JP2001184592A - Vehicle traffic support device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a vehicle traffic support device capable of notifying various kinds of information at a traffic light and capable of safely passing an intersection to a driver. An emergency vehicle 1 having an emergency vehicle communication device for transmitting emergency vehicle information, and a traffic support processor 300 connected to a traffic light 400 for receiving the emergency vehicle information transmitted by the emergency vehicle communication device and mutually transmitting and receiving. The traffic support processor 300 controls the traffic light 400 at the intersection to an all-red signal during the time zone when the emergency vehicle 1 passes through the intersection based on the emergency vehicle information received by the control signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular traffic support device for vehicles passing on a general road, and more particularly to a vehicular traffic support device suitable for performing control to give priority to emergency vehicles.

[0002]

2. Description of the Related Art A driver drives a vehicle by visually confirming blue "advance", yellow "attention", and red "stop" information obtained from a traffic signal at an intersection or the like. As a conventional method of controlling a traffic signal, there is a method of systematically controlling a traffic signal at an intersection or the like from a traffic control center or a method of manually controlling a traffic signal at an intersection to switch to all red or all red flashing. In addition, VICS using road information boards and car navigation is used as the information transmission method of road traffic information.
(Short for Vehicle Information & Communication System)
Etc. are known.

[0003] Also, Japanese Patent Laid-Open Publication No. Hei 6-20192 discloses that when an emergency such as a traffic accident occurs, a contact to be reported is selected according to the degree of emergency and the location information of the vehicle is reported. A system is disclosed. Also, JP-A-11-1204
No. 94 discloses that the site data is received by telephone or alarm from the site of fire or the like, the route to the site is read by the navigation system, the map and the route are displayed on the display, the police vehicle management system, the road Send to traffic information system. In a road traffic information system, traffic information is transmitted from a beacon road machine installed on a main road to general vehicles by radio wave or optical communication, or sound is output from a speaker. The traffic management control station transmits a control signal to each traffic light so that the emergency vehicle such as a fire engine passes through a planned route to be in a state suitable for the emergency vehicle to pass. There is disclosed an emergency vehicle operation management system that provides information such as a signal indicating that an emergency vehicle will pass and a scheduled passage time to general vehicles passing therearound via a beacon road machine. Also, Japanese Patent Application Laid-Open No. Hei 9-115091 discloses that the position information is always obtained, the position information is always transmitted to the central control center, a route to which the moving body should travel is generated based on the map information, and the control unit generates the route. There is disclosed a traffic centralized control system that gives an instruction to change a traffic light installed in an area to red.

[0004]

The highest incidence of accidents at intersections is one of the causes of this. The driver visually obtains the color information of the traffic light while driving and proceeds with the decision to stop. Therefore, when the sun's light is dazzling, or when visibility is poor due to rain or fog at night, it can be overlooked that the red light is on. The current light cycle of the traffic light is set by the traffic signal controller, and the light of the traffic light is switched in this light cycle, and the driver visually checks the traffic light information in the light cycle regardless of the field of view.

Emergency vehicles have the privilege of ignoring traffic lights while traveling while notifying that an emergency vehicle is passing by sounding a siren or the like, but they cannot cross quickly on a route with a large traffic volume. There is. Also,
A general vehicle has a problem that a traffic accident occurs when the sound of a siren cannot be heard, or when an emergency vehicle is found late at an intersection with poor visibility. In addition, since a general vehicle is provided with a means for knowing the time information at which each traffic light switches to blue, yellow, and red, the offset information between traffic lights, and the like, the driver has the time to change from a red signal to a green signal. There is a problem of not knowing that the traffic light has changed from red to blue. As described above, conventionally, it is not possible to automatically make all red or all red flashing dynamically and in real time, so that there is a problem that it is difficult for emergency vehicles to quickly arrive at the site. Also, JP-A-11-120494
The emergency vehicle operation management system described in Japanese Unexamined Patent Publication No. Hei 9-115091 is a police vehicle management system and a road traffic information system that controls a traffic light. Information is provided to general vehicles passing around it via beacon road machines, and if the police vehicle management system or road traffic information system fails, the system may not operate and cause confusion. Was. In addition, it has not been sufficiently considered to suppress unnecessary acceleration of a general vehicle to the next intersection.

