JP2008305090A - Traffic signal controller and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress traffic disruption when a disaster occurs by executing traffic-actuated control for enhancing the safety of a vehicle when the disaster occurs. <P>SOLUTION: In the traffic signal controller 4 having a traffic-actuated control function for setting a signal control parameter so that a traffic signal 1 in each of a plurality of intersections Ci cooperates with each other, an evacuation route 12 in a control area in the case of disaster is stored, and guide control is performed to set the signal control parameter in each intersection Ci included in the evacuation route 12 so that the vehicle 5 travels easily along the evacuation route 12, when the disaster occurs actually within the control area. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to traffic-sensitive control for switching traffic lights at a plurality of intersections, and more specifically, traffic-signal control for performing traffic-sensitive control capable of route guidance at the time of a disaster and suppression of inflow to a traffic regulation section. The present invention relates to an apparatus and a method.

The signal control method for traffic signals by system control and wide area control is roughly divided from the viewpoint of setting method of signal control parameters (split, cycle length, offset, etc.). There are two types of traffic sensitive control in which signal control parameters are set according to traffic conditions.
Among these, the latter traffic sensitive control is classified into terminal sensitive control performed for each traffic signal controller of the terminal and central sensitive control that changes signal control parameters for a plurality of intersections that are route system controlled or surface controlled. The

  The above-mentioned central sensitive control can be applied to a road with a large traffic volume and a large traffic volume because it can perform advanced system control and wide area control (surface control) corresponding to the traffic flow fluctuation. In such central sensitive control, program selection control that selects one program that is most suitable for the current traffic state based on vehicle sensor information, and online signal control parameters and signal display switching timing based on vehicle sensor information. By performing the program formation control to determine, it aims at the improvement of traffic processing efficiency (refer nonpatent literature 1).

"Revised Traffic Signal Guide" Editorial and publication Traffic Engineering Research Group (16-18, 83-87)

Conventionally, in the traffic control center that performs the above-mentioned central sensitivity control, when a disaster such as a major accident or an earthquake occurs in the control area, the traffic regulation information that accompanies it is displayed on the electric billboard display board on the infrastructure side, or from a radio broadcasting station. We are making efforts to alleviate traffic congestion associated with disasters by broadcasting such traffic regulation information.
However, simply by notifying the vehicle passengers of traffic regulation information associated with the disaster in this way, the evacuation route to the evacuation point becomes a heavy traffic jam, causing the passenger to panic, There is a risk that the vehicle may enter the section that has become difficult to pass, leading to confusion.

  The present invention has been made in view of such circumstances, and traffic signal control capable of suppressing traffic disruption at the time of a disaster by enabling traffic sensitive control to enhance the safety of a vehicle at the time of a disaster. An object is to provide an apparatus and method.

The first traffic signal control device of the present invention is a traffic signal control device that performs traffic sensitivity control for setting signal control parameters so that traffic signals at a plurality of intersections are interlocked,
Storage means for storing the evacuation route in the control area at the time of the disaster, and the evacuation route included in the evacuation route so that the vehicle can easily travel on the evacuation route when a disaster actually occurs in the control area. And control means for performing guidance control for setting signal control parameters for intersections (Claim 1).

According to the first traffic signal control apparatus of the present invention, the intersection included in the evacuation route so that the control means can easily travel on the evacuation route when a disaster actually occurs in the control area. Since the guidance control for setting the signal control parameter is performed, the evacuation route is congested and the passenger is prevented from panicking, and the safety of the vehicle in the event of a disaster can be improved.
For this reason, compared with the case where traffic regulation information associated with a disaster is simply notified to the passengers of the vehicle, traffic disruption at the time of disaster can be suppressed.

The first traffic signal control device of the present invention preferably further comprises providing means for providing the vehicle with information indicating the evacuation route (Claim 2).
In this case, since the providing means provides the vehicle with information indicating the evacuation route, the vehicle occupant can know the location of the evacuation route in advance. For this reason, compared with the case where the passenger of a vehicle does not know the location of an evacuation route, possibility that it will drive | work the evacuation route becomes higher and the said guidance control can be performed more reliably.

Moreover, in the first traffic signal control apparatus of the present invention, it is preferable that the providing means further provides the vehicle with information related to switching timing of signal lamps at intersections included in the evacuation route. 3).
In this case, since the passenger of the vehicle traveling on the evacuation route can detect in advance the signal switching timing when traveling on the evacuation route, the evacuation route can be traveled more safely and reliably.

