JP2007034730A - Drive support information providing system for vehicle and base station and in-vehicle device used for the system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive support information providing system for a vehicle capable of predicting movements of other ETC vehicles or the like at a tollgate of a toll road and preventing the contact accident of the vehicle or the like. <P>SOLUTION: By receiving present position information from the ETC in-vehicle device of an ETC vehicle advancing to the tollgate and transmitting the received present position information to ETC in-vehicle devices of all the ETC vehicles that have advanced to the tollgate, positions of the other ETC vehicles or the like are displayed on a screen by images classified by colors on the basis of the received present position information of the other ETC vehicles. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention, for example, corresponds to an ETC system in an ETC vehicle equipped with an ETC on-board device and a navigation device corresponding to an ETC system (non-stop automatic toll collection system) that automatically performs toll collection processing on a toll road. The present invention relates to a vehicle driving support information providing system that provides the position of another ETC vehicle by an image or the like when entering a toll booth.
The present invention also relates to a base station and a vehicle-mounted device used in the vehicle driving support information providing system.

As this type of known technology, an ETC-guided navigation device is known in which an ETC vehicle equipped with a navigation device and an ETC on-vehicle device can be reliably guided to an ETC gate at a toll gate on a toll road ( For example, see Patent Document 1).
This known technique is specialized in the technique of how to guide the ETC vehicle to the ETC gate, and does not touch on the safety aspect of the ETC vehicle.
JP 2000-146598 A

  In general, a guidance display board is installed in front of the toll booth to guide vehicles entering the gate to the gate. In the toll booth, the guidance display board displays “ETC” and “ETC / general” for each gate. Is installed so that the driver (user) of the vehicle that has entered the toll booth can know where to go.

  However, although the penetration rate of ETC on-board devices corresponding to the ETC system has increased to about 30% at present, the situation where ETC gates are frequently used has not yet been reached. On the other hand, there are many drivers who think that they are ETC vehicles only, and they pass through other vehicles and change the lane to the ETC lane forcibly, or they get lost when they enter the ETC lane by mistake. If this happens, the ETC vehicle will be honed and the vehicle will hurt and change lanes.

  Therefore, the present invention provides a vehicle driving support information providing system capable of predicting the trend of other ETC vehicles and the like at a toll gate on a toll road and preventing a vehicle contact accident and the like, and a base station used in the system And it aims at providing onboard equipment.

  The vehicle driving support information providing system according to the present invention is a vehicle detection means for detecting a vehicle equipped with an onboard device for automatically performing a toll collection process that enters the toll gate at a toll gate on a toll road. And when the vehicle is detected by the vehicle detection means, the first transmission means for transmitting information requesting the vehicle position information to the vehicle, and the position information indicating the position of the vehicle in the vehicle is acquired. A vehicle position acquisition unit and a second unit configured to receive information requesting the vehicle position information transmitted by the first transmission unit and transmit the vehicle position information acquired by the vehicle position acquisition unit to the toll gate; The transmission means and the toll gate receive the vehicle position information transmitted by the second transmission means, and transmit the received vehicle position information to the vehicle that has entered the toll gate. And a vehicle position notifying means for receiving the vehicle position information transmitted from the third transmitting means and notifying the position of another vehicle based on the received vehicle position information. is doing.

  In addition, the base station of the present invention is installed at a toll gate on a toll road, and performs wireless communication with an on-vehicle device for automatically collecting a usage fee mounted on a vehicle entering the toll gate. A vehicle detecting means for detecting a vehicle entering the toll gate, and when the vehicle is detected by the vehicle detecting means, requests vehicle position information from the vehicle-mounted device mounted on the vehicle. A first transmission means for transmitting information, and position information indicating the position of the vehicle transmitted from the vehicle-mounted device in response to information requesting the vehicle position information transmitted by the first transmission means; Receiving means and second transmitting means for transmitting the vehicle position information received by the receiving means to the vehicle-mounted device of the vehicle that has entered the toll gate.