[0006] A first object of the present invention is to provide a police car management system and a road traffic information system which can be used even if a fault occurs.
It is an object of the present invention to provide a vehicle traffic support device that can notify various types of information at a traffic signal and can safely pass through an intersection to a driver.

A second object of the present invention is to allow a general vehicle to travel smoothly, thereby suppressing unnecessary acceleration to the next intersection, and suppressing exhaust gas emission during signal waiting or traffic congestion. It is to provide a support device.

[0008]

In order to achieve the above object, a vehicle traffic support device according to the present invention receives a control signal by a traffic support processor which receives emergency vehicle information transmitted by an emergency vehicle communication device. Based on the emergency vehicle information, the traffic signal at the intersection is controlled to an all-red light during the time zone when the emergency vehicle passes through the intersection.

In addition, the traffic control center transmits a control signal from the emergency vehicle information of the emergency vehicle received via the communication device, which enables the emergency vehicle to travel to the destination preferentially, to an operation support processor of a traffic signal on the route. The operation support processor that has transmitted and received this control signal controls the traffic light to an all-red signal according to the control signal.

[0010] The traffic control center transmits speed information of a general vehicle from the emergency vehicle information of the emergency vehicle received via the communication device to the traffic light on the route on which the emergency vehicle travels via the operation support processor. Send to vehicle.

In addition, the speed information of the general vehicle from the emergency vehicle information of the emergency vehicle to the traffic light on the route on which the emergency vehicle travels is received via the operation support processor, and the speed information is displayed or voiced to the driver. Notification device for notifying the user.

The control signal is a cycle offset control signal of a traffic signal during a time zone in which the emergency vehicle passes. When it is determined that the emergency vehicle has passed through the intersection, the control signal has a cycle offset or a timeout value, and This is a control signal for returning to a state.

The traffic control center is informed of the travel position of the emergency vehicle via a signal controller, and the traffic control center is notified to set a priority offset for the route of the emergency vehicle. The deviation of the offset between traffic signals generated when an emergency vehicle passes is returned to a normal value by control from the traffic control center.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a vehicle traffic support system according to the present invention.

FIG. 1 is a configuration diagram of a vehicle traffic support device in the present embodiment. As shown in FIG.
00, the traffic support processor 3 connected to the traffic light 400
00 and a plurality of traffic lights 40 disposed at the intersection
The lighting control of the 0 lamp is performed. The traffic support processor 300 or the traffic light 400 is provided with an antenna 600, and wirelessly communicates with the traffic control center 500 via the antenna 600. The operation support processors 300 are connected to each other by an antenna 600,
Alternatively, information can be exchanged via a communication line. Traffic support processor 300 and general vehicle-mounted device 20
0 indicates that wireless communication is performed via the antenna 600 and the antenna 201 installed in the general vehicle 2. Traffic support processor 3
00 and the emergency vehicle-mounted device 100 perform wireless communication via the antenna 600 and the antenna 101 installed on the emergency vehicle 1. Here, the general vehicle 2 is a private car, a sightseeing bus, an intercity express bus, a regular service truck, and the like, and the emergency vehicle 1 is an ambulance, a fire engine, a police car, or the like.

The traffic support processor 300 includes an antenna 600
The speed information and the like that the general vehicle 2 should travel to the next intersection are transmitted to the general vehicle-mounted device 200 via the. The general vehicle-mounted device 200 displays the speed information and the like received via the antenna 201 on a display device mounted on the general vehicle 2 or notifies the driver by voice. When the emergency vehicle 1 passes through the intersection, a signal indicating that the emergency vehicle 1 passes is transmitted from the vehicle-mounted emergency device 100 to the passage support processor 300 via the antenna 101, and the signal is received via the antenna 600. The traffic support processor 300 includes a plurality of traffic lights 400 arranged at an intersection in accordance with a time zone when the emergency vehicle 1 passes.
Is controlled to flash all red. Upon detecting that the emergency vehicle 1 has passed the intersection, the traffic support processor 300 transmits a signal indicating that the emergency vehicle 1 has passed to the traffic control center 500. The traffic control center 500 that has received this signal transmits a control signal set to an offset at which the emergency vehicle 1 can travel preferentially to the destination to the traffic light 400 at the intersection where the emergency vehicle 1 passes next. In accordance with the transmitted control signal, the traffic support processor 300 turns the traffic light 400 located at the intersection.
Are all controlled to flash red. As described above, by controlling the traffic light 400 with priority given to the emergency vehicle 1, the changed cycle offset of the traffic light 400 is restored to the normal state by the control signal from the traffic control center 500 or has a timeout value. To restore the normal state.

