JP2001202594A - Method and device for preferentially controlling specified vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for preferentially controlling a specified vehicle, which prevent the occurrence of a traffic jam and cause the specified vehicle such as a line bus having high publicity to travel prior to the other vehicles. SOLUTION: In a specified vehicle preferential control system, time when a signal 1 on a side where a line bus 9 advances shows green or red is controlled based on a signal obtained from a vehicle sensor 4 when the line bus 9 passes near the vehicle sensor 4 and the line bus 9 is preferentially traveled. Plural signal parameters controlling the travel of the line bus 9 are prepared and a time band range T controlling the signal 1 is set. When it comes to the time band range T, the signal is controlled based on the signal parameter and information from the vehicle sensor 4 is analyzed at a specified time internal t. The signal parameter is switched by matching it to a road situation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of driving a specific vehicle such as a route bus having high publicity in a road traffic in preference to other vehicles while taking into account a change (situation) in traffic volume. The present invention relates to a specific vehicle priority control method and an apparatus therefor for enabling a vehicle to be controlled.

[0002]

2. Description of the Related Art Conventionally, in road traffic, there is a method in which a specific vehicle such as a route bus having high publicity (hereinafter, simply referred to as a "route bus") is caused to travel with priority over other vehicles. A method has been tried. For example, a bus priority lane is provided in a specific time zone, and during that time, ordinary vehicles are excluded, and only route buses can run in the priority lane so that route buses can run smoothly. is there. Another method is to add a vehicle I to the route bus.
D information is kept, and when the route bus passes near the vehicle sensor, it senses it and sends a signal to the signal controller,
The signal controller controls the signal so that the blue display time of the traffic light becomes longer in accordance with the predicted arrival timing at the signalized intersection in the traveling direction of the route bus, thereby realizing the smooth running of the route bus.

[0003]

However, the conventional control method has a structure in which the road condition at that time and the signal control function are completely separated. The control method is
Signal parameters are determined from the traffic volume measured at each intersection with reference to past data. For this reason, when the traffic volume increases, such as a temporary increase in the traffic volume due to an event such as an exhibition, there is a problem that the entire traffic flow is not appropriate and the occurrence of traffic congestion is unavoidable. Was.

The present invention has been made to solve such a problem, and its object is to prevent the occurrence of traffic congestion,
Another object of the present invention is to provide a specific-vehicle priority control method and a specific-vehicle priority control method that allow a specific vehicle such as a route bus having high publicity to run preferentially to other vehicles.

[0005]

A specific vehicle priority control method according to the present invention is characterized in that, when a specific vehicle passes near a vehicle sensor, a signal from the vehicle sensor causes the specific vehicle to travel on the side where the specific vehicle is traveling. The specific vehicle priority control device that controls the time during which the traffic light shows blue or red and gives priority to traveling of the specific vehicle is provided with a plurality of signal parameters for controlling the traveling of the specific vehicle. A time zone for controlling the traffic light is set, and when the time zone is reached, a signal is controlled based on the signal parameter,
The signal parameters are switched according to information from the vehicle detector. To prepare a plurality of the signal parameters means, for example, signal parameters for performing control suitable for a situation when the road is vacant, control suitable for a situation where the distance between specific vehicles traveling on a congested road is longer than a certain distance. Or signal parameters that are suitable for various situations, such as signal parameters that control the situation when the frequency of passage of specific vehicles traveling on congested roads becomes less than a certain value and the frequency increases. Refers to preparing multiple items. According to this method, as a basic operation, the parameters of the signal are switched in a predetermined time zone, the traffic signal is controlled with priority given to the running of the specific vehicle, and the running of the specific vehicle can be performed smoothly. it can. In addition, not only does the signal parameter switch in the determined time zone, but also a plurality of signal parameters are prepared, and when the traffic condition of the road becomes a certain state, the signal parameter is switched according to the road condition. Therefore, more effective control can be performed.

According to a second aspect of the present invention, in the specific vehicle priority control method according to the first aspect, the switching control of the signal parameters is determined based on a past running history. . According to this method, the switching of the signal parameters is performed with reference to the results of the past running history, so that more effective control can be performed.