  The on-vehicle device of the present invention is mounted on a vehicle traveling on a toll road, and is a vehicle-mounted device for automatically performing a toll collection process, which indicates the position of the vehicle on which the on-vehicle device is mounted. Vehicle position acquisition means for acquiring information, and first reception for receiving information requesting vehicle position information transmitted from a base station installed at the toll gate when the vehicle enters a toll gate on the toll road A first transmission means for transmitting the vehicle position information acquired by the vehicle position acquisition means to the base station when information requesting the vehicle position information is received by the first reception means; Second receiving means for receiving the position information of the vehicle that has entered the toll gate transmitted from the base station, and reporting the position of another vehicle based on the vehicle position information received by the second receiving means. Vehicle position notification means It is equipped with.

  According to the present invention, it is possible to know in advance where other ETC vehicles and the like are traveling in the toll gate on the toll road, and the user can know the position of the other ETC vehicles and the like. It is possible to provide a vehicle driving support information providing system capable of predicting such trends and preventing a vehicle contact accident and the like, a base station used in the system, and an in-vehicle device.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 schematically shows the configuration of an ETC system to which a vehicle driving support information providing system according to an embodiment of the present invention is applied.

  In FIG. 1, an optical vehicle detection device 3 as a vehicle detection means for detecting a vehicle 2 entering the toll gate 1 is installed at the entrance of the toll gate 1 on the toll road. For example, as shown in FIG. 2, the vehicle detection device 3 is installed for each entrance lane L1, L2,... Of the toll gate 1, and includes a projector and a light receiver.

  The vehicle 2 is equipped with the ETC vehicle-mounted device 4 (hereinafter referred to as an ETC vehicle) and the ETC vehicle-mounted device 4 is not mounted or is not mounted with an ETC card. (Hereinafter referred to as a non-ETC vehicle).

  A plurality of ETC antenna devices 5 are installed in an upper portion corresponding to the vehicle detection device 3 at the entrance of the toll gate 1. The plurality of ETC antenna devices 5 are for performing radio communication by DSRC with the ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 entering the toll gate 1, for example, as shown in FIG. Are installed in each of the entrance lanes L1, L2,... Of the toll booth 1, and as shown in FIG. 3, a transmission / reception unit 24 and an interface unit 25 comprising an antenna unit 21, a microwave unit 22, and a modem unit 23 are provided. Consists of the subject.

  A plurality of position detection antenna devices 6 are installed in an upper part of the toll gate 1. The plurality of position detection antenna devices 6 detect the position of the ETC vehicle 2 by performing wireless communication by DSRC with the ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 that has entered the toll gate 1. For example, as shown in FIG. 2, it is installed at a predetermined interval so as to cover the entire area of the toll gate 1, and as shown in FIG. 3, the antenna unit 31, the microwave unit 32, The transmission / reception unit 34 and the interface unit 35 including the modulation / demodulation unit 33 are mainly configured.

  At the exit of the toll booth, a booth 8 is installed for each exit lane, and an optical vehicle as a vehicle detection means for detecting the vehicle 2 entering the booth 8 is located in front of the booth 8. A detection device 9 is installed. The vehicle detection device 9 is installed for each exit lane, and includes a projector and a light receiver.

  In front of the booth 8, a start control device 10 for controlling the start (traffic) of the vehicle 2 for each exit lane is installed, and the start control device 10 enters the start control device 10 before the start control device 10. A vehicle detection device 11 is installed as vehicle detection means for detecting the vehicle 2. The vehicle detection device 11 is installed for each exit lane, and includes a projector and a light receiver.

  A plurality of ETC antenna devices 12 are installed in an upper portion corresponding to the booth 8 at the exit of the toll gate 1. The plurality of ETC antenna devices 12 are for performing radio communication by DSRC with the ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 entering the booth 8, and like the ETC antenna device 5. It is configured.

  The ETC antenna device 5, the position detection antenna device 6, and the ETC antenna device 12 are each connected to a lane control device 13. In addition to the wireless communication control function using DSRC, the lane control device 13 controls each roadside device in accordance with the situation of the passing vehicle, and performs toll collection processing on the passing vehicle. It also manages information necessary for ETC processing, stores processed information, and has a transmission function for the toll gate ETC processing device 14.

  For example, as shown in FIG. 3, the lane control device 13 includes a CPU (Central Processing Unit) 41, a memory unit 42, a LAN control unit 43, a hub 44, a security unit 45, a PIO / SIO unit 46, and a wireless communication control. Unit (DSRC unit) 47, ETC processing unit 48, and roadside device interface unit 49.