The second traffic signal control device of the present invention is a traffic signal control device that performs traffic sensitivity control for setting signal control parameters so that traffic signals at a plurality of intersections are linked,
Storage means for storing the traffic restriction section in the control area at the time of disaster occurrence and the inflow suppression intersection for this section, and when the disaster actually occurs in the control area, it travels upstream of the inflow suppression intersection Control means for performing inflow suppression control for setting a signal control parameter of the inflow suppression intersection so that the vehicle is difficult or impossible to enter the restricted traffic section (claim). 4).

According to the second traffic signal control device of the present invention, it is difficult for the vehicle running on the upstream side of the inflow suppression intersection to enter the traffic regulation section when the disaster actually occurs in the control area. Inflow suppression control is performed to set the signal control parameter of the inflow suppression intersection so that it becomes impossible, so that the vehicle is prevented from entering the restricted traffic section and the safety of the vehicle in the event of a disaster is improved. Can do.
For this reason, compared with the case where traffic regulation information associated with a disaster is simply notified to the passengers of the vehicle, traffic disruption at the time of disaster can be suppressed.

In the second traffic signal billing device of the present invention, it is preferable that the vehicle further comprises providing means for providing the vehicle with information indicating that the inflow suppression control is being performed (Claim 5).
In this case, since the information that the control is being performed is provided to the vehicle, the vehicle occupant can detect in advance that the inflow suppression control is being performed. For this reason, compared with the case where a passenger does not know such information, possibility that a vehicle will detour around a traffic regulation section can further be improved.

The third traffic signal control device of the present invention is a traffic signal control device that performs traffic sensitivity control for setting signal control parameters so that traffic signals at a plurality of intersections are linked,
Communication means for performing two-way communication with each traffic signal, and determination means for determining whether or not a fault has occurred in the traffic signal based on the state of a received signal from each traffic signal at the time of a disaster, (Claim 6)

According to the third traffic signal control device of the present invention, the determination means determines whether or not a failure has occurred in the traffic signal based on the state of the received signal from each traffic signal at the time of the disaster. By providing the position information of the traffic signal determined to be faulty by the determination means to the vehicle (Claim 7), the vehicle occupant knows in advance where the traffic signal has failed after the disaster occurred. Can be sensed.
For this reason, compared with the case where traffic regulation information associated with a disaster is simply notified to the passengers of the vehicle, traffic disruption at the time of disaster can be suppressed.

In the third traffic signal control device of the present invention, when the storage device further stores the evacuation route at the time of occurrence of the disaster, the providing unit is the traffic determined to have a fault on the evacuation route It is preferable to provide the vehicle with position information of the traffic light (claim 8).
In this case, as the vehicle occupant travels along the evacuation route, it is possible to detect in advance where the traffic signal is broken, so that the vehicle occupant can be confused when traveling on the evacuation route. Can be prevented.

The first traffic signal control method (Claim 9) of the present invention relates to the control method performed in the first traffic signal control device (Claim 1), and has the same operational effects as the control device. The second traffic signal control method (Claim 10) of the present invention relates to the control method performed in the second traffic signal control device (Claim 4), and has the same operational effects as the control device.
The third traffic signal control method of the present invention (Claim 11) relates to the control method performed in the third traffic signal control device (Claim 6), and has the same effect as the control device. Have.

  As described above, according to the present invention, it is possible to perform traffic sensitive control that enhances the safety of a vehicle when a disaster occurs, so that it is possible to suppress traffic disruption when a disaster occurs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[Overall system configuration]
FIG. 1 shows the overall configuration of a traffic signal control system employing the present invention.
As shown in FIG. 1, the traffic signal control system of the present embodiment includes a traffic signal 1, a vehicle-mounted device 2 (see FIG. 2), a vehicle detector 3, a central device 4, a vehicle 5 equipped with the vehicle-mounted device 2, and the like. .

Each traffic signal 1 is installed at each of a plurality of intersections Ci (i = 1 to 12), and is connected to a router 7 via a communication line 6 such as a telephone line. The router 7 is connected to a central device 4 in the traffic control center, and the central device 4 constitutes a local area network (LAN) with each traffic signal 1 at the intersection Ci in the control area.
Therefore, the central device 4 can bidirectionally communicate with each traffic signal 1, and each traffic signal 1 can also communicate bidirectionally with other traffic signals 1. The central device 4 may be installed on the road instead of the traffic control center.

The vehicle detector 3 is installed upstream of each corresponding intersection Ci in order to count the number of vehicles flowing into each intersection Ci, and is connected to each corresponding traffic signal 1 via a communication line (not shown). Yes.
In FIG. 1, for simplification of illustration, only one signal lamp 1b is depicted at each intersection Ci, but each actual intersection Ci intersects each other as shown in FIG. 2, for example. Four signal lamps 1b are installed for going up and down the road.