FIG. 2 is a control block diagram when the emergency vehicle 1 passes through an intersection. Emergency vehicle equipment 10
0 is an ID input device 110 for registering an emergency vehicle ID, and destination information setting means 12 for setting a destination of the emergency vehicle 1.
0, azimuth determination processing means 13 for determining the traveling direction of the vehicle
0, a mobile communication control means 140 for performing communication through the mobile communication infrastructure.

The destination information of the emergency vehicle 1 input from the destination information setting means 120, the traveling direction information determined by the azimuth determination processing means 130, and the emergency vehicle ID input by the ID input device 110 move. The emergency vehicle information input to the body communication control means 140 is transmitted to the traffic support processor 300 via the mobile communication control means 140. That is, step 150 in FIG. 3 and step 1 in FIG.
As shown in 61 and 162, the emergency vehicle 1 sets the destination information and the emergency vehicle ID in advance, and sends the emergency vehicle I to the traffic support processor 300 on the way to the intersection which is the passing point.
D, the destination setting information and the traveling direction information are transmitted. or,
Intersection passing information can be added and transmitted. or,
The on-board emergency vehicle device 100 may include an emergency switch, and a processing unit for classifying an ambulance, a fire truck, a police car, and the like.

The traffic support processor 300 includes a mobile communication control unit 310 for receiving emergency vehicle information transmitted from the emergency vehicle 1, an emergency vehicle ID authenticating unit 320 for authenticating the emergency vehicle ID, and whether or not the received ID has been received. Accepted ID processing means 330 for determination, traffic control center communication means 340 for communicating with traffic control center 500, mobile communication radio wave reception determination means for determining whether or not radio waves from mobile communication control means 140 as an emergency vehicle 350, a signal control means 360 for generating a control signal for controlling the signal 400 and transmitting the control signal to the signal 400. Also, the traffic light 400
Is provided with a display control unit 410 for controlling lighting of a lamp by a control signal.

The traffic support processor 300, which has received the emergency vehicle information via the mobile communication control means 310, determines that the emergency vehicle ID is to be registered in the traffic control center 500 as shown in step 550 of FIG. Transmits the emergency vehicle ID to the traffic control center 500 and performs registration. As shown in step 551 of FIG. 7, when it is determined that the emergency vehicle ID has been received, the emergency vehicle ID authenticating means 320 and the accepted ID processing means 330 acknowledge the emergency vehicle ID,
When the approval is established, a control signal is transmitted to the traffic light control means 360. That is, as shown in step 151 of FIG. 3 and step 552 of FIG. 7, the traffic support processor 300 acquires the emergency vehicle ID, and performs emergency vehicle authentication determination in step 152. Step 153 in FIG. 3, Step 55 in FIG.
As shown in FIG. 3, if the ID is registered as an interrupt from the traffic control center 500, the emergency vehicle 1 that has already been notified is displayed.
Is determined to be heading for the intersection, and the process proceeds to the traffic signal control in step 154 in FIG.
As shown in (1), it is determined whether the radio wave from the emergency vehicle 1 can be received. As shown in step 152 of FIG.
If it is a new emergency vehicle ID, the emergency vehicle ID authentication is performed in step 153. As a result, if the vehicle is authenticated, the vehicle is registered as the emergency vehicle 1 passing through the intersection, and the process proceeds to the traffic signal control in step 154.