  The CPU 41 instructs the ETC processing unit 48 to control the wireless communication control unit 47 and the security unit 45 based on the information obtained from the roadside device interface unit 49. Similarly, the security unit 45, the PIO / SIO unit 46, the LAN control unit 43, and the memory unit 42 are controlled.

  The LAN control unit 43 and the hub 44 mediate exchange of information between the toll gate ETC processing device 14 and various in-booth devices (such as roadside indicators and lane monitoring panels) and the lane control device 13.

The security unit 45 encrypts and decrypts wireless communication information according to instructions from the ETC processing unit 48.
The PIO / SIO unit 46 mediates exchange of parallel information and serial information from the roadside device interface unit 49.
The wireless communication control unit (DSRC unit) 47 transmits / receives information to / from the ETC antenna device 5 or the position detection antenna device 6 based on a command from the ETC processing unit 48.

  The ETC processing unit 48 controls the wireless communication control unit 47 and the security unit 45, returns the antenna device 5 or the position detection antenna device 6, and performs toll collection processing or the like by wireless communication with the ETC in-vehicle device 4.

  In this embodiment, the ETC vehicle-mounted device 4 has, for example, a navigation function (that is, an integrated ETC vehicle-mounted device and a navigation device), and has an external configuration as shown in FIG. Yes. That is, a liquid crystal display unit 52 for displaying a navigation screen or displaying driving support information as an image is provided on the front surface of the vehicle-mounted device main body 51, and for inserting an ETC card (IC card) 53. A card insertion slot 54 is provided. Further, on the side surface of the vehicle-mounted device main body 51, a luminance adjustment knob 55 for adjusting the luminance of the liquid crystal display unit 52, a volume adjustment knob 56 for adjusting the volume of the guidance voice, and a voice release hole 57 for emitting the guidance voice. Is provided.

  FIG. 5 schematically shows the configuration of the ETC vehicle-mounted device 4. That is, the ETC vehicle-mounted device 4 includes an antenna unit 61 for communicating with the ETC antenna device 5, a communication control unit 62 to which the antenna unit 61 is connected, a CPU 63 for overall control, a memory unit for storing vehicle information and the like. 64, a display control unit 65 for controlling the liquid crystal display unit 52, a card reader / writer unit 66 for reading and writing information with respect to the ETC card 53 inserted in the card insertion slot 54, a voice guidance unit 67 for voice guidance, luminance An operation unit 68 such as an adjustment knob 55 and a volume adjustment knob 56, a gyro sensor for acquiring the current position of the ETC vehicle 2 on which the ETC vehicle-mounted device 4 is mounted, a vehicle speed sensor 69 and the like, a position detection The antenna unit 70 for communicating with the antenna device 6, the autonomous traveling sensor unit 69, and the autonomous traveling vehicle to which the antenna unit 70 is connected. And it is configured to control unit 71 mainly.

Next, the operation in such a configuration will be described with reference to the flowcharts shown in FIGS.
When the vehicle detection device 3 detects the vehicle 2 entering the toll gate 1 (step S1), the vehicle entry detection signal is transmitted to the CPU 41 of the lane control device 13, and the CPU 41 that has received this signal receives the ETC processing unit 48. Is sent a command to transmit the encrypted vehicle information request signal to the vehicle 2 (step S2).

  The ETC processing unit 48 encrypts the vehicle information request signal by the security unit 45, and transmits the encrypted vehicle information request signal to the ETC antenna device 5 via the wireless communication control unit 47 (step S3). The ETC antenna device 5 receives the vehicle information request signal and transmits it to the ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 (step S4).

  The ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 receives the vehicle information request signal from the ETC antenna device 5 (step S5). When receiving the vehicle information request signal, the ETC on-vehicle device 4 receives the vehicle information of the vehicle (information indicating whether the vehicle is equipped with the ETC on-vehicle device) stored in the memory unit 64, and the ETC on-vehicle device. If the device 4 is mounted, information indicating whether or not the ETC card 53 is set is transmitted to the ETC antenna device 5 (step S6).