Also, as shown in FIG. 1, in this embodiment, the road structure of the control area under the control of the central device 4 is the main road RM in the north-south direction with a relatively large traffic volume and the east-west direction with a relatively small traffic volume. It is composed of a secondary road RS.
Further, as shown in FIG. 2, the main road RM includes a northbound up line RM1 and a southbound downline RM2, and the secondary road RS includes an eastbound upline RS1 and a westbound downline RS2. It shall be equipped with.

[Central equipment]
FIG. 3 is a block diagram showing the configuration of the central device 4.
As illustrated in FIG. 3, the central device 4 includes a control unit 401, a display unit 402, a communication unit 403, a storage unit 404, and an operation unit 405.
The control unit 401 of the central device 4 includes a workstation (WS), a personal computer (PC), and the like, and collects, processes (calculates), records, and controls signals of various traffic information from the traffic signal 1 and the vehicle detector 3. And provide information in an integrated manner. The control unit 401 of the central device 4 is connected to the hardware units via an internal bus, and also controls the operations of these units.

  The control unit 401 of the central device 4 adjusts the traffic signal 1 on the same road to the traffic signal 1 of the intersection Ci belonging to its own network, or wide area control that extends this system control to the road network. (Surface control) is performed, and traffic sensitive control is performed in which signal control parameters (split, cycle length, offset, etc.) are set according to traffic conditions.

The communication unit 403 of the central device 4 is a communication interface connected to the LAN side via the communication line 6, and transmits a signal control command S1 related to the timing of switching the color of the signal lamp 1b every predetermined time, traffic congestion information, and the like. The traffic information S2 included and the control type information S6 related to the type of traffic control performed by itself are transmitted to each traffic signal device 1.
The control type identified by the control type information S6 includes guidance control and inflow suppression control, which will be described later, in addition to various types of sensitive control that the central apparatus 4 performs during normal operation.

The signal control command S1 and the signal type information S6 are transmitted every signal control parameter calculation cycle (for example, 1.0 to 2.5 minutes), and the traffic information S2 is transmitted every five minutes, for example.
Further, the communication unit 403 of the central device 4 receives the vehicle ID, position information S3 and speed information S4 of the vehicle 5 on which the in-vehicle device 2 is mounted, and the detection of the vehicle sensor 3 from the communication unit 103 of each traffic signal device 1. The signal S5 is received in real time (for example, a period of 0.1 to 1.0 seconds).

The storage unit 404 of the central device 4 is composed of a hard disk, a semiconductor memory, and the like, and a control program for performing traffic sensitivity control including failure determination of the traffic signal device 1 described later, guidance control and inflow suppression control, and the traffic sensitivity An arithmetic program for signal control parameters used for control is stored.
Further, the storage unit 404 of the central device 4 includes the signal control command S1, the traffic information S2, and the control type information S6 generated by the control unit 401, the vehicle ID, the position information S3, the speed information S5, and the sensing acquired from the LAN side. The signal S5 is temporarily stored.

The display unit 402 of the central device 4 includes a road map of an area managed by the central device 4 and a display screen on which positions of all traffic signals 1 and light beacons (not shown) on the road map are displayed. It notifies the central operator of traffic conditions such as traffic jams and accidents, and large-scale accidents and earthquakes that occurred in the control area.
The operation unit 405 of the central device 4 includes an input interface such as a keyboard and a mouse. The operation unit 405 allows the central operator to perform a display switching operation on the display unit 402.

The storage unit 404 of the central device 4 includes a traffic regulation section 10 that prohibits or suppresses travel of the vehicle 5 when a disaster occurs in the control area, and an inflow suppression intersection 11 that is located upstream of the traffic regulation section 10; The evacuation route 12 corresponding to the evacuation place 13 at the time of the disaster is stored in advance.
The above-mentioned traffic regulation section 10 is normally used to prevent traffic of vehicles 5 because it is adjacent to a closed section near the site where the structure collapsed or fire occurred, or when a relatively large disaster such as an explosion or earthquake occurred. It consists of sections that should be suppressed from the time. Further, the traffic regulation section 10 may be a section in which traffic of general vehicles should be regulated in order to prioritize traveling of emergency vehicles and transport vehicles for relief supplies.

This traffic regulation section 10 is determined by the relevant departments of the government and local governments according to the scale of the disaster, and is stored in the storage unit 404 of the central device 4 based on instructions from there.
The evacuation site 13 is made up of, for example, a park or a plaza designated by each local government in advance. Furthermore, the evacuation route 12 is composed of a trunk road or the like necessary for a large number of vehicles 5 to access the park, the plaza, etc., for example, a related department of the government or local government designates in advance based on a predetermined crisis management strategy. It is a thing.