On the other hand, the information received via the mobile communication control means 310 is input to the mobile communication radio wave reception determination means 350, and it is determined whether or not the radio wave is from the emergency vehicle 1. If the signal is determined to be a radio wave, a control signal is transmitted to the traffic signal control means 360. Further, a control signal from the traffic management center 500 described later is transmitted to the traffic signal control means 360 via the traffic management center communication means 340. The traffic light control means 360 receiving these control signals performs an interrupt process on the traffic light cycle data, generates a control signal for causing the traffic light 400 to blink all red, and transmits the control signal to the display control unit 410 of the traffic light 400. Also, when the emergency vehicle 1 passes through the intersection with the traffic light 400, the intersection traffic light is switched to the all-red blinking display even when the course is a red light, and the traffic control center 500 is notified that the emergency vehicle 1 has caused the traffic light control. Then, the traffic control center 500 is notified of a request for giving priority to the course of the emergency vehicle 1.

When the authentication by the emergency vehicle ID authentication means 320 is established, a control signal is transmitted to the traffic control center communication means 340, and the traffic control center communication means 340 transmits the emergency vehicle ID, the destination information and the vehicle traveling direction information. The information is transmitted to the traffic control center 500. The transmitted information is received by the traffic control center 500 via the public line network.

The traffic control center 500 includes an operation support processor communication unit 510 for receiving information transmitted via a public line network, an emergency vehicle ID authentication unit 520 for recognizing an emergency vehicle ID, destination information and vehicle progress. Destination route setting means 530 for creating destination route information based on the direction information, and selection of an interrupt signal for generating a control signal for performing a signal interrupt process on the traffic signal 400 on the route set by the destination route setting means 530 Means 540.

Based on the emergency vehicle information received via the public network, step 156 in FIG. 3 and step 570 in FIG.
As shown at 571, the emergency vehicle ID authentication means 520 performs the approval of the emergency vehicle ID, and the approval is established, that is, the emergency vehicle ID received by the traffic control communication center means 340,
When the traffic control center 500 agrees with the emergency vehicle ID for which traffic signal control has been previously performed, a control signal is transmitted to the destination route setting means 530. Upon receiving the control signal, the destination route setting unit 530 creates destination route information based on the destination information and the vehicle traveling direction information.
If the destination information has already been created, as shown in step 572 in FIG. 8, it is determined whether or not the route is different from the set route. If it is determined that the route is not different, the destination route information is not re-created. Not performed. If the route is different from the set route, the destination route information stored in the traffic support processor 300 is reset, and the destination route setting unit 530 recreates the destination route information. As shown in step 575 in FIG. 8, the interrupt signal selecting means 540 performs a signal interrupt process on the signal 400 on the route through which the emergency vehicle passes based on the destination route information set by the destination route setting means 530. A control signal for execution is created, and data is transmitted to the selected traffic support processor 300 via the traffic support processor communication means 510. That is, the traffic control center 500 that has received the emergency vehicle ID performs authentication of the emergency vehicle ID, and if it is a legitimate ID, selects a traffic signal that performs an interrupt process from the destination information, and estimates the estimated arrival time of each intersection of the emergency vehicle. And the calculation of the offset giving priority to the emergency vehicle. The calculation result information and the emergency vehicle ID are transmitted to the traffic support processor 300 at each intersection to be interrupted. The operation support processor 300 is provided with a determination circuit for determining whether or not communication with the traffic control center 500 is performed normally. The operation support processor 300 and the traffic control center 50
When it is determined that communication with the traffic control center 0 has become impossible, the operation support processing device 300 controls the traffic light 400 without waiting for a reply from the traffic control center 500. Send and receive information. With such a configuration, priority control of the emergency vehicle can be performed even when a trouble occurs in the traffic control center.

Here, as shown in step 558 of FIG. 7, when it is determined that the emergency vehicle 1 has passed the traffic light 400 selected from the information from the emergency vehicle 1, for example, When it is determined by the mobile communication radio wave reception determining means 350 that the transmitted mobile communication radio wave can no longer be received, steps 560 and 5 in FIG.
As shown at 61, the traffic signal control means 360 generates a control signal for returning the offset changed for the emergency vehicle to the normal state, and transmits the control signal to the display control unit 410 to return the lighting control of the lamp to the normal state. That is, when the radio wave from the emergency vehicle 1 cannot be received, the signal data is returned to the normal value,
The traffic control center 500 is notified that the emergency vehicle 1 has passed the intersection. The emergency vehicle 1 may transmit the emergency vehicle information to the traffic support processor 300 via the mobile communication control unit 140 from the intersection immediately before the intersection to be passed, or from a plurality of fronts. Emergency vehicle information from just before the plurality of intersections before
0 may be transmitted to the traffic support processor 300.