  The ETC antenna device 5 receives the vehicle information from the ETC vehicle-mounted device 4 and transmits it to the ETC processing unit 48 (step S7). The ETC processing unit 48 confirms that the vehicle 2 is an ETC vehicle based on the received vehicle information, and then encrypts the vehicle position information request signal by the security unit 45 and wirelessly transmits the encrypted vehicle position information request signal. It transmits to the ETC antenna apparatus 5 via the communication control part 47 (step S8).

  The ETC antenna device 5 receives the vehicle position information request signal and transmits it to the ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 (step S9). The ETC vehicle-mounted device 4 receives the vehicle position information request signal from the ETC antenna device 5 (step S10). When receiving the vehicle position information request signal, the ETC vehicle-mounted device 4 acquires the current position information (vehicle position information) of the vehicle 2 from the self-sustained travel sensor unit 69 and uses the acquired current position information as the self-sustained travel communication control unit. It transmits to the position detection antenna apparatus 6 via 71 and the antenna part 70 (step S11).

  The position detection antenna device 6 receives the current position information from the ETC vehicle-mounted device 4 and transmits the received current position information to all other position detection antenna devices 6 (step S12). Each position detection antenna device 6 that has received the current position information transmits the position information to the ETC in-vehicle devices 4 of all the ETC vehicles 2 in the communication area, and receives the current position information of the other ETC vehicles 2. (Step S13).

  The ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 receives the current position information of the other ETC vehicle 2 from each position detection antenna device 6, and based on the received current position information of the other ETC vehicle 2, The position of the other ETC vehicle 2 together with the position of the car is displayed on the liquid crystal display unit 52 by an image obtained by color coding (step S14).

  FIG. 10 shows a display screen example of the liquid crystal display unit 52. On the liquid crystal display section 52, an outline diagram 1 'of the toll gate 1 is schematically displayed, and the positions of other ETC vehicles 2 are displayed on the outline diagram 1' along with the position of the own vehicle. In the example of FIG. 10, for example, C1 is a host vehicle displayed in yellow, C2 is another ETC vehicle displayed in red, C3 is a non-ETC vehicle in which an ETC card displayed in blue is not set, C4 Indicates a non-ETC vehicle that is not mounted with the ETC on-vehicle device displayed in green. In FIG. 10, reference numeral 8 ′ indicates a display image of the booth 8.

  The driver (user) of the ETC vehicle 2 visually observes the display screen of the liquid crystal display unit 52, thereby speeding up the ETC vehicle, an ETC vehicle about to change course, or an ETC vehicle in which no ETC card is set. It is possible to predict trends in advance and pass through the toll gate with peace of mind.

  When the vehicle detection device 9 detects the vehicle 2 entering the booth 8 (step S15), the vehicle entry detection signal is transmitted to the CPU 41 of the lane control device 13, and the CPU 41 that has received the signal detects the ETC processing unit. A command is sent to 48 to transmit the encrypted vehicle information request signal to the vehicle 2 (step S16).

  The ETC processing unit 48 encrypts the vehicle information request signal by the security unit 45, and transmits the encrypted vehicle information request signal to the ETC antenna device 12 via the wireless communication control unit 47 (step S17). The ETC antenna device 12 receives the vehicle information request signal and transmits it to the ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 (step S18).

  The ETC vehicle-mounted device 4 mounted on the ETC vehicle 2 receives the vehicle information request signal from the ETC antenna device 12 (step S19). When receiving the vehicle information request signal, the ETC vehicle-mounted device 4 transmits the vehicle information and the like of the vehicle stored in the memory unit 64 to the ETC antenna device 12 and the vehicle position information of each position detection antenna device 6. Transmission is stopped (step S20).

  The ETC antenna device 12 receives the vehicle information from the ETC vehicle-mounted device 4 and transmits it to the ETC processing unit 48 (step S21). The ETC processing unit 48 confirms from the received vehicle information that the vehicle 2 is an ETC vehicle and that the usage fee collection process has already been completed (step S22).

  Thereafter, when the vehicle detection device 11 detects the vehicle 2 entering the start control device 10 (step S23), the vehicle entry detection signal is transmitted to the CPU 41 of the lane control device 13, and the CPU 41 that has received this signal receives the ETC. A gate opening command is sent to the processing unit 48 (step S24). When receiving the gate opening command, the ETC processing unit 48 opens the gate of the start control device 10 and permits passage of the ETC vehicle 2 (step S25).