In the example shown in FIG. 1, the roads RM, RS that flow into the intersection C <b> 9 damaged at the time of the disaster are set as the traffic regulation section 10, and the intersections C <b> 5, C <b> 6 in front of the traffic regulation section 10 are the inflow suppression intersection 11. It has become.
In the example shown in FIG. 1, the route from the intersection C4 → the intersection C3 → the intersection C2 → the intersection C1 → the evacuation place 13 is set as the evacuation route 12.

  And the control part 401 of the central apparatus 4 performs the failure determination of the traffic signal 1, guidance control in the evacuation route 12, and inflow suppression control to the traffic regulation area 10 as consistency of the said traffic sensitive control. The contents of these determinations and controls will be described later.

FIG. 2 is a schematic diagram showing the overall configuration of each traffic signal 1 included in the control area.
As shown in FIG. 2, the traffic signal 1 of this embodiment includes four signal lamps 1b installed on the upper and lower lines RM1 and RM2 of the main road and the upper and lower lines RS1 and RS2 of the secondary road, and the signal lamp 1b. And a traffic signal controller 1 a connected via a communication line 8.

The traffic signal controller 1a receives the signal control command S1 from the central device 4, and based on the signal control command S1, turns on / off each signal light such as blue, yellow, red and right turn arrow of each signal lamp 1b. Control blinking.
The traffic signal controller 1a transmits the traffic information S2 received from the central device 4 and the intersection ID stored therein to the in-vehicle device 2 at a predetermined cycle (for example, every 0.1 second). Further, the traffic signal controller 1a receives the position information S3 and the speed information S4 of the vehicle 5 from the in-vehicle device 2, and receives the detection signal S5 from the vehicle detector 5.

FIG. 4 is a block diagram showing the configuration of the traffic signal controller 1a.
As shown in FIG. 4, the traffic signal controller 1 a includes a control unit 101, a lamp driving unit 102, a wired communication unit 103, a wireless communication unit 105, and a storage unit 104.
The control unit 101 of the traffic signal controller 1a is composed of one or a plurality of microcomputers. The control unit 101 is connected to the lamp driving unit 102, the communication unit 103, and the storage unit 104 via an internal bus, and the control unit 101 controls operations of these hardware units.

The control unit 101 of the traffic signal controller 1a controls each signal lamp 1b in accordance with a signal control command S1 that is an output as a result of the central device 4 performing traffic sensitivity control (including guidance control and inflow suppression control described later). The signal lamp color of each signal lamp 1b is switched at a predetermined timing based on the command S1.
The lamp driving unit 102 includes a semiconductor relay (not shown), and corresponds to each of the blue, yellow, and red lamps of the plurality of signal lamps 1b based on the output command S1 input from the control unit 101. The AC voltage (AC 100V) or DC voltage supplied to the signal lights of each color is turned on / off.

The wired communication unit 103 of the traffic signal controller 1a is a communication interface that performs wired communication between the central device 4 and the vehicle detector 3, and the signal control command S1, traffic information S2, and The control type information S6 is received from the central device 4 and the vehicle detection signal S5 is received from the vehicle detector 3.
The wireless communication unit 105 of the traffic signal controller 1a is a communication interface that performs wireless communication with the in-vehicle device 2 of the vehicle 5 flowing into the intersection Ci, and the traffic information S2 is obtained regardless of whether or not a disaster has occurred. The vehicle ID is transmitted to the in-vehicle device 2, and the vehicle ID, position information S 3 and speed information S 4 of the vehicle 5 are received from the in-vehicle device 2.

The wireless communication unit 105 is a medium / wide area communication device such as a wireless LAN or WiMAX (World Interoperability for Microwave Access), and can wirelessly communicate various information with the in-vehicle device 2 mounted on the vehicle 5. .
As shown in FIG. 2, the wireless communication unit 105 can communicate with the in-vehicle devices 2 of the vehicles 5 on all the roads RM1, RM2, RS1, RS2 flowing into the intersection C.

And the radio | wireless communication part 105 of this embodiment transmits link ID of the link (in the example of FIG. 2 main road RM1) with intersection ID with respect to the vehicle-mounted apparatus 2. FIG. The in-vehicle device 2 selects information necessary for itself by collating the link ID attached to the information received from the wireless communication unit 105 with the link ID of the running link. Further, the extension of the communication area of the wireless communication unit 105 (the traveling direction length of the uplink RM1) is set to about 50 to 200 m.
The storage unit 104 of the traffic signal controller 1a includes a hard disk, a semiconductor memory, and the like. The signal control command S1, the traffic information S2, the sensing signal S5, the control type information S6 received by the wired communication unit 103, and wireless communication The unit 105 stores the vehicle ID, position information S3, speed information S4, and the like of the vehicle 5 received.