According to a third aspect of the present invention, in the specific vehicle priority control method according to the first or second aspect, the switching of the parameter of the signal is expected when a general vehicle other than the specific vehicle passes. It is checked at regular time intervals whether or not an adverse effect is produced more than the adverse effect, and if a negative effect is produced, the signal is switched to a predetermined signal parameter. According to this method, when a vehicle other than the specific vehicle is adversely affected, another parameter is selected to minimize the adverse effect on the traveling of the vehicle other than the specific vehicle. Can be done.

According to a fourth aspect of the present invention, in the specific vehicle priority control method according to any one of the first to third aspects, when the traffic light is switched from blue to yellow or red, the vehicle is controlled. The blue lighting time is extended to the maximum extent so that all vehicles detected by the sensor can pass through the intersection where the traffic light is installed. According to this method, the number of specific vehicles that can pass through the intersection can be increased, so that the flow of the specific vehicles can be made smoother.

According to a fifth aspect of the present invention, in the specific vehicle priority control method according to any one of the first to third aspects, it is assumed that the specific vehicle is stopped immediately near the traffic signal. , The red lighting time of the traffic light at which the specific vehicle is stopped is reduced to a minimum range. According to this method, the time of the specific vehicle stopped at the intersection can be reduced, and the number of specific vehicles can be increased.

According to the invention described in claim 6 of the present invention, when a specific vehicle passes near the vehicle sensor, a signal from the vehicle sensor causes a blue signal or a traffic light on the side on which the specific vehicle goes. A specific-vehicle priority control device that controls a time during which red is displayed and causes the specific vehicle to travel with priority has a plurality of signal parameters for controlling the travel of the specific vehicle and controls the traffic light. Control means, implementation time zone setting means incorporating information on an implementation time zone for determining a time zone for controlling the traveling of the specific vehicle with priority, and a parameter for switching a signal parameter from information from the vehicle sensor. And a switching unit. According to this configuration, the parameters of the signal are switched in the determined time zone, the traffic signal is controlled with priority given to the running of the specific vehicle, and the running of the specific vehicle can be performed smoothly.

According to a seventh aspect of the present invention, in the specific vehicle priority control apparatus according to the seventh aspect, the parameter switching means analyzes the information from the vehicle detector to determine the traffic on the entire road. The situation is grasped, and switching of the signal parameters is executed in accordance with the analyzed traffic situation. According to this configuration, the signal parameters can be switched according to the road condition, so that more effective control can be performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific vehicle priority control system according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a specific vehicle priority control system according to the present embodiment. The “specific vehicle” in the present embodiment is a vehicle having a high publicity,
Here, a route bus is taken as an example. In FIG. 1, in this specific vehicle priority control system, a traffic light 1, a signal control unit 2, and a signal control lower unit 3 installed adjacent to an intersection on a road, and an optical device installed before (upstream) the intersection. Type vehicle detector (beacon) 4 and information providing lower-order device 5
And a signal control system central device (main CPU) 6 having a host computer, a traffic information system central device 7, an on-vehicle device 8 mounted on a specific vehicle, and the like. The signal control system central device 6 and the traffic information system central device 7 are installed in a traffic monitoring center or the like, and the others are arranged on a route.
Further, route bus ID information is incorporated in the vehicle-mounted device 8, and the route bus 9 on which the vehicle-mounted device 8 is mounted (see FIG. 2).
When the vehicle passes near the optical vehicle sensor 4 (hereinafter simply referred to as “vehicle sensor 4”), the vehicle sensor 4 can wirelessly receive the route bus ID information from the vehicle-mounted device 8. ing.

More specifically, the traffic light 1 has three signal lights 1a, 1b, and 1c of blue (B), yellow (Y), and red (R) which are arranged side by side or vertically. I have. The switching of the lighting of each of the signal lamps 1a to 1c is performed under the control of the signal control subordinate device 3 via the signal control unit 2. The vehicle detector 4 is installed in front (upstream) of the traffic light 1, and at least one or more is disposed between the traffic lights 1. In FIG. 4, two traffic lights 1 are installed.