  Next, when the vehicle detection device 11 detects that the ETC vehicle 2 has passed the start control device 10 (step S26), the vehicle entry detection signal is transmitted to the CPU 41 of the lane control device 13, and the CPU 41 that has received this signal. Sends a gate close command to the ETC processing unit 48 (step S27). When receiving the gate closing command, the ETC processing unit 48 closes the gate of the start control device 10 (step S28).

  In the above description, a detailed description of the usage fee collection processing is omitted, but the usage fee collection processing is performed by wireless communication between the ETC on-board unit 4 and the lane control device 13 via the ETC antenna device 5. It is. Since these fee collection processes are already well-known techniques, a detailed description thereof will be omitted.

  As described above, according to the above-described embodiment, the driver of the ETC vehicle looks at the display screen of the ETC on-board device at the toll gate on the toll road, and where other ETC vehicles travel in advance. And the driver knows the position of other ETC vehicles, etc., so it is possible to predict trends in other ETC vehicles, etc., and prevent vehicle contact accidents, etc. Can pass through.

  In particular, for example, as shown in FIG. 11, two roads 17 and 18 merge in front of the toll gate 1, and a wall 19 exists between the two roads 17 and 18, and the other roads Even when the state is not visible, an example of the display screen of the liquid crystal display unit 52 in the ETC vehicle-mounted device 4 in that case is as shown in FIG. 12, for example, so that other ETC vehicles 2 on the roads 17 and 18 A remarkable effect is obtained that the trend can be easily understood and the user can pass through the toll gate with peace of mind. In FIG. 12, reference numerals 17 ′, 18 ′, and 19 ′ indicate display images of the roads 17 and 18 and the wall 19, respectively.

  In the above embodiment, the case where the ETC vehicle-mounted device 4 having a navigation function is used has been described. However, the present invention is not limited to this, for example, the navigation device may be separated. Good. In that case, what is necessary is just to display the position of the other ETC vehicle 2 using the display part of a navigation apparatus.

Or you may comprise the ETC onboard equipment 4 as shown in FIG. 13 and FIG.
FIG. 13 schematically shows an external configuration of the ETC vehicle-mounted device 4. That is, on the front surface of the vehicle-mounted device 81, a liquid crystal display panel 82 that displays various messages in characters or displays driving support information in characters, a card insertion slot 83 for inserting an ETC card (IC card), And operation buttons 84 and 85 are provided. And the sound emission hole 86 which discharge | releases a guidance sound is provided in the side surface of the onboard equipment main body 81. As shown in FIG.

  FIG. 14 schematically shows the configuration of the ETC vehicle-mounted device 4. That is, the ETC vehicle-mounted device 4 includes an antenna unit 91 for communicating with the ETC antenna device 5, a communication control unit 92 to which the antenna unit 91 is connected, a CPU 93 for overall control, a memory unit for storing vehicle information and the like. 94, a display control unit 95 for controlling the liquid crystal display panel 82, a card reader / writer unit 96 for reading and writing information with respect to the ETC card inserted in the card insertion slot 83, a voice guidance unit 97 for voice guidance, operation buttons Communication with the operation unit 98 such as 84, 85, a self-sustained traveling sensor unit 99 including a gyro sensor and a vehicle speed sensor for acquiring the current position of the ETC vehicle 2 on which the ETC vehicle-mounted device 4 is mounted, and the position detection antenna device 6 Antenna unit 100, self-sustained travel sensor unit 99, and self-sustained travel communication control unit 1 to which antenna unit 100 is connected And it is configured to 1 mainly.

  The difference between the ETC vehicle-mounted device 4 shown in FIG. 13 and FIG. 14 and the ETC vehicle-mounted device 4 shown in FIG. 4 and FIG. 5 is that the driving support information is displayed in characters instead of images, and the others are the same. . Therefore, in the case of this example, the position of the other ETC vehicle 2 is displayed on the liquid crystal display panel 82 as characters, for example, “There is an ETC vehicle ahead and there is an ETC vehicle on the left side”. At the same time, guidance is also given by voice saying “There is an ETC vehicle in front, there is an ETC vehicle on the left side”.

  As a result, the driver (user) of the ETC vehicle 2 can easily confirm the situation in the vicinity by visually observing the display characters on the liquid crystal display panel 82 and listening to the voice guidance, and competing for one ETC gate. Decrease and you can safely pass through the toll booth.