[In-vehicle device]
The in-vehicle device 2 mounted on the vehicle 5 has a communication function for wirelessly communicating various information with the traffic signal controller 1a and a navigation function for guiding to a destination set by the passenger. FIG. 5 is a block diagram showing the configuration of the in-vehicle device 2.
As illustrated in FIG. 5, the in-vehicle device 2 includes a GPS processing unit 201, an orientation sensor 202, a vehicle speed acquisition unit 203, a communication unit 204, a storage unit 205, an operation unit 206, a display unit 207, an audio output unit 208, and a processing unit 209. Etc.

The GPS processing unit 201 receives a GPS signal from a GPS satellite, and measures the position (latitude, longitude, and altitude) of the vehicle 5 based on time information, GPS satellite orbit, positioning correction information, and the like included in the GPS signal. To do.
The direction sensor 202 is constituted by an optical fiber gyro or the like, and measures the direction and angular velocity of the vehicle 5. The vehicle speed acquisition unit 203 acquires the speed data of the vehicle 5 measured by a vehicle speed sensor (not shown) detecting the angular speed of the wheels.

When the communication unit 204 of the in-vehicle device 2 enters the communication area of the wireless communication unit 105 of the traffic signal controller 1a while the vehicle 5 is traveling toward an intersection Ci, the traffic information S2 transmitted by the wireless communication unit 105 is transmitted. And the vehicle ID, the position information S3, and the speed information S4 are transmitted to the wireless communication unit 105 in real time (for example, in a cycle of 0.1 to 1.0 seconds).
The storage unit 205 of the in-vehicle device 2 is composed of a hard disk, a semiconductor memory, and the like, and stores the traffic information S2 received by the communication unit 204. The storage unit 205 stores road map data.

This road map data includes the intersection data that associates the intersection ID with the position of the intersection, the link ID, the link start point, the end point, and the interpolation point (corresponding to the point where the road bends), and the link start point. It consists of link data that links the link ID of the link to be connected, the link ID of the link connected to the end point of the link, and the link cost.
For example, there are as many link costs as the number of combinations of a link and its end point, and after entering the start point of the link, exit the end point of the link and enter the start point of the next link to be connected. The time required until is set. That is, the link cost includes the cost (time) required to travel from the start point to the end point of the link and the cost (time) required to travel from the end point of the link to the start point of the next link, that is, the intersection. The cost required to pass is included.

The operation unit 206 of the in-vehicle device 2 includes a touch panel, buttons, and the like, and a passenger of the vehicle 5 including a driver can set a destination.
The display unit 207 of the in-vehicle device 2 includes a monitor device (not shown) attached to the dashboard portion of the vehicle 5 and displays the image data created by the processing unit 209 to the passenger. The audio output unit 208 outputs the audio data created by the processing unit 209 from a speaker (not shown).

The processing unit 209 of the in-vehicle device 2 includes one or a plurality of microcomputers and the like, and includes a GPS processing unit 201, a direction sensor 202, a vehicle speed acquisition unit 203, a communication unit 204, a storage unit 205, an operation unit 206, and a display unit. Each process of the audio output unit 208 is controlled.
Further, the processing unit 209 includes each data of the position of the vehicle 5 measured by the GPS processing unit 201, the azimuth and angular velocity of the vehicle 5 measured by the direction sensor 202, the speed of the vehicle 5 acquired by the vehicle speed acquisition unit 203, and the storage unit 205. Based on the road map data stored in the map, the map matching process is performed to determine the position of the vehicle 5 on the road map data link.

[Failure judgment, guidance control and inflow suppression control by central equipment]
Next, referring to FIGS. 1, 6, and 7, the traffic signal 1 failure determination performed by the control unit 401 of the central device 4, guidance control on the evacuation route 12, and inflow to the traffic regulation section 10 are performed. The suppression control will be described.

[Failure judgment]
As described above, the central device 4 configures a LAN with each traffic signal 1 at the intersection Ci in the control area, and the communication unit 403 of the central device 4 performs bidirectional communication with the wired communication unit 103 of the traffic signal controller 1a. Is possible.
Therefore, when the occurrence of a disaster in the control area is notified from a related department, the central operator performs an operation for determining a failure with respect to the operation unit 405, and the control unit 401 of the central device 4 starts with this operation. The failure determination of each traffic signal 1 is performed (ST1 in FIG. 1).

