JP2002279462A - System and method for radio communication on toll road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct operations at break downs or regular maintenance and inspections, while continuing an ETC service in an ETC main line system which is to be introduced in the main line of a highway. SOLUTION: The ETC main line system comprises a currently servicing system road side machine 10 for performing an ETC processing for a vehicle-mounted device 30, mounted on a vehicle running on a main line by transmitting radio from a currently servicing system first antenna part 11 installed on the main line of the highway, monitoring the operating state of a preliminary system antenna part 21 operating at a time point, when the currently servicing system first antenna part 11 is recovered from a trouble, and operating the currently servicing system first antenna part 11 and a currently servicing system antenna part 13, if an error occurs on the preliminary system antenna part 21 and a preliminary system road side machine 20 for monitoring the currently servicing system road side machine 10 through a high-speed serial communication part 40, and when the operation of the currently servicing system road side machine 10 is stopped, and carry out for the ETC processing by the preliminary system antenna part 21 installed between the currently servicing first antenna part 11 on the main line and the currently servicing system second antenna part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system and a wireless communication method on a toll road such as a non-stop automatic toll collection system (hereinafter referred to as an ETC system) introduced on a toll road such as an expressway.

[0002]

2. Description of the Related Art An ETC system is mainly composed of a roadside device installed at a tollgate or the like on a toll road, a vehicle-mounted device mounted on a vehicle, an IC card set in the vehicle-mounted device, and the like.

[0003] Contract information for specifying a toll payment account is recorded in the IC card in advance. The vehicle-mounted device reads these data and transmits the data to the roadside device by wireless communication. Entrance information and billing result data processed and generated by the roadside device are wirelessly transmitted to the vehicle-mounted device. The vehicle-mounted device records the content received from the roadside device on the IC card.

[0004] In the ETC system having such a configuration, when the roadside machine breaks down or when a maintenance check is performed,
The target gates at the tollgates will be temporarily closed, and repairs and inspections will be performed with the equipment temporarily stopped. Where E
The TC system has multiple gates at the toll booth,
By opening gates other than the target gate, it is possible to continuously provide services to general users.

[0005]

Incidentally, in the future, not only toll booths but also roadside machines will be installed on the main line of toll roads and used as check barriers (introduction of ETC main line system). The check barrier is a place for checking the traffic (passing) of the vehicle.

However, when the roadside machine is installed on the main line, unlike the case of the toll gate, the vehicle runs on the road at high speed and the road width of the road itself is limited. It is difficult to regulate the traffic of vehicles when performing repair or inspection work during maintenance and inspection,
There was a problem that the ETC service itself had to be suspended.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and it is an object of the present invention to carry out work at the time of breakdown or maintenance and inspection while continuing the service of vehicle traffic processing by wireless communication on the main line of a toll road. An object of the present invention is to provide a wireless communication system and a wireless communication method on a toll road that can be used.

[0008]

In order to achieve the above object, a wireless communication system on a toll road according to the present invention is provided at predetermined intervals along a traveling direction of a vehicle traveling on the toll road. First, second, and third wireless communication means for performing predetermined processing on the vehicle by wirelessly communicating with the vehicle-mounted device of the vehicle in wireless communication zones formed by the first and second wireless communication zones; , Second
Monitoring means for monitoring the operating state of the third wireless communication means; and the second means when the monitoring means detects that the first wireless communication means that has been operating has stopped.
Means for operating wireless communication means to perform wireless communication, and allowing the second wireless communication means to continue operating even when the first wireless communication means recovers, to perform wireless communication, and When the monitoring means detects that the second wireless communication means has stopped, the first and third wireless communication means are operated to perform wireless communication, and the first wireless communication means is stopped. When the vehicle-mounted device of the vehicle that has wirelessly communicated with the communication unit and the third wireless communication unit perform wireless communication, a unit that stops operation of the third wireless communication unit is provided. .