1 is a schematic diagram schematically showing a configuration of an ETC system to which a vehicle driving support information providing system according to an embodiment of the present invention is applied. The schematic diagram which shows roughly the example of installation of the antenna apparatus in a toll booth. The block diagram which shows the structure of an antenna apparatus and a lane control apparatus in detail. The schematic diagram which shows roughly the external appearance structure of an ETC onboard equipment. The block diagram which shows the structure of an ETC onboard equipment roughly. The flowchart for demonstrating operation | movement. The flowchart for demonstrating operation | movement. The flowchart for demonstrating operation | movement. The flowchart for demonstrating operation | movement. The schematic diagram which shows the example of a display screen of a liquid crystal display part. The schematic diagram which shows roughly the example from which a toll booth differs. The schematic diagram which shows the example of a display screen of the liquid crystal display part with respect to FIG. The schematic diagram which shows roughly the other external appearance structural example of an ETC onboard equipment. The block diagram which shows the other structural example of an ETC onboard equipment roughly.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Toll booth, 2 ... Vehicle, 3 ... Vehicle detection apparatus (vehicle detection means), 4 ... ETC vehicle-mounted device, 5 ... ETC antenna apparatus, 6 ... Position detection antenna apparatus, 8 ... Booth, 9 ... Vehicle detection apparatus (vehicle) Detection means), 10 ... Start control device, 11 ... Vehicle detection device (vehicle detection means), 12 ... ETC antenna device, 13 ... Lane control device, 14 ... Tollgate ETC processing device, 52 ... Liquid crystal display (vehicle position notification) means).

Claims (13)