  This failure determination can be performed based on the state of the received signal from the wired communication unit 103 of the traffic signal controller 1a. For example, when a disaster occurs, a test pattern is distributed from the communication unit 403 of the central device 4 to the wired communication units 103 of all the traffic signal controllers 1a, and the traffic signal 1 is transmitted based on the response pattern returned from each wired communication unit 103. It is possible to determine whether or not a failure has occurred. In this case, if the response pattern is less than a predetermined output or waveform, or if the response pattern itself is not returned, communication with the traffic signal controller 1a cannot be performed normally. It can be determined that a failure has occurred.

  Also, various sensors for detecting a failure of the signal lamp 1b (for example, an ammeter for detecting cable disconnection, a voltmeter for measuring voltage drop, etc.) are provided in the traffic signal controller 1a at each intersection Ci, By transmitting the detection signal of this sensor to the central device 4, the control unit 401 of the central device 4 can recognize the failure of the signal lamp 1b. Fault detection by such a sensor is useful when the traffic signal controller 1a has a normal communication function, but a fault such as a collapse occurs in the signal lamp 1b.

When a failure occurs in any traffic signal 1 in the control area, the control unit 401 of the central device 4 uses the location information S9 indicating where the traffic signal 1 where the failure has occurred is the intersection Ci. It transmits to the traffic signal controller 1a of each intersection Ci from the communication part 405, This controller 1a transmits the positional information S9 to the vehicle-mounted apparatus 2 of the vehicle 5 via the wireless communication part 105 (refer FIG. 1).
In addition, the control unit 401 of the central device 4 also displays the position information S9 even when the traffic signal 1 in which a failure has occurred is at the intersection Ci passing through the evacuation route 12 (intersections C2 to C4 in FIG. 1). It transmits to the traffic signal controller 1a of each intersection Ci from the communication part 405.

As described above, according to the central device 4 of the present embodiment, it is determined whether or not a failure has occurred in the traffic signal 1 based on the state of the received signal from each traffic signal 1 at the time of the disaster occurrence. Since the position information S9 of the traffic signal 1 determined to be present is provided to the vehicle 5, the passenger of the vehicle 5 can detect in advance the failure of the traffic signal 1 after the disaster occurs.
For this reason, compared with the case where traffic regulation information accompanying a disaster is simply notified to the passenger of the vehicle 5, traffic disruption at the time of disaster can be suppressed.

  In particular, in the central device 4 of the present embodiment, even when the traffic signal 1 in which the failure has occurred is at the intersection Ci passing through the evacuation route 12, the position information S9 of the traffic signal 1 is provided to the vehicle 5, When the passenger of the vehicle 5 travels on the evacuation route 12, it can be known in advance where the traffic signal 1 is broken. For this reason, it is possible to prevent the passenger of the vehicle 5 from being confused when traveling on the evacuation route 12.

[Guidance control on evacuation route]
Further, starting from the operation by the central operator at the time of the disaster, the control unit 401 of the central device 4 makes the intersection Ci (in FIG. 1) included in the evacuation route 12 so that the vehicle 5 can easily travel on the evacuation route 12. , Guidance control for setting signal control parameters at intersections C2 to C4) is performed (ST2 in FIG. 1).
Specifically, the control unit 401 of the central device 4 sets the recommended speed of the vehicle 5 set in advance, the distance between the traffic signals 1, the traffic signal 1 for the traffic signal 1 at the intersection Ci included in the evacuation route 12. From the cycle length, the offset of each traffic signal 1 is calculated so that the vehicle 5 that has transmitted each traffic signal 1 in blue can pass through the traffic signal 1 ahead in blue.

Then, the control unit 401 of the central device 4 distributes the signal control command S1 for executing the offset calculated as described above to the traffic signal controller 1a of each intersection Ci included in the recommended route 12.
For example, in the example shown in FIG. 1, the evacuation route 12 leading to the evacuation site 13 is a route that passes through the intersection C4 → the intersection C4 → the intersection C2. In this case, the control unit 401 of the central device 4 calculates an offset so that the vehicle 5 that has transmitted the intersection C4 in blue travels at the recommended speed so that the intersections C3 and C2 can also pass in blue.

Thus, according to the central device 4 of the present embodiment, the intersection Ci included in the evacuation route 12 so that the vehicle 5 can easily travel on the evacuation route 12 when a disaster actually occurs in the control area. Since the guidance control for setting the signal control parameter is performed, it is possible to prevent the evacuation route 12 from being congested and causing the passenger to panic, and to improve the safety of the vehicle 3 when a disaster occurs.
For this reason, compared with the case where traffic regulation information accompanying a disaster is simply notified to the passenger of the vehicle 5, traffic disruption at the time of disaster can be suppressed.