The wireless communication system on a toll road according to the invention of claim 2 is sequentially installed at predetermined intervals along a traveling direction of a vehicle traveling on the toll road, and the wireless communication zone is formed in a wireless communication zone formed by each. Active first and second wireless communication means for performing predetermined processing on the vehicle by wirelessly communicating with the on-vehicle device of the vehicle; the active first wireless communication means and the active second wireless means A standby wireless communication unit that is interposed between the communication unit and performs predetermined processing on the vehicle by performing wireless communication with an on-vehicle device of the vehicle in a wireless communication zone formed by the first communication unit; The operating state of the wireless communication means is monitored via a high-speed communication line, and when it is detected that an abnormality has occurred in the working first wireless communication means, a standby system for operating the standby wireless communication means is provided. The side unit and the operation state of the standby system wireless communication unit are monitored via the high-speed communication line, and after the working first wireless communication unit is restored, an abnormality occurs in the standby system wireless communication unit. If detected, the first wireless communication means of the active system and the second wireless communication means of the active system are operated, and the vehicle-mounted device of the vehicle processed by the first wireless communication means of the active system is connected to the second wireless communication means of the active system. And a working roadside device for stopping the working second wireless communication means when wirelessly communicating with the wireless communication means.

A wireless communication system on a toll road according to a third aspect of the present invention is the wireless communication system on a toll road according to the second aspect, wherein the active roadside unit and the standby wireless communication unit each monitor wireless communication. When an abnormality occurs in the communication means, a control means is provided for switching and controlling each wireless communication means so as to avoid overlapping processing for the same vehicle and to avoid omission of processing.

According to a fourth aspect of the present invention, there is provided a wireless communication method according to the first, second, and third wireless communication means installed at predetermined intervals along a traveling direction of a vehicle traveling on a toll road. Monitoring the operating status of the first wireless communication unit while operating the first wireless communication unit; and operating the second wireless communication unit when the first wireless communication unit that has been operating is stopped; While the operation of the second wireless communication means is continued even after the recovery of the first wireless communication means, the operation of the second wireless communication means is continued.
Monitoring the operating status of the wireless communication means, and operating the first and third wireless communication means when the second wireless communication means that has been operating is stopped; A step of stopping the operation of the third wireless communication unit when the vehicle-mounted device of the vehicle that has wirelessly communicated with the wireless communication unit and the third wireless communication unit perform wireless communication. I have.

According to a fifth aspect of the present invention, there is provided a wireless communication method comprising: an active first wireless communication means and an active second wireless means which are sequentially installed at predetermined intervals along a traveling direction of a vehicle traveling on a toll road. Monitoring the operating status of the first wireless communication means while operating the first wireless communication means; and determining whether the active first wireless communication means has failed, Activating the standby wireless communication means interposed between the first wireless communication means and the second wireless communication means in the active system, and monitoring the operating status of the standby wireless communication means; If an abnormality occurs in the standby wireless communication means that has been operating after the means has been restored, the active first wireless communication means and the active second wireless communication means are operated, and the active wireless communication means is operated. Vehicle-mounted vehicle processed by the first wireless communication means But when performing the active system second wireless communication means and radio communication, it is characterized by having the steps of stopping the second radio communication means and said active system.

According to the present invention, when the first wireless communication means that has been operating is stopped, the second wireless communication means is operated to continue the wireless communication service. Then, after the first wireless communication unit is restored, the operation status of the second wireless communication unit is monitored while the operation of the second wireless communication unit is continued, and the second wireless communication unit that has been operating is If stopped, the standby first and third wireless communication means are operated to continue the service by wireless communication. And the first
When the vehicle-mounted device of the vehicle that has wirelessly communicated with the third wireless communication means and the third wireless communication means perform wireless communication, it is determined that there is no vehicle that has not been processed and the third wireless communication means is activated. Is stopped, the ETC service can be performed without stopping without restricting the running of the vehicle when the first wireless communication unit or the second wireless communication unit breaks down or maintenance is performed.

