JP2000331278A - Traffic control support system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute optimum traffic control in short time. SOLUTION: The system has a traffic monitoring part 1 monitoring a traffic situation, a traffic situation writing means 2 writing the traffic situation into a traffic situation file 3, a traffic control part 6 executing traffic control in respective roads, which is operation-inputted to a traffic on every occurrence of the traffic, a traffic control writing means 16 writing traffic control on every accident, which the traffic control part executes, into a control data file 10, an accident situation writing means 12 writing an accident occurrence situation containing occurrence time in the respective accidents corresponding to traffic control that the traffic control part executes and the traffic situation at the time, which is read from the traffic situation file, into an accident occurrence situation file 9, an accident retrieval means 5 retrieving the accident whose accident occurrence situation is approximated to or matched with the accident occurrence situation from the accident occurrence situation file in accordance with the detection of the new accident occurrence and control guide output means 11 and 13 reading traffic control corresponding to the accident retrieved by the accident retrieval means from the control data file and displaying/ outputting it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic control support system which assists a traffic controller in setting a traffic control to be executed when an accident occurs on a highway or a general road.

[0002]

2. Description of the Related Art For example, when an accident occurs, the situation of the accident is immediately reported to a road manager by an emergency telephone or the like installed on the shoulder of the road. The traffic controller of the road manager listened to the location of the accident and the situation (scale) by telephone,
Furthermore, referring to the normal traffic conditions (vehicle traffic volume, congestion degree) in the relevant time zone at the relevant position, the degree of traffic congestion due to the occurrence of this accident is predicted.

[0003] The traffic controller informs the driver of the occurrence of the accident by using an electric bulletin board or a radio wave medium, and reports the location of the accident and a prediction of the occurrence of congestion due to the accident. Further, the controller does not issue a traffic control instruction particularly when the expected degree of traffic congestion is acceptable, but issues some traffic control instruction when the expected degree of traffic congestion is not acceptable.

[0004] As a specific example of the traffic control instruction, in the case of an accident on a highway, an entrance on the upstream side of the accident occurrence position is closed or lane regulation is performed. In addition, in the case of an accident on a general road, in order to control the amount of traffic (traffic volume) heading for the accident site, the red (stop) period toward the accident site and the blue ( Change the time (split time) with the (progress) period.

[0005]

However, when an accident occurs and it is predicted that congestion of an unacceptable degree will occur if left untouched, the specific control performed by the controller is a long-standing experience of the controller. Was set based on Therefore, even if the accidents were of the same scale, there was a concern that there would be a large variation in the specific contents of the control performed by each controller. In addition, those who are unfamiliar with traffic control work cannot always carry out optimal traffic control.

[0006] Further, since there was no way to quantitatively grasp whether or not the implemented traffic control was optimal, it was possible to intuitively judge whether or not the traffic congestion was resolved after the traffic control was performed.
He was intuitively judging whether or not the traffic control was appropriate.

[0007] The present invention has been made in view of such circumstances, and by storing the traffic control performed in the past together with the situation of occurrence of the accident, it is possible to approximate the traffic accident at the time of the occurrence of a past accident similar to the time of the occurrence of a new accident. You can refer to traffic control, even if you are new to traffic control,
An object of the present invention is to provide a traffic control support system capable of performing optimal traffic control in a short time.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a traffic control support system according to the present invention has a traffic monitoring section for monitoring traffic conditions on each road of a road network, and a traffic monitoring section obtained by the traffic monitoring section. A traffic condition writing means for writing a traffic condition at each time to a traffic condition file, a traffic control unit for performing traffic control on each road operated and input for the accident every time an accident occurs, and a traffic control unit Traffic control writing means for writing the traffic control performed for each accident to the traffic control data file, and the time of occurrence of each accident corresponding to the traffic control performed by the traffic control unit and the traffic at the corresponding time read from the traffic status file The accident situation writing means that writes the accident occurrence situation including the situation to the accident occurrence situation file, and the accident occurrence situation is approximated from the accident occurrence situation file according to the new accident occurrence detection Includes a fault search means for searching an accident there is a match, the control guide output means for displaying and outputting traffic control from the control data file is read corresponding to accident retrieved by the accident retrieval means.