FIG. 4 is a control block diagram when a general vehicle passes through an intersection. As shown in FIG. 4, the in-vehicle device 200 includes a mobile communication control unit 240 that receives information transmitted from the traffic support processor 300, and a direction determination processing unit that determines the direction of the vehicle from the received information. 230
A provided information processing means 220 for calculating a traveling speed based on the traveling direction data extracted by the direction discriminating processing means 230 and the next intersection cycle data and distance data received from the traffic support processor 300; And an information display section 210 for transmitting information edited by the provided information processing means 220 to the driver by display or voice.

In addition to the above-described means, the traffic support processor 300 edits the traffic signal cycle data holding the cycle data of the traffic light 400 and the offset information, and updates the traffic light cycle data up to the next intersection and the traffic light cycle data up to the next intersection. Signal emergency vehicle ID authentication means 32 for creating distance data
0 is provided. The traffic light cycle data to the next intersection and the distance data to the next intersection edited by the emergency vehicle ID authentication means 320 are stored in the mobile communication control means 31.
0 is transmitted to the mobile communication control means 240 of the general vehicle-mounted device 200. From the information received by the mobile communication control means 310 and the azimuth data of the own vehicle created by the azimuth discrimination processing means 230, the speed to be traveled is calculated by the provision information processing means 220. The traveling information edited by the provided information processing means 220 is transmitted to the driver by display or voice on the information display unit 210, and the driver drives on the road based on the information. Examples of the traveling information include a red light waiting time and information that if the vehicle travels at a speed of several kilometers per hour to a next traffic light, it can pass by a green light, and these information are stored in the data management unit of the traffic support processor 300. And continue to provide information to in-vehicle devices. When the emergency vehicle 1 passes through the intersection, the general vehicle is notified that the emergency vehicle 1 passes. In addition, when the waiting time of the red light changes, the information that the vehicle can pass by the green light at a speed of several kilometers per hour to the next traffic light changes, and when the emergency vehicle passes the intersection, the traffic light 400 and traffic control center 50
Access 0.

As shown in steps 250 and 251 of FIG. 5, the traffic light cycle data from the traffic support processor 300 to the next intersection and the distance data to the next intersection are received by the on-vehicle vehicle 200, and the steps of FIG. 255,25
As shown in FIG. 6, as shown in steps 252 of FIG. 5 and steps 257 and 258 of FIG. 6, data matching the traveling direction of the own vehicle is selected, and the speed at which the vehicle can pass the next intersection with a green light is calculated. The driver is notified by a display device or voice. Also in this case, even if a trouble occurs in the traffic control center, information can be notified from the traffic support processor 300 to ordinary vehicles.

In the above description, the traffic signal control for giving priority to the emergency vehicle at the intersection has been described. However, the control of the traffic signal provided on a straight road can be similarly performed. If an emergency vehicle passing through a general road receives information on a traffic signal before entering the intersection with the on-board device, even if a problem occurs in the traffic control center, the emergency vehicle can be checked and the emergency vehicle can be passed even if a trouble occurs. Since it is possible to control the traffic signal with priority, it is possible to know in advance the speed at which the green light of the next intersection passes through the green light, and it is possible to drive the vehicle efficiently. In an emergency vehicle, the entry of a general vehicle can be regulated in advance when passing through an intersection, so that the vehicle can safely pass through an intersection. Further, by setting an offset giving priority to an emergency vehicle from the traffic control center in real time, safety can be improved. or,
Even if there is no traffic control center, a traffic support signal can be controlled by the traffic support processor alone, and a local system can be constructed, supporting priority traveling of emergency vehicles and smooth passage of general vehicles at intersections. be able to.
In addition, by running a general vehicle smoothly, unnecessary acceleration to the next intersection can be suppressed, and emission of exhaust gas during signal waiting and traffic congestion can be suppressed.

[0030]

According to the present invention, even if a trouble occurs in the traffic control center, a general vehicle can know in advance the speed of passing the green light at the next intersection, so that the vehicle can travel efficiently. Becomes possible. In an emergency vehicle, the entry of a general vehicle can be regulated in advance when passing through an intersection, so that the vehicle can safely pass through an intersection.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of an intersection traffic support device according to an embodiment of the present invention.