Further, according to the present invention, when the operating first wireless communication means is stopped while the operating first wireless communication means is being operated and its operating status is monitored,
The service is continued by operating the standby wireless communication means interposed between the active first wireless communication means and the active second wireless communication means, and the operation status of the standby wireless communication means is monitored. I do. Then, when the standby wireless communication unit that has been operating is stopped after the active first wireless communication unit is restored, the active first wireless communication unit and the active second wireless communication unit are stopped.
When the in-vehicle device of the vehicle processed by the first wireless communication unit of the vehicle performs wireless communication with the second wireless communication unit of the current system, the service is continued by operating the first wireless communication unit. Assuming that there is no vehicle that has not been processed between the system first wireless communication means and the active system second wireless communication means, the active system second wireless communication means is stopped. When the wireless communication means, the second wireless communication means in the active system, the active roadside device, the standby wireless communication device, the standby roadside device, etc. break down or perform maintenance and inspection, the wireless communication is performed without restricting the traveling of the vehicle. Service can be performed without interruption.

When an abnormality occurs in the radio communication means monitored by the active roadside unit and the standby roadside unit, each radio unit is designed to avoid duplicate processing for the same vehicle and to avoid omission of processing. Provision of the control means for switching and controlling the communication means can prevent confusion such as double billing, overlapping processing, and omission of processing.

That is, according to the present invention, it is possible to carry out work at the time of failure or maintenance and inspection while continuing the service of vehicle traffic processing by wireless communication on the main line of a toll road.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of an ETC main line system according to one embodiment of the present invention.

As shown in FIG. 1, the ETC main line system controls an active first antenna unit 11 installed on a toll road, for example, a main line of a highway, and the active first antenna unit 11. Working system roadside machine 10 and working system 1
Processing results of the standby system antenna unit 21 installed on the main line downstream of the antenna unit 11, the standby system roadside unit 20 for controlling the standby system antenna unit 21, and the active system roadside unit 10,
And a high-speed serial communication unit 40 for notifying the standby roadside unit 20 of fault and fault monitoring information, an on-vehicle device 30 mounted on a vehicle running on a highway, and an I / O set on the on-vehicle device 30
And a C card 50.

The working first antenna unit 11 forms a communication zone 11a, which is a first radio wave irradiation range, on the main line, and covers wireless communication with the vehicle-mounted device 30 in the range. The standby system antenna unit 21 is connected to the communication zone 1 on the main line.
A communication zone 21a, which is a second radio wave irradiation range, is formed at a predetermined position downstream of 1a, and wireless communication with the vehicle-mounted device 30 of the vehicle is covered within the range. The working second antenna section 13 forms a communication zone 13a, which is a third radio wave irradiation range, at a predetermined position downstream of the communication zone 21a on the main line, and performs wireless communication with the vehicle-mounted device 30 within the range. Cover.

That is, the protection system antenna 21 is disposed between the working first antenna 11 and the working second antenna 13.
The system is operated without interruption by installing and controlling the switching of each antenna unit.

[0021] ETC stands for Electronic Toll Collec.
This is an abbreviation for tion. The active first antenna unit 11 and the active roadside device 10 are referred to as first wireless communication means, and the standby antenna unit 21 and the standby roadside device 20 are referred to as second wireless communication means. Antenna unit 12 and working roadside machine 1
0 is referred to as third wireless communication means.

FIG. 2 is a diagram showing a configuration of a control system in the ETC main line system. The working roadside device 10 includes a wireless communication control unit 12 that controls the working first antenna unit 11.
A wireless communication control unit 14 for controlling the active second antenna unit 13; and a data processing control unit 15 for performing processing of wireless communication data by these wireless communication control units 12 and 14, processing of communication data with peripheral devices, and the like. And The processing of the communication data is, for example, a vehicle passing confirmation processing.

The standby roadside unit 20 includes the standby antenna unit 2
1 and a data processing control unit 23 for processing wireless communication data by the wireless communication control unit 22, processing communication data with peripheral devices, and the like.
And

The active roadside unit 10 and the standby roadside unit 20 are connected via a high-speed serial communication unit 40.
It is possible to exchange data in real time.
The high-speed serial communication unit 40 is, for example, 100 Mbps,
This is a communication line having a communication speed such as 00 Mbps.