In the traffic control support system configured as above, the control for each accident performed by the controller is accumulated and stored in the control data file. On the other hand, the time of occurrence of each accident corresponding to each traffic control performed by the controller and the traffic situation at the time of occurrence are written in the accident occurrence situation file. That is, the accident occurrence situation and the executed traffic control for each accident that has occurred so far are accumulated and stored in the traffic control data file and the accident occurrence situation file.

[0010] When a new accident occurs, an accident in which the accident occurrence situation is similar or coincident is searched from the accident occurrence situation file, and the traffic control implemented for the searched accident is displayed and output. Therefore, the traffic controller can conduct (set) traffic control for this accident by referring to the displayed traffic control performed in the past,
There is no change by the traffic controller, and a uniform high-level traffic control can be implemented for each accident occurrence situation.

According to the invention of claim 2, in addition to the traffic control support system of the above-mentioned invention, the traffic control for each accident performed by the traffic control unit is further reduced by the traffic congestion since the traffic control was performed. There is a traffic control evaluation means to evaluate based on the cancellation status. The accident search means searches for a highly evaluated accident when a plurality of accidents having the same accident situation are stored in the accident occurrence situation file.

In the traffic control support system configured as described above, the traffic control for each accident performed by the traffic control unit is evaluated based on the situation of eliminating traffic congestion. Then, for the same accident, the traffic control with the higher evaluation is retrieved and displayed, so that the controller can perform the traffic control for the present accident while referring to the higher traffic control in the past.

According to a third aspect of the present invention, in the traffic control support system of the invention described above, the control guidance output means includes:
When the accident search means searches for an approximated accident, the traffic control of the relevant accident read from the control data file is corrected and output.

In the traffic control support system configured as described above, if the same accident as the one that has occurred this time is not stored in the accident occurrence status file, the traffic control of an approximated accident is automatically performed to the current accident. After being corrected to correspond, it is displayed and output. Therefore, the traffic controller can refer to the traffic control that responds more to the accident that has occurred this time.

According to a fourth aspect of the present invention, in the traffic control support system of the invention described above, the control guidance output means includes:
If the accident occurred on an expressway, the location and occurrence of the accident read from the accident occurrence status file based on the entrance closure specified by the control for the accident similar to the relevant accident read from the control data file The closed entrance and the closed time are corrected based on the traffic situation at the time.

Further, in the invention of claim 5, the control guidance output means in the traffic control support system according to the above-mentioned invention, when the accident occurs on an ordinary road, detects the corresponding accident read from the control data file. Based on the traffic signal control instructed by the traffic control for the similar accident, the traffic signal to be controlled and the split time to be controlled are corrected based on the traffic situation at the time of occurrence and the time of the accident read from the accident situation file.

In the traffic control support system according to the fourth and fifth aspects of the present invention, when an accident occurs on an expressway or a general road, the entrance on the upstream side of the accident occurrence position is closed, The split time of the traffic light installed on the upstream side is controlled.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of the traffic control support system of the embodiment. This traffic control support system is composed of, for example, a large-scale computer system.

The traffic monitoring unit 1 calculates the average speed and occupancy at each point on a highway or a general road based on information obtained from a monitoring camera or a traffic flow measuring device installed at each point on the highway or a general road. Calculate traffic conditions such as city and congestion degree. Further, weather information such as temperature and weather at each of the above-mentioned points affecting the traffic condition is monitored at the same time.

The traffic condition and weather condition at each point of an expressway or a general road monitored by the traffic monitoring unit 1 are read by the traffic condition writing unit 2, for example, every minute, and read in a traffic condition file 3. Written in chronological order to

Further, the traffic monitoring unit 1 has a function of receiving an accident occurrence situation from an emergency telephone, a general public telephone, a police station, etc. installed at each point of an expressway or a general road. The accident occurrence status is information such as the accident occurrence position, the accident occurrence time, the scale of the accident, and whether or not the accident has occurred. The accident occurrence situation received by the traffic monitoring unit 1 is detected as an accident by the accident occurrence detection unit 4 and sent to the accident situation writing unit 12 and the approximate accident search unit 5.