[Control of inflow into restricted traffic section]
Furthermore, starting from the operation by the central operator at the time of disaster occurrence, the control unit 401 of the central device 4 allows the vehicle 5 traveling upstream of the inflow suppression intersection 11 corresponding to the traffic regulation section 10 to enter the traffic regulation section 10. Inflow suppression control for setting the signal control parameter of the inflow suppression intersection 11 is performed so that the control becomes difficult or impossible (ST3 in FIG. 1).

Specifically, the control unit 401 of the central device 4 shortens or sets the displayed length for the traffic flow about to enter the restricted traffic section 10 to zero.
That is, taking the inflow suppression intersection 11 (intersection C10) shown in FIG. 6 as an example, the straight blue time of the up line RM1 of the main road is significantly shortened or set to zero, and the right turn arrow of the down line RS2 of the sub road The time is greatly shortened or set to zero, and the signal control command S1 for executing the signal display set in this way is distributed to the traffic signal controller 1a of the inflow suppression intersection 11.

Thus, according to the central device 4 of this embodiment, when a disaster actually occurs in the control area, it is difficult for the vehicle 5 traveling upstream of the inflow suppression intersection 11 to enter the traffic restriction section 10 or Since the inflow suppression control is performed so that the signal control parameter of the inflow suppression intersection 11 is set so as to be impossible, the vehicle 5 is prevented from entering the traffic regulation section 10 without permission, and the safety of the vehicle 5 when a disaster occurs Can increase the sex.
For this reason, compared with the case where traffic regulation information accompanying a disaster is simply notified to the passenger of the vehicle 5, traffic disruption at the time of disaster can be suppressed.

[Providing information to vehicles]
When the control unit 401 of the central device 4 performs the guidance control or the inflow suppression control, the control type generates control type information S6 whose control type is the guidance control or the inflow suppression control, and the route indicating the evacuation place 13 or the evacuation route 12 Information S7 and signal information S8 regarding signal switching timing in the evacuation route 12 are generated.
As shown in FIG. 6, the control type information S6 whose control type is inflow suppression control is transmitted to the traffic signal controller 1a at the inflow suppression intersection 11, and the wireless communication unit 105 of the controller 1a has the control type of inflow suppression. Control type information S6 that is control is transmitted to the in-vehicle device 2 of the vehicle 5.

The in-vehicle device 2 that has received the control type information S6 whose control type is the inflow suppression control notifies the passenger of the information S6 through the display unit 207 and the audio output unit 208. For this reason, the passenger of the vehicle 5 traveling toward the inflow suppression intersection 11 can detect in advance that the inflow suppression control is being performed due to a disaster.
The route information S7 indicating the evacuation route 12 is also transmitted to the traffic signal controller 1a at the inflow suppression intersection 11 and transmitted from the wireless communication unit 105 to the in-vehicle device 2. Therefore, the passenger of the vehicle 5 traveling toward the inflow suppression intersection 11 can also detect the route to the evacuation route 12.

As shown in FIG. 7, the control type information S6 whose control type is guidance control is transmitted to the traffic signal controller 1a at the intersection Ci (intersections C2, C3 and C4 in FIG. 1) included in the evacuation route 12, The wireless communication unit 105 of the controller 1a transmits control type information S6 whose control type is guidance control to the in-vehicle device 2 of the vehicle 5.
The route information S7 and the signal information S8 are also transmitted to the traffic signal controller 1a at the intersection Ci included in the evacuation route 12, and the wireless communication unit 105 of the controller 1a transmits the route information S7 and the signal information S8 to the vehicle. 5 to the in-vehicle device 2.

  The in-vehicle device 2 that has received the route information S7 and the signal information S8 notifies the passenger of the information S7 and S8 through the display unit 207 and the audio output unit 208. For this reason, the passenger of the vehicle 5 traveling on the evacuation route 12 can know in advance the route to the evacuation site 13 and the signal switching timing when traveling on the evacuation route 12.

  As a method of providing control type information S6, route information S7, signal information S8, and position information S9 of the traffic signal 1 determined to be a fault for the in-vehicle device 2 of the vehicle 5, information from the traffic signal controller 1a is used. In addition to transmission, a method in which a wireless communication device provided in the central device 4 directly transmits to each vehicle 5 or another communication infrastructure such as an optical beacon transmits to each vehicle 5 may be adopted. it can.

The embodiments disclosed thus far are all illustrative and not restrictive. The scope of the present invention is indicated by the scope of claims for patent, and all modifications within the scope equivalent to the structure of the claims for patent are included in the present invention.
For example, the present invention is not limited to the case where the central device 4 performs wide area control, and a plurality of traffic signals 1 included in the LAN perform system control or wide area control in a group unit separate from the control by the central device 4. It can also be applied to cases.
In this case, guidance control on the evacuation route 12 and inflow suppression control to the traffic regulation section 10 are performed not on the control unit 401 of the central device 4 but on the control unit 101 of one traffic signal controller 1a in the same control group. It can also be made.