As shown in FIG. 3, the vehicle-mounted device 30 has a CPU
31, a power supply unit 32, a memory 33, an IC card slot 34 into which an IC card is inserted, and wireless communication control for performing wireless communication with roadside wireless devices such as the main roadside wireless device 3 and the maintenance roadside wireless device 4. And a display unit 36 for displaying the results of communication with these roadside devices, the status of the vehicle-mounted device 30 and the status of the IC card 50. The vehicle-mounted device 30 stores an IC card 50 in the IC card slot 34 when performing wireless communication with the roadside apparatus.
Necessary data can be transmitted and received regardless of whether or not is mounted.

The IC card slot 34 has an IC card 50
Is mounted (set), and controls an interface function with the IC card 50. The memory 33 stores the vehicle length, vehicle height, number of axes, weight,
In addition to the vehicle information such as the use and features, an ID number (on-vehicle device ID) for identifying the on-vehicle device 30 from other on-vehicle devices is recorded in advance. The CPU 31 controls each unit. For example, the CPU 31 processes information read from the IC card 50 and stores a processing result in the memory 33.
The CPU 31 controls the wireless communication control unit 35 to transmit vehicle information, IC card 50 information, vehicle-mounted device 30 information, and the like stored in the memory 33 from the wireless communication control unit 35 and to control the wireless communication control unit 35. The information received at 35 is stored in the memory 33. The display unit 36 includes an operation unit operated by the user, and guides operation contents, warnings, and the like on a screen.

As shown in FIG. 4, the IC card 50 includes
A flash memory 97 capable of storing and reading information, an interface unit 98 for exchanging data with the IC card slot 34 of the vehicle-mounted device 2, and a CPU for controlling the interface unit 98 and the flash memory 97
99 are provided.

The flash memory 97 stores a user's bank account number, special contract information indicating whether discounted persons can be applied, and billing information such as the expiration date of the contract. Further, an ID number (IC card ID) for specifying the IC card 50 is stored in the flash memory 97 in advance, and when the vehicle enters the gate of the entrance tollgate of the ETC system, the passing date and time, Passage history information such as a gate number for specifying a tollgate, a vehicle type, and a card balance is stored as entrance information in association with an ID number.

This IC card 50 is an IC card of the vehicle-mounted device 30.
When inserted into the card slot 34, the validity of the vehicle-mounted device 30 is confirmed by exchanging signals with the CPU 31 through the IC card slot 34, and is stored in the memory 33 of the vehicle-mounted device 30 in its own flash memory 97 for the first time. The charging information and the like that have been sent are sent. Note that the ID number of the IC card 50,
The ID number of the vehicle-mounted device 30 is referred to as vehicle-specific information.

The operation of the ETC main line system will be described below with reference to the flowchart of FIG. FIG. 5 shows this E
It is a flowchart which shows the process of the standby system roadside apparatus of a TC main line system.

In the case of the ETC main line system, the standby roadside device 20 receives the ID numbers of the IC card 50 and the vehicle-mounted device 30 on which the ETC processing has been performed by the active roadside device 10,
The data is recorded in the internal memory (S101). This process is continuously executed until the standby roadside unit 20 detects a failure of the active roadside unit 10 (S102).

If the standby roadside unit 20 detects a failure of the active roadside unit 10, it starts wireless communication processing (S1).
03), and receives data necessary for the ETC process from the vehicle-mounted device 30 (S104).

At this time, if the ID number of the vehicle-mounted device 30 or the IC card 50 received by the standby roadside device 20 has already been processed by the active roadside device 10 (S105).
Yes), the ETC process is not performed (S105).

That is, the standby system roadside device 20 performs the ETC processing only on the vehicle-mounted device 30 that has not been processed by the active system roadside device 10, and transmits the ETC processing result to the vehicle-mounted device 30 (S106). . This processing is performed by the standby roadside unit 20.
Are continuously executed until the restart of the operation of the working roadside device 10 is detected (S107).