The accident situation writing unit 12 writes the accident occurrence situation received by the traffic monitoring unit 1 into a new area of the accident occurrence situation file 9.

Each time an accident occurs, the traffic control unit 6 performs traffic control on each road for which the traffic controller 7 has input an operation via the operation unit 8 for the accident.

As shown in FIG. 2, the accident occurrence status file 9 stores, in chronological order, the accident occurrence status of each accident in which the traffic control unit 6 has performed traffic control. It should be noted that there is a case where traffic control has not yet been performed for an accident written in the newest area in the chronological order. Specifically, as shown in the figure, for each accident number specifying the accident, the time of occurrence, the location of the occurrence, the weather condition at the time of the occurrence, the accident scale, the type of accident location such as high speed / general, the traffic condition at the time of the occurrence, etc. Is stored.

Further, in the traffic control data file 10, the specific contents of the traffic control performed by the traffic control unit 6 for each accident are stored corresponding to the accident numbers described above. Specifically, for an accident on an expressway, for example, the closed entrance at each entrance located on the upstream side of the location where the accident occurred, the closing time of the entrance, and the like, and in some cases, the lane Including regulations. On the other hand, for an accident on a general road, the time (split time) between a red (stop) period and a blue (progress) period in the direction of the accident occurrence position at each traffic light near the accident occurrence position is indicated.

When a new accident is input from the accident detection unit 4, the approximate accident search unit 5 generates an accident for which traffic control has been performed in a traffic area other than the new area, in which the accident occurrence situation of the relevant accident matches or approximates. A search is made from the status file 9 and transmitted to the optimal control selecting unit 11. Naturally, there is no accident in which the accident occurrence location, accident occurrence time, accident scale, and weather conditions at the time of the accident exactly match.Therefore, an allowable range is set for each of the above-mentioned items, and a new accident If the situation falls within this allowable range, it is determined that they match.

The optimum traffic control selection unit 11 is provided with an approximate accident search unit 5
Is read from the traffic control data file 10 for the traffic control executed for the coincident or similar accidents searched in the above. When there is a traffic control in which the accident coincides, the optimal control selection unit 11 displays and outputs the traffic control via the traffic control display output unit 13. When there are a plurality of coincident accidents, the traffic control with the higher evaluation value P is displayed and output.

When there is no traffic control with the coincident accident and there is a traffic control of the approximate accident, the control correction unit 14 corrects the read traffic control of the approximate accident using the correction table 15. I do. Next, this specific correction method will be described with reference to FIGS.

FIG. 6A is a schematic diagram showing a traffic situation at the time of the present accident on the highway. Then, as a traffic control, it is assumed that the entrance on the upstream side of the accident occurrence position is closed and the closing time T is obtained. In this case, traffic congestion of distance k occurs upstream from the accident location,
Assume that the vehicle has time t to pass through this traffic jam.
In this case, the average speed v during a traffic jam is given by the following equation.

V = k / t The accident occurrence status file 9 does not store an accident in the same traffic condition as the current accident, but stores an approximate accident. It is assumed that only the average speed per hour v differs from the accident, the value is v ₀ , and the entrance closing time stored in the control data file 10 of the relevant accident (approximate accident) is T ₀ .

In this case, the average speed increase Δv from the approximate accident is given by the following equation.

Δv = v−v ₀ and the average speed increase Δv and the increase time from the entrance closing time T ₀ of the approximate accident at the time of closing the entrance (corrected closing time)
ΔT (= T−T ₀ ) is the correction table 15 in FIG.
Is stored as the correction characteristic A. The correction characteristic A is a characteristic obtained experimentally, and can be arbitrarily changed by the controller.

Accordingly, the corrected closing time ΔT is obtained from the average speed increase amount Δv and added to the entrance closing time T ₀ of the approximate accident to obtain the corrected closing time T for the current accident.