At the toll gate on the toll road,
Vehicle detection means for detecting a vehicle that is installed in an on-board device for automatically performing usage fee collection processing entering the toll gate;
When a vehicle is detected by the vehicle detection means, a first transmission means for transmitting information requesting vehicle position information to the vehicle;
In the vehicle,
Vehicle position acquisition means for acquiring position information indicating the position of the vehicle;
Second transmission means for receiving information requesting vehicle position information transmitted by the first transmission means, and transmitting vehicle position information acquired by the vehicle position acquisition means to the toll gate;
At the toll gate,
Receiving vehicle position information transmitted by the second transmission means, third transmission means for transmitting the received vehicle position information to a vehicle that has entered the toll gate;
In the vehicle,
Vehicle position notifying means for receiving vehicle position information transmitted by the third transmitting means and notifying the position of another vehicle based on the received vehicle position information;
A vehicle driving support information providing system comprising: A base station that is installed at a toll gate on the toll road and performs wireless communication with a vehicle entering the toll gate; and an on-board device that is mounted on the vehicle and automatically performs a toll collection process. Configured with
The base station
Vehicle detection means for detecting a vehicle entering the toll gate;
When a vehicle is detected by the vehicle detection means, the first transmission means for transmitting information requesting vehicle position information to the vehicle-mounted device mounted on the vehicle,
The in-vehicle device is
Vehicle position acquisition means for acquiring position information indicating the position of the vehicle on which the vehicle-mounted device is mounted;
First receiving means for receiving information requesting vehicle position information transmitted by the first transmitting means of the base station;
A second transmission unit configured to transmit the vehicle position information acquired by the vehicle position acquisition unit to the base station when information requesting the vehicle position information is received by the first reception unit;
The base station further includes:
Second receiving means for receiving vehicle position information transmitted by the second transmitting means of the vehicle-mounted device;
A third transmitting means for transmitting the vehicle position information received by the second receiving means to the vehicle-mounted device of the vehicle that has entered the toll gate,
The in-vehicle device further includes:
Third receiving means for receiving vehicle position information transmitted by the third transmitting means of the base station;
A vehicle driving assistance information providing system comprising vehicle position notifying means for notifying the position of another vehicle based on the vehicle position information received by the third receiving means. A base station that is installed at a toll gate on the toll road and performs wireless communication with a vehicle that enters the toll gate, and a plurality of vehicles that are installed at the toll gate and enter the toll gate. And an on-vehicle device that is mounted on the vehicle and automatically performs a toll collection process.
The base station
Vehicle detection means for detecting a vehicle entering the toll gate;
When a vehicle is detected by the vehicle detection means, the first transmission means for transmitting information requesting vehicle position information to the vehicle-mounted device mounted on the vehicle,
The in-vehicle device is
Vehicle position acquisition means for acquiring position information indicating the position of the vehicle on which the vehicle-mounted device is mounted;
First receiving means for receiving information requesting vehicle position information transmitted by the first transmitting means of the base station;
When the information for requesting the vehicle position information is received by the first receiving means, the vehicle position information acquired by the vehicle position acquiring means is transmitted to the antenna apparatus in the vicinity of the vehicle among the plurality of antenna apparatuses. Second transmission means,
The antenna device is
Second receiving means for receiving vehicle position information transmitted by the second transmitting means of the vehicle-mounted device;
Third transmission means for transmitting the vehicle position information received by the second reception means to another antenna device;
The vehicle position information transmitted by the third receiving means of the other antenna device is received, and the received vehicle position information is transmitted to the vehicle-mounted devices of all the vehicles in the communication area of the antenna device. Transmission means, and
The in-vehicle device further includes:
Third receiving means for receiving vehicle position information transmitted by the fourth transmitting means of the antenna device;
A vehicle driving assistance information providing system comprising: vehicle position notifying means for notifying the position of another vehicle based on the vehicle position information received by the third receiving means.   4. The vehicle driving assistance information provision according to any one of claims 1 to 3, wherein the vehicle position notification means displays the position of the vehicle and the position of the other vehicle on the screen by color-coded images. system.   The vehicle driving support information providing system according to any one of claims 1 to 3, wherein the vehicle position notification means notifies the position of another vehicle by at least one of voice and characters. The vehicle is equipped with a navigation device,
The vehicle according to any one of claims 1 to 3, wherein the vehicle position notifying means displays the position of the host vehicle along with the position of the other vehicle by a color-coded image on the display unit of the navigation device. Driving support information provision system. The on-vehicle device has a navigation function,
4. The vehicle driving support information according to claim 2, wherein the vehicle position notification means displays the position of the own vehicle and the position of another vehicle by color-coded images on the display unit of the navigation function. Offer system. A base station that is installed at a toll gate on a toll road and performs wireless communication with an on-board device for automatically collecting a toll collected on a vehicle entering the toll gate,
Vehicle detection means for detecting a vehicle entering the toll gate;
When a vehicle is detected by the vehicle detection means, a first transmission means for transmitting information requesting vehicle position information to the vehicle-mounted device mounted on the vehicle;
Receiving means for receiving position information indicating the position of the vehicle transmitted from the vehicle-mounted device in response to information requesting the vehicle position information transmitted by the first transmitting means;
Second transmitting means for transmitting the vehicle position information received by the receiving means to the vehicle-mounted device of the vehicle that has entered the toll gate;
A base station characterized by comprising: A vehicle-mounted device that is mounted on a vehicle traveling on a toll road and automatically collects usage charges.
Vehicle position acquisition means for acquiring position information indicating the position of the vehicle on which the vehicle-mounted device is mounted;
First receiving means for receiving information requesting vehicle position information transmitted from a base station installed at the toll gate when the vehicle enters a toll gate on the toll road;
When information requesting vehicle position information is received by the first receiving means, first transmitting means for transmitting the vehicle position information acquired by the vehicle position acquiring means to the base station;
Second receiving means for receiving position information of a vehicle that has entered the toll gate transmitted from the base station;
Vehicle position notifying means for notifying the position of another vehicle based on the vehicle position information received by the second receiving means;
The vehicle-mounted device characterized by comprising.   10. The vehicle-mounted device according to claim 9, wherein the vehicle position notifying means displays on the screen an image obtained by color-coding the position of another vehicle together with the position of the own vehicle.   The vehicle-mounted device according to claim 9, wherein the vehicle position notifying means notifies the position of another vehicle by at least one of voice and characters. The vehicle is equipped with a navigation device,
10. The vehicle-mounted device according to claim 9, wherein the vehicle position notifying means displays the position of the vehicle and the position of another vehicle by a color-coded image on the display unit of the navigation device. It also has a navigation function,
10. The vehicle-mounted device according to claim 9, wherein the vehicle position notifying unit displays the position of the own vehicle and the position of another vehicle by color-coded images on the navigation function display unit.

Images