The working roadside unit 10 resumes operation (restart).
If this is the case (yes in S107), the standby roadside unit 20
Stops the wireless communication process (S108).

Next, a description will be given of the cooperative operation of a plurality of antennas (the active antenna units 11, 13 and the standby antenna unit 21) in the ETC main line system.

In this case, when a vehicle traveling on an expressway enters the communication zone 11a of the first active antenna unit 11 (S201), the active roadside unit 10 controls the first active antenna unit 11 to control the vehicle. The communication with the on-vehicle device 30 is performed (S202), information necessary for performing the ETC process is received from the on-vehicle device 30, and pass-through point information and billing information, which are the processing results, are transmitted to the on-vehicle device 30.

The active roadside device 10 notifies the standby roadside device 20 of information such as an ID number for specifying the vehicle-mounted device 30 and the IC card 50 that have undergone the ETC process through the high-speed serial communication section 40. (S203).

The standby roadside unit 20 receives the processed vehicle-mounted device 30 and the ID number of the IC card 50 from the active roadside unit 10 and records them in an internal memory. Failure monitoring is performed (S204).

The standby roadside unit 20 always communicates with the active roadside unit 10 through the high-speed serial communication unit 40, and when there is no response from the active roadside unit 10, a failure of the active roadside unit 10 or Operation stop is detected (S20
5).

When the standby roadside unit 20 detects the failure or the stoppage of the operation of the active roadside unit 10, the standby antenna unit 21 starts the ETC process by wireless communication (S2).
06). However, in this case, in the standby system roadside device 20, the vehicle-mounted device 30 or the IC
No ETC processing is performed on the card 50.

As a result, even when the active roadside device 10 fails, the standby roadside device 20 operates, so that the service can be provided by the standby roadside device 20 and the failed active roadside device can be provided without stopping the system. Restoration of the machine 10 becomes possible.

Thereafter, even when the working roadside device 10 is restored, the operation of the standby roadside device 20 is continued.

When the active roadside device 10 is restored (S20)
7), the standby roadside device 20 notifies the active roadside device 10 via the high-speed serial communication section 40 of information such as an ID number for specifying the vehicle-mounted device 30 and the IC card 50 that have performed the ETC process.

The active roadside device 10 receives the processed vehicle-mounted device 30 and the ID number of the IC card 50 from the standby roadside device 20 and records them in an internal memory or the like.
The failure monitoring of the standby roadside unit 20 is performed (S208).

Then, at some point, the communication from the standby roadside unit 20 to the active roadside unit 10 is interrupted, and the active roadside unit 10
Detects the failure or operation stop of the standby roadside unit 20 (S209), the active roadside unit 10
The antenna unit 11 and the active second antenna unit 13 start ETC processing by wireless communication (S210). It should be noted that, besides the time of the abnormality, for example, the system operator may perform maintenance and inspection work on the standby system roadside device 20, and in this case also, the standby system roadside device 20 stops operating.

In the active system second antenna section 13, the vehicle-mounted device 30 and the IC
No ETC processing is performed on the card 50.

Thereafter, the working roadside device 10 is switched to the working second device.
When the antenna unit 13 performs wireless communication with the on-vehicle device 30 of the vehicle, the on-vehicle device 30 and the IC card 50 are already processed by the active first antenna unit 11 from the obtained information. When it is detected (S211), the wireless communication process (operation) of the working second antenna unit 13 is stopped (S212), and E by only the working first antenna unit 11 is stopped.
The TC processing is performed. As a result, the original working roadside device 10 returns to the basic operating state. During this time, repairs are performed on the standby system roadside unit 20 and the standby system antenna unit 21 that have stopped operating.