T = T ₀ + ΔT Similarly, FIG. 6B is a schematic diagram showing a traffic situation at the time of the present accident on a general road. Then, a case is assumed in which a traffic signal on the upstream side of the accident occurrence position is controlled to determine its split time T. In this case, it is assumed that a traffic jam of a distance k occurs upstream from the accident occurrence position, and that the vehicle has a time t to pass through the traffic jam. In this case, the average speed v during a traffic jam is given by the following equation.

V = k / t The accident occurrence situation file 9 does not store accidents of the same traffic condition but stores approximate accidents. In this approximate accident, only the average speed per hour v is stored. Differently, it is assumed that the value is v ₀ and the split time stored in the control data file 10 of the relevant accident (approximate accident) is T ₀ .

The average speed increase Δv from the approximate accident in this case is given by the following equation.

Δv = v−v ₀ FIG. 3 shows the average speed increase Δv and the increase time (corrected closing time) ΔT (= T−T ₀ ) from the split time T ₀ of the approximate accident during signal control. The correction characteristic B is stored in the correction table 15 shown in FIG. The correction characteristic B is a characteristic obtained experimentally, and can be arbitrarily changed by the controller.

Accordingly, the corrected closing time ΔT is obtained from the average speed increase Δv, and the split time T of the approximate accident is calculated.
_By adding to ₀ , the split time T after correction for the current accident is obtained.

T = T ₀ + ΔT The traffic control correction unit 14 displays and outputs the traffic control corrected in this way via the traffic control display output unit 13.

The traffic controller 7 inputs the traffic control for this accident with reference to the traffic control displayed via the operation unit 8. Specifically, only the changes are input.

The traffic control decision instructing unit 16 instructs the traffic control unit 6 on the traffic control inputted by the traffic controller 7 via the operation unit 8, and writes the traffic control data file 10 together with the accident number specifying the accident.

When the traffic control unit 6 detects that the traffic control for one accident has ended, the control end detection unit 17 activates the control evaluation unit 18. The traffic control evaluation unit 18 evaluates the traffic control performed based on the elimination of the congestion in the traffic conditions near the accident location at each time from the time immediately after the occurrence of the accident to the end of the traffic control stored in the traffic situation file 3 at each time. Is carried out.

Next, a specific evaluation method of the traffic control will be described.

For example, description will be made with reference to FIGS. 6A and 6B. As shown in the figure, at the time of occurrence of the accident, the traffic jam distance is k, and the traffic jam passage time is t. Then, for example, the congestion distance k is calculated every time the unit time ta such as 10 minutes elapses, and deviations (differences) from the congestion distance obtained one unit period ago are represented by Δk ₁ , Δk ₂ , Δk ₃ , Δk ₄ , Ask for ... Similarly, the traffic jam passing time t is calculated every time the unit time ta such as 10 minutes elapses, and the deviation (difference) time Δt ₁ , Δt ₂ , Δt ₃ , from the traffic jam passing time t calculated one unit period ago is calculated.
Δt ₄ ,.

Then, for each of the obtained deviation distances and each deviation time, the weighting factors K ₁ , K ₂ , K ₃ , K ₄ ,... (K ₁ >) are reduced each time the unit time ta elapses. K ₂ >
K _3> K _4> ...) to obtain an evaluation value Tb, Vb per each traffic congestion distance and traffic jam transit time by and continue to further adds multiplying.

Tb = (K ₁ Δk ₁ + K ₂ Δk ₂ + K ₃ Δk ₃ + K ₄ Δk ₄ +...) / (Number of data) Vb = (K ₁ Δt ₁ + K ₂ Δt ₂ + K ₃ Δt ₃ + K ₄ Δt ₄ + ...) / (number of data) The overall evaluation value P is an average of these.

P = (Tb + Vb) / 2 The evaluation value P calculated in this manner is written by the evaluation value writing unit 19 in the area of the relevant traffic control in the control data file 10.

The overall operation of the traffic control support system thus configured will be described with reference to the flowcharts of FIGS.

As shown in the flow chart of FIG. 5, every time a unit time such as one minute elapses (Q1), the traffic condition at each position of the road network is read from the traffic monitoring unit 1 (Q2), and the traffic condition file is read. 3, the time is written in chronological order with the reading time (current time) (Q3).