It is a schematic diagram which shows the outline | summary of a traffic signal control system. It is a schematic diagram which shows the outline | summary of a traffic signal. It is a block diagram which shows the structure of a central apparatus. It is a block diagram which shows the structure of a traffic signal controller. It is a block diagram which shows the structure of a vehicle-mounted apparatus. It is a schematic diagram which shows the external use of the traffic signal in an inflow suppression intersection. It is a schematic diagram which shows the outline | summary of the traffic signal in the intersection which passes an evacuation route.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traffic signal device 1a Traffic signal controller 1b Signal lamp 101 Control part 102 Lamp drive part 103 Wired communication part 104 Storage part 105 Wireless communication part 2 In-vehicle apparatus 201 GPS processing part 202 Direction sensor 203 Vehicle speed acquisition part 204 Communication part (Transmission means) )
205 storage unit 206 operation unit 207 display unit 208 audio output unit 209 processing unit 3 vehicle detector 4 central device (traffic signal control device)
401 Control unit (control means, determination means)
402 Display unit 403 Communication unit (providing means)
404 Storage unit (storage means)
405 Operation section 5 Vehicle 10 Traffic regulation section 11 Inflow suppression intersection 12 Evacuation route 13 Evacuation place Ci intersection S1 Signal control command S2 Traffic information S3 Location information (vehicle)
S4 Speed information S5 Sensing signal
S6 Control type information S7 Route information S8 Signal information S9 Location information (traffic signal)

Claims (11)

A traffic signal control device that performs traffic sensitivity control to set signal control parameters so that traffic signals at a plurality of intersections are linked,
Storage means for storing an evacuation route in the control area at the time of a disaster;
Control means for performing guidance control for setting a signal control parameter of the intersection included in the evacuation route so that the vehicle can easily travel on the evacuation route when a disaster actually occurs in the control area; A traffic signal control device comprising:   The traffic signal control device according to claim 1, further comprising providing means for providing the vehicle with information indicating the evacuation route.   The traffic signal control device according to claim 2, wherein the providing unit further provides the vehicle with information related to a switching timing of a signal lamp at an intersection included in the evacuation route. A traffic signal control device that performs traffic sensitivity control to set signal control parameters so that traffic signals at a plurality of intersections are linked,
Storage means for storing the traffic regulation section in the control area at the time of disaster occurrence and the inflow suppression intersection for this section;
The signal control parameter of the inflow suppression intersection is set so that a vehicle traveling upstream of the inflow suppression intersection is difficult or impossible to enter the traffic restriction section when a disaster actually occurs in the control area. A traffic signal control apparatus comprising: control means for performing inflow suppression control to be set.   The traffic signal control device according to claim 4, further comprising providing means for providing the vehicle with information indicating that the inflow suppression control is being performed. A traffic signal control device that performs traffic sensitivity control to set signal control parameters so that traffic signals at a plurality of intersections are linked,
A communication means for performing bidirectional communication with each traffic signal device;
A traffic signal control apparatus comprising: a determination unit that determines whether a failure has occurred in the traffic signal based on a state of a received signal from each traffic signal at the time of a disaster.   The traffic signal control device according to claim 6, further comprising providing means for providing the vehicle with position information of the traffic signal determined to be faulty. It further comprises storage means for storing the evacuation route at the time of the disaster,
The traffic signal control apparatus according to claim 7, wherein the providing unit provides the vehicle with position information of a traffic signal determined to be faulty on the evacuation route. A traffic signal control method for performing traffic sensitive control in which signal control parameters are set so that traffic signals at a plurality of intersections are linked,
The intersection included in the evacuation route is stored so that the evacuation route in the control area at the time of the disaster is stored and the vehicle can easily travel on the evacuation route when a disaster actually occurs in the control area. A traffic signal control method characterized by performing guidance control for setting a signal control parameter. A traffic signal control method for performing traffic sensitive control in which signal control parameters are set so that traffic signals at a plurality of intersections are linked,
A vehicle that stores the disaster section in the control area at the time of the disaster and the inflow suppression intersection for the disaster section, and travels upstream of the inflow suppression intersection when a disaster actually occurs in the control area The traffic signal control method is characterized in that inflow suppression control is performed to set a signal control parameter of the inflow suppression intersection so that it is difficult to enter the disaster section. A traffic signal control method for performing traffic sensitive control in which signal control parameters are set so that traffic signals at a plurality of intersections are linked,
A traffic signal that performs two-way communication with each traffic signal and determines whether or not a fault has occurred in the traffic signal based on a state of a received signal from each traffic signal at the time of occurrence of a disaster Control method.

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