As described above, according to the ETC main line system, a predetermined distance is provided along the traveling direction of the vehicle downstream of the active first antenna unit 11 of the active roadside unit 10 installed on the main line of the highway. The standby system antenna unit 21 of the standby system roadside unit 20 is installed, and the second active system antenna unit 13 is installed further downstream of the standby system antenna unit 21 so that the standby system roadside unit 20 is connected to the active system roadside unit 10. The standby roadside unit 20 starts the ETC processing instantaneously when the failure or the operation stop of the standby system is detected, and when the active roadside unit 10 is restored, the standby roadside unit 20 continues the ETC processing by the standby roadside unit 20. The roadside unit 10 monitors the operation state of the standby roadside unit 20. If the standby roadside unit 20 fails or stops operating, the two active units under the active roadside unit 10 are instantaneously operated. System antenna unit 1 , 13 start the ETC processing, and stop the operation of the working second antenna unit 13 when the vehicle processed by the working second antenna unit 11 is detected by the working second antenna unit 13. The wireless communication means can be switched without performing the overlapping process for the same vehicle, and without causing a processing omission to the vehicle passing through that point due to the stoppage of the standby roadside device 20,
When the active roadside device 10 or the standby roadside device 20 installed on the main line fails or during maintenance and inspection, it is possible to cope with the failure of the active roadside device 10 and the standby roadside device 20 without stopping the ETC service. Together with maintenance. As a result, the ETC main line system can be operated without interruption even when the antenna equipment on the main line breaks down or during maintenance and inspection.

Note that the present invention is not limited to only the above-described embodiment. In the above embodiment, the example of the roadside machine divided into two systems, the active system and the maintenance system, has been described.
In addition, for example, three antennas are sequentially arranged at predetermined intervals along the traveling direction of a vehicle traveling on a toll road, and a monitoring device that monitors the operation status of each antenna, and a monitoring result from the monitoring device. A control device for operating each antenna based on the antenna is installed, and when one of the antennas has an abnormality, switching of the antennas is performed by a single control device so as not to perform overlapping processing on the same vehicle and to avoid processing omission. Control may be performed.

[0051]

As described above, according to the present invention, the first, second, and third wireless communication means are sequentially installed at predetermined intervals along the traveling direction of a vehicle traveling on a toll road. Normally, when the first wireless communication unit stops operating while performing a predetermined wireless communication service for the vehicle by operating the first wireless communication unit and performing wireless communication with the vehicle-mounted device of the vehicle, Operating the second wireless communication means to continue the service, monitoring the operating status of the second wireless communication means while continuing the operation of the second wireless communication means even after the first wireless communication means recovers, If the second wireless communication means stops operating, the first wireless communication means and the third wireless communication means are operated to continue the service. ETC without restricting vehicle travel when performing -Bis can be carried out without a stop.

According to the present invention, two working wireless communication means are arranged along the traveling direction of a vehicle on a road, and a standby wireless communication means is interposed between the two working wireless communication means. Is operated, and when the operation of the first active wireless communication unit is stopped, the standby wireless communication unit is operated, and the first active wireless communication unit is restored during that time. When the standby wireless communication unit stops operating, the two active wireless communication units are operated to continue the service, and when there are no more unprocessed vehicles, the original one active wireless communication unit is stopped. Since the operation status is returned to the operating status by the communication means, even when the working wireless communication means and the standby wireless communication means break down or maintenance is performed, the service by wireless communication can be performed without stopping without restricting the traveling of the vehicle. it can.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of an ETC main line system according to one embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a control system of the ETC main line system.

FIG. 3 is a diagram showing a configuration of a vehicle-mounted device in the ETC main line system.

FIG. 4 is a diagram showing a configuration of an IC card set in the vehicle-mounted device of FIG. 3;

FIG. 5 is a flowchart showing processing of a standby roadside device of the ETC main line system.

FIG. 6 is a flowchart showing a cooperative operation between a standby roadside unit and an active roadside unit in the ETC main line system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Working roadside machine, 20 ... Standby system roadside machine, 30 ... Onboard equipment, 40 ... High-speed serial communication part, 50 ... IC card,
11: working first antenna unit, 11a: communication zone, 1
2 ... wireless communication control unit, 13 ... working system second antenna unit, 1
3a: communication zone, 14: wireless communication control unit, 15: data processing control unit, 21: standby antenna unit, 21a: communication zone, 22: wireless communication control unit, 23: data processing control unit.