FIG. 2 is a conceptual diagram of a point-sensitive control system for detecting and controlling a route bus (specific vehicle) approaching an intersection where the traffic light 1 is installed. In this point-sensitive control system, the vehicle-mounted device 8 is installed at the intersection where the traffic light 1 is installed.
When a route bus 9 (not shown in FIG. 2; see FIG. 1) is approached, the route bus ID information of the vehicle-mounted device 8 is wirelessly read by the vehicle sensor 4 and the route bus ID at this time is read. The information is sent as uplink information to the information provision lower-order device 5 and the signal control lower-order device 3 together with information on general vehicles (vehicles other than specific vehicles) that do not have route bus ID information, and is sent as a detection signal to the signal control unit 2. The signal control unit 2 controls the switching of the lighting of the signal lights 1a to 1c of the traffic light 1. When the information providing lower-level device 5 receives the ID information (upling information) from the vehicle sensor 4, the information providing lower-level device 5 discriminates the route bus ID information from the general vehicle information and sends it to the signal control lower-level device 3 as uplink information. The signal control lower-order device 3 that has received the information instructs a signal control parameter to the signal control unit 2 based on the information and performs vehicle priority control described later.

FIG. 3 is a flowchart showing an outline of a control processing procedure in the specific vehicle priority control system in the present embodiment shown in FIG. The operation of the specific vehicle priority control system will now be described with reference to the flowchart of FIG. First, in this specific vehicle priority control system, a day is divided by a width of about one hour, and in that time zone, the mode is switched to the specific vehicle priority control mode, and processing is performed according to the following steps S101 to S106.

In step S101, a time zone width for implementing the present system, for example, a time zone width T from what time to what time is determined.
The processing from 102 to S106 is started. Further, the vehicle sensor 4 always collects vehicle passage information including route bus ID information, and the vehicle information collected by the vehicle sensor 4 is used as an uplink signal as an information providing device 5 and a signal control lower device. 3 as well as to the signal controller 2 as a detection signal.

Then, in a time zone in which priority is given to the specific vehicle, specific vehicle priority control is performed. In this specific vehicle priority control, a micro control method for simply performing a control with priority given to the route bus 9 based on a past running history at the starting point of the bus route, and a bus priority policy control most characteristic of the present invention. Are controlled by any one of the macro control methods. Which of the control methods is to be used is determined in step S102.
Is selected and executed based on the past running history.

First, an operation when a general micro control is selected in step S102 will be described. In this micro control system, the route bus I from the vehicle detector 4 is used.
When the D information is input to each of the information provision lower-order device 5, the signal control lower-order device 3, and the signal control unit 2, it recognizes the passage of the route bus 9. Then, in the information providing lower-order device 5 and the signal control lower-order device 3, the central processing type route bus is set in accordance with the route bus arrival prediction at the downstream signal intersection, which is the direction in which the route bus 9 travels. Sensitive control is performed for each terminal signal controller 1. In this case, the control is performed by using the route bus 9 as a unit (1-1, 1) as shown in FIG.
-2, 1-3), and the route bus 9 disposed between the front and rear (upstream and downstream) vehicle sensors 4 is controlled as one system control group.

The route bus arrival prediction timing obtained by the signal control lower-order device 3 is based on the distance between the vehicle sensor 4 and the signalized intersection, and the route bus traveling reference speed (constant).
The signal control subordinate device 3 transmits the obtained route bus arrival prediction evening information to the signal control unit 2. The signal control unit 2 inputs this information as a route bus sensing signal and a route bus travel time required, and executes a route bus sensitive operation in a micro control system in which only the travel of the route bus 9 is given priority. Here, if the setting of the signal control unit 2 is in the “extended showing” mode in which the route bus arrival prediction evening is set to be as long as possible,
The route bus 9 has the vehicle detector 4 within the maximum extension time limit.
The green time is extended by the time required to pass through the intersection from, so that the route bus 9 is prevented from stopping at the intersection. On the other hand, if the route bus is predicted to be as short as possible in the mode of “reducing present”, when the approach of the route bus 9 is detected, the blue bus which gives the right to the route bus 9 is given. For the purpose of shifting to the display as soon as possible, control is performed to reduce the red display time and to reduce the stop time of the route bus 9 as much as possible. The control method such as whether to take "extended announcement" or "shortened announcement" is set in advance based on the past traveling history, and these are previously set in the signal control system central device 6 and the traffic control system. It is set by the information system central unit 7. In this control, the process returns to step S102 in a cycle of time t until the time zone width T elapses, and is repeatedly performed.

