by the two-way vehicle-mounted communication means, and writing passage information in the storage means according to the entrance identification information transmitted from the roadside. Vehicle reverse running prevention system characterized by. 7. The exit road communication means forming a communication area for transmitting exit identification information to the exit road, and the passage stored in the storage means by the access means when the exit identification information is received by the vehicle-mounted communication means on the vehicle side. 7. The vehicle reverse running prevention system according to claim 1, wherein the record is erased. 8. The vehicle reverse running prevention according to claim 1, wherein the passage record stored in the storage device on the vehicle side is deleted after a predetermined time has elapsed since the entrance identification information was received. system. 9. In a land space having an one-way approach path for allowing a vehicle to enter a parking area from a main line and an exit path leading the vehicle A from the parking area to the main line, a boundary between the approach path X and the parking area. And a two-way road communication means for forming a communication area for transmitting a vehicle-specific information transmission command to the vehicle passing through this boundary and receiving the vehicle-specific information transmitted from the vehicle in response to the transmission command. Storage means for recording and storing the received vehicle-specific information, and a vehicle reverse method based on a match determination between the stored vehicle-specific information and the vehicle-specific information transmitted from the vehicle in response to a transmission command. The vehicle includes a reverse running determination means for determining running and a warning generation means for issuing a warning to a driver based on the reverse running determination result. A bidirectional vehicle-mounted communication unit that receives a transmission command of unique information and transmits vehicle unique information to the bidirectional roadside communication unit in response to the transmission command; a storage unit that stores the vehicle unique information; A vehicle reverse running prevention system comprising: access means for accessing the storage means M when the transmission command is received by the on-vehicle communication means, and causing the two-way on-vehicle communication means to transmit vehicle-specific information. 10. The smart plate as an IC chip provided on a vehicle number plate as the storage means, and transmits the vehicle-specific information stored in the IC chip in response to the transmission command. Vehicle reverse running prevention system as described.