Claims (5)

[Claims] 1. A vehicle that travels on a toll road and is sequentially installed at predetermined intervals along a traveling direction of the vehicle, and wirelessly communicates with an on-vehicle device of the vehicle in a wireless communication zone formed by each of the vehicles. First, second, and third wireless communication means for performing a predetermined process; monitoring means for monitoring the operating state of the first, second, and third wireless communication means; Means for operating the second wireless communication means to perform wireless communication when the monitoring means detects that the wireless communication means has stopped, and also when the first wireless communication means is restored. When the second wireless communication unit continues to operate and performs wireless communication, and when the monitoring unit detects that the second wireless communication unit that was operating has stopped, the first and second wireless communication units are stopped. 3 wireless communication means Is operated to perform wireless communication, and when the vehicle-mounted device of the vehicle that has wirelessly communicated with the first wireless communication means and the third wireless communication means perform wireless communication, the third wireless communication And a means for stopping the operation of the means. 2. The vehicle is installed in order at predetermined intervals along a traveling direction of a vehicle traveling on a toll road, and wirelessly communicates with an on-vehicle device of the vehicle in a wireless communication zone formed by each of the vehicles. Working first and working second wireless communication means for performing a predetermined process; interposed between the working first wireless communication means and the working second wireless communication means; A standby wireless communication unit that performs a predetermined process on the vehicle by wirelessly communicating with an on-vehicle device of the vehicle in a wireless communication zone; and an operating state of the active first wireless communication unit via a high-speed communication line. Monitoring, when it is detected that an abnormality has occurred in the active first wireless communication unit, the standby roadside unit that activates the standby wireless communication unit; and the operating state of the standby wireless communication unit. High-speed traffic Monitoring via a communication line, and when it is detected that an abnormality has occurred in the standby system wireless communication unit after the working system first wireless communication unit is restored, the working system first wireless communication unit is connected to the working system first wireless communication unit. When the vehicle-mounted device of the vehicle processed by the active first wireless communication unit performs wireless communication with the active second wireless communication unit, the second active wireless communication unit is activated. And a working roadside device for stopping the wireless communication means. 3. The wireless communication system on a toll road according to claim 2, wherein the active roadside unit and the standby wireless communication unit are connected to the same vehicle when an abnormality occurs in each of the monitored wireless communication units. A wireless communication system on a toll road, comprising control means for switching and controlling each wireless communication means so as to avoid overlapping processing and to avoid omission of processing. 4. The first wireless communication means of the first, second, and third wireless communication means installed at predetermined intervals along a traveling direction of a vehicle traveling on a toll road while operating the first wireless communication means. Monitoring an operation status; operating the second wireless communication unit when the first wireless communication unit that has been operating is stopped; and operating after the first wireless communication unit is restored. Monitoring the operation status of the second wireless communication means while continuing the operation of the second wireless communication means; and Operating the third wireless communication unit and the vehicle-mounted device of the vehicle that has wirelessly communicated with the first wireless communication unit, and the third wireless communication unit performs wireless communication. Stopping the operation of the wireless communication means. Wireless communication method according to claim Rukoto. 5. An active first wireless communication means and an active second wireless communication means which are sequentially installed at predetermined intervals along a traveling direction of a vehicle traveling on a toll road. Monitoring the operating status of the first wireless communication unit while operating the first wireless communication unit; and, when an abnormality occurs in the active first wireless communication unit, operating the first wireless communication unit and the active wireless communication unit. Operating the standby wireless communication means interposed between the active second wireless communication means and monitoring the operating status thereof; and operating after the active first wireless communication means is restored. When an abnormality occurs in the standby wireless communication unit,
The active first wireless communication means and the second active wireless communication means are operated, and the vehicle-mounted device of the vehicle processed by the first active wireless communication means is connected to the active second wireless communication means. Stopping the active second wireless communication means when performing wireless communication with the means.