Next, the operation when the macro control is selected in step S102 will be described. If the route bus priority control method is employed, for example, if the traffic volume temporarily increases due to an event at an exhibition, the overall traffic flow becomes inappropriate, and traffic congestion including general vehicles occurs. In the case where the influence of the temporary traffic congestion is expected as described above, it is the route bus priority policy control that can suppress this influence. That is, in the route bus priority policy control, when it is determined that the traveling frequency of the route bus 9 with respect to the target bus route in each past time zone becomes high and the sensitivity control does not work effectively, the route bus preset in advance is set. Then, a cycle, a split, and an offset for giving a large priority to the traveling direction of No. 9 are activated, and the route bus priority policy control is performed (step S104). However, if the traffic value is high in the overall traffic conditions of the bus route,
The route bus priority policy control is stopped, and normal control with an emphasis on general traffic is performed (step S105).

The determination as to whether or not to activate the route bus priority policy control is made using the following parameters (control). When the route bus operation interval in the corresponding time zone is determined from the route bus ID information history and the average cycle length collected for each day of the week and for a certain time interval (a certain time interval t), and it is determined that the route bus priority policy control is valid. Route bus priority policy control is activated. At this time, no system response is performed. An example of the criterion will be described below with reference to FIG. In FIG. 5, an area indicated by a symbol B indicates an area in which the traffic light 1 indicates blue, an area indicated by a symbol Y indicates an area indicating yellow, and an area indicated by a symbol R indicates red. Are shown.

In FIG. 5, the criteria for analyzing and judging whether or not the route bus priority policy control method is effective include, for example, a route bus ID collected from the vehicle sensor 4 at the uppermost stream of the target bus route. From the previous week of the information history, the number of times the sensitive control can be performed is counted based on the following criteria, and the ratio of the route bus 9 that can pass at the time of the route bus priority control is set to M% (STEP 1). Also, the applicable time zone width (judgment period)
The average cycle length of T is C, the time interval from the previous route bus ID information history is D, and if the following (1) is satisfied, it is determined that the sensitive control can be performed. It is determined that control cannot be performed.

D> αC (1.5 ≦ α ≦ 2.0) (1)

On the other hand, the number of the route buses 9 entering the route bus traveling direction split is counted by superimposing the split distribution at the time of implementing the following policy control in this time zone, and the number of the route bus 9 is equal to or more than αC. (1.5 ≦ α ≦ 2.0) The ratio of the number of vacant units is N% (STEP 2). And
If (M> N), route bus priority policy control is activated, otherwise, sensitive control (the existing bus priority control) is performed (STEP 3).

Next, while the route bus priority policy control is being activated, it is confirmed whether or not a serious influence on general traffic occurs on the corresponding bus route and the road intersecting with the bus route. If it is determined that priority should be given to avoiding congestion in general traffic, the control returns to normal control in the relevant time zone, and the route bus priority policy control will not be activated during the relevant time zone thereafter. . The determination as to whether or not the avoidance of the congestion state in the general traffic should be given priority is made by analyzing, for example, as follows.

In this control, the maximum traffic information amount among the upbound vehicle sensors 4 on the bus route is PIa, and the maximum traffic information amount among the downbound vehicle sensors 4 on the bus route is PIb. Assuming that A and B are the traffic information amount determination values, respectively, if PIa> A or PIb> B, the route bus priority policy control is stopped, and otherwise the control is continued. FIG.
This shows the general traffic status confirmation procedure.

These determinations are made at regular intervals. That is, the control is performed at regular time intervals t within the range of the policy control execution time width T, and each time the control method is reviewed in accordance with the road condition.

As described above, according to the specific vehicle priority control system in the embodiment of the present invention, the following effects can be expected. -When a predetermined time zone is reached, the signal parameters (control method) are switched, and the traffic signal is controlled with priority given to the traveling of the route bus (specific vehicle) 9 so that the traveling of the route bus 9 is performed smoothly. be able to. In addition, the signal parameters are not simply switched in a predetermined time zone, but a plurality of signal parameters are prepared, and depending on the situation at the place, for example, the road situation such as the number of specific vehicles passing in a unit time. Since it can be switched according to
More effective control can be performed. Switching of signal parameters is performed with reference to the past running history, so that more effective control can be performed. Switching of signal parameters is confirmed at regular time intervals t as to whether or not a bad influence that is more than the expected influence is exerted on the traffic of general vehicles other than the route bus, and the bad influence is given. In such a case, the signal parameters are switched to the predetermined signal parameters, so that adverse effects on the running of vehicles other than the route bus can be minimized. When the traffic light 1 is switched from blue to yellow or red lighting, the blue lighting time is in the maximum range so that all of the route buses 9 detected by the vehicle detector 4 can pass through the intersection where the traffic light 1 is installed. , The number of the route buses 9 that can pass through the intersection can be increased, and the flow of the route buses 9 can be made smoother. -When it is assumed that the route bus 9 stops immediately near the traffic light 1, the red light time at the traffic light 1 where the route bus 9 is stopped is reduced to the minimum range, so that the intersection is used. , The time of the route bus 9 to be stopped can be reduced, and the flow of the route bus 9 can be made smoother.