FIG. 2 is a control block diagram when an emergency vehicle passes an intersection.

FIG. 3 is a flowchart of control of a means for transmitting onboard device information for an emergency vehicle.

FIG. 4 is a control block diagram when a general vehicle passes an intersection.

FIG. 5 is a control flowchart of a means for receiving on-vehicle device information for a general vehicle.

FIG. 6 is a flowchart of control of the vehicle-mounted device.

FIG. 7 is a flowchart of control of a traffic support processor.

FIG. 8 is a flowchart of control of a traffic control center.

[Explanation of symbols]

100: Emergency vehicle onboard machine, 110: Emergency vehicle ID, 12
0: destination information setting means, 130: azimuth determination processing means,
140: mobile communication control means, 200: general vehicle-mounted device, 210: information display unit, 220: provided information processing means,
230 azimuth determination processing means, 240 mobile communication control means, 300 traffic support processor, 310 mobile communication control means, 320 emergency vehicle ID authentication means, 330 received ID processing means, 340 traffic control Center communication means, 35
0: mobile communication radio wave reception determination means, 360: traffic signal control means, 370: traffic signal cycle and offset data editing means, 400: traffic signal, 410: display control unit, 500: traffic control center, 510: traffic support processing Device communication means, 520 emergency vehicle ID authentication means, 530 destination route setting means, 540 interrupt traffic signal selection means.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Takeshi Hiroki 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture F-term within the Hitachi, Ltd. Omika Works (reference) 5H180 AA12 BB04 EE07 EE08 EE11 FF12 FF13 FF27 JJ02 JJ10

Claims (6)

[Claims] An emergency vehicle provided with an emergency vehicle communication device for transmitting emergency vehicle information, and an operation support processor connected to a traffic light for receiving the emergency vehicle information transmitted by the emergency vehicle communication device and mutually transmitting and receiving. Equipped, the operation support processing machine,
A vehicle traffic support device that controls a traffic signal at the intersection to an all-red signal in a time zone when the emergency vehicle passes an intersection based on the received emergency vehicle information by a control signal. 2. An emergency vehicle having an emergency vehicle communication device for transmitting and receiving to and from an operation support processor connected to a traffic light, and communication for transmitting and receiving to and from the emergency vehicle, the traffic control center, or another operation support processor. An operation support processor equipped with the device, and a traffic control center for transmitting and receiving to and from the operation support processor, the traffic control center is configured to transmit the emergency vehicle from the emergency vehicle information of the emergency vehicle received via the communication device. Transmits a control signal capable of traveling preferentially to the destination to the operation support processor of the traffic signal on the route, and the operation support processor that has received the control signal turns the traffic signal completely red in accordance with the control signal. Vehicle traffic support device controlled by traffic lights. 3. An emergency vehicle, a general vehicle,
An operation support processor having a communication device for transmitting and receiving to and from a traffic control center or another operation support processor; an emergency vehicle having an emergency vehicle communication device for transmitting and receiving to and from the operation support processor; A general vehicle equipped with a general vehicle communication device for transmitting and receiving to and from a processing device; and a traffic control center for transmitting and receiving to and from the operation support processing device, wherein the traffic control center receives an emergency received through the communication device. A vehicle traffic support device for transmitting speed information of a general vehicle from emergency vehicle information of the vehicle to a traffic light on a route on which the emergency vehicle travels to the general vehicle via the operation support processor. 4. The system according to claim 1, further comprising: receiving speed information of an ordinary vehicle from the emergency vehicle information of the emergency vehicle to a traffic light on a route on which the emergency vehicle travels via the operation support processor, and displaying the speed information to a driver; Vehicle traffic support device equipped with a notification device that notifies by voice. 5. A time zone in which the emergency signal passes through the control signal is a cycle offset control signal of a traffic signal. When it is determined that the emergency vehicle has passed an intersection, the emergency signal has a cycle offset or a timeout value. 3. The vehicle traffic support device according to claim 1, wherein the control signal is a control signal for returning to a normal state. 6. The vehicle traffic support device according to claim 3, wherein the speed information is a waiting time of a red light and a traveling speed to an intersection for passing a next traffic light at a green light.