As shown in FIG. 4, when the occurrence of an accident is detected (S1), the accident situation is written in the accident situation file 9 (S2). Next, accident occurrence status file 9
(S3), and if an accident of the same (same condition) other than the one written this time has already been stored (S4), the traffic control data of the relevant accident is read from the control data file 10 (S5). . When there are a plurality of accidents of the same (same condition) (S6), data of traffic control with a high evaluation value P is read (S7). Then, the read traffic control data is displayed and output (S8).

If no accident of the same (same condition) other than the one written this time is stored (S4), the closest accident is read (S9), and the traffic control data of the relevant accident is read from the traffic control data file 10. Get out (S10). Then, the read traffic control data is corrected so as to correspond to the accident that has occurred this time (S11). The corrected traffic control data is displayed and output (S8).

If there is a correction instruction in the traffic control data displayed by the controller 7 (S12), the displayed traffic control data is corrected (S13), and the displayed traffic control data is sent to the traffic control unit 6. It is sent (S14). Further, the traffic control data sent to the traffic control unit 6 is written in the traffic control data file 10.

When the traffic control for one accident is completed (S16), a quantitative evaluation of the executed traffic control is performed (S17). Then, the calculated evaluation value P is written into the control data file 10.

In the traffic control support system configured as described above, the traffic control for each accident performed by the controller 7 is stored in the control data file 10 in chronological order together with the accident which is the basis of the traffic control. . On the other hand, the time of occurrence and the traffic situation at the time of occurrence of each accident of each Koetsu control performed by the controller 7 are written in the accident occurrence situation file 9. When a new accident occurs, the accident occurrence situation file 9 is searched for an accident whose approximate or coincident accident situation is found, and the traffic control implemented for the detected accident is displayed and output.

Therefore, the traffic controller 7 can carry out (set) traffic control for the present accident with reference to the displayed traffic control performed in the past. Therefore, there is no change by the controller 7, and a uniform high-level traffic control can be performed for each accident occurrence situation.

The traffic control performed by the traffic control unit for each accident is evaluated based on the actual elimination of traffic congestion after the time when the accident occurred. Then, for the same accident, the traffic control with the higher evaluation value P is retrieved and displayed, so the controller 7 performs the traffic control for the current accident while referring to the higher traffic control in the past. it can.
As a result, the traffic control accuracy performed by the controller 7 can be further improved.

Further, if the same accident as the accident which has occurred this time is not stored in the accident occurrence situation file 9, the traffic control of the approximate accident is automatically corrected so as to correspond to this accident, and then displayed. Is output. Therefore, controller 7
Can refer to traffic control that responded more to the accident that occurred this time.

[0058]

As described above, in the traffic control support system of the present invention, the traffic control performed in the past is stored and stored together with the accident occurrence situation.

Therefore, it is possible to set the traffic control for the current accident by referring to the traffic control at the time of the past accident which is the same or similar when a new accident has occurred. Even in such a case, optimal traffic control can be performed in a short time.

If the same accident as the newly-occurred accident is not stored, the traffic control of the approximate accident is automatically corrected so as to correspond to the current accident, and then displayed and output. Therefore, the traffic controller can refer to the traffic control that responds more to the accident that has occurred this time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a traffic control support system according to an embodiment of the present invention.

FIG. 2 is a diagram showing the stored contents of an accident occurrence situation file incorporated in the traffic control support system.

FIG. 3 is a diagram showing storage contents of a correction table incorporated in the traffic control support system.

FIG. 4 is a flowchart showing the overall operation of the traffic control support system.

FIG. 5 is a flowchart showing a traffic monitoring processing operation of the traffic control support system.

FIG. 6 is a diagram for explaining a traffic control correction method in the traffic control support system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Traffic control part 2 ... Traffic information writing part 3 ... Traffic information file 4 ... Accident occurrence detection part 5 ... Approximate accident detection part 6 ... Traffic control part 7 ... Traffic controller 8 ... Operation part 9 ... Accident occurrence situation file 10 ... Control data file 11 ... Optimal control selection unit 12 ... Accident situation writing unit 13 ... Control display output unit 14 ... Control correction unit 15 ... Correction table 