In the above-described embodiment, the route bus 9 has been described as an example of the specific vehicle having high publicity.
When another vehicle is set as a specific vehicle without being limited to the route bus, the same control can be performed for the specific vehicle.

[0030]

According to the present invention, as apparent from the above-described embodiment, the signal parameters (control method) are switched in a predetermined time zone, and the traffic signal control giving priority to the running of a specific vehicle is performed. As a result, the running of the specific vehicle can be performed smoothly. In addition, the signal parameters are not simply switched in a predetermined time zone, but a plurality of signal parameters are prepared, and depending on the situation at the place, for example, the road situation such as the number of specific vehicles passing in a unit time. Since switching can be performed at the same time, more effective control can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a specific vehicle priority control system according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram of a point-sensitive control system according to the present embodiment.

FIG. 3 is a flowchart showing an example of a control processing procedure according to the embodiment.

FIG. 4 is a schematic diagram of system response according to the present embodiment.

FIG. 5 is an explanatory diagram of a control method determination criterion in the present embodiment.

FIG. 6 is an explanatory diagram of a control method determination criterion in the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traffic light 1a-1c Signal lamp 2 Signal control part 3 Signal control sub-device 4 Optical vehicle sensor 5 Information provision sub-device 6 Signal control system central device 7 Traffic information system central device 8 On-board device 9 Route bus T Time width t control Review interval

Claims (7)

[Claims] 1. When a specific vehicle passes near a vehicle sensor, the signal of the specific vehicle indicates blue or red based on a signal obtained from the vehicle sensor. A specific vehicle priority control device that controls time and travels with priority given to the specific vehicle, prepares a plurality of signal parameters for controlling traveling of the specific vehicle, and sets a time zone for controlling the traffic signal Then, when the time zone is reached, while controlling the signal based on the signal parameter, the information from the vehicle detector is analyzed at specific time intervals to grasp the traffic condition of the entire road, and the analyzed A specific vehicle priority control method, wherein a signal parameter is switched according to a traffic condition. 2. The specific vehicle priority control method according to claim 1, wherein the switching control of the signal parameter is determined based on a past running history. 3. The method according to claim 1, wherein the switching of the parameter of the signal is performed when the traffic of a general vehicle other than the specific vehicle has an adverse effect that is worse than expected. Specific vehicle priority control method described in the above. 4. When the traffic light is switched from blue to yellow or red lighting, the blue lighting time is maximized so that all vehicles detected by the vehicle sensor can pass through the intersection where the traffic light is installed. 4. The specific vehicle priority control method according to claim 1, wherein the specific vehicle priority control method is extended in a range. 5. When the specific vehicle is assumed to have stopped immediately near the traffic light, the red lighting time at the traffic light where the specific vehicle is stopped is reduced to a minimum range. 4. The method according to claim 1, wherein
The specific vehicle priority control method according to any one of the above. 6. When a specific vehicle passes near the vehicle sensor, a time when the specific vehicle indicates a blue or red traffic light on the traveling side based on a signal obtained from the vehicle sensor. A specific vehicle priority control device that controls the traffic light by controlling a plurality of signal parameters for controlling the travel of the specific vehicle; and the specific vehicle. Implementation time zone setting means for incorporating information on an implementation time zone for determining a time zone to control with priority on progress of the vehicle, and parameter switching means for switching a signal parameter from information from the vehicle sensor. Specific vehicle priority control device characterized by the above-mentioned. 7. The parameter switching means analyzes information from the vehicle detector to grasp the traffic condition of the whole road, and executes signal parameter switching in accordance with the analyzed traffic condition. 7. The specific vehicle priority control device according to claim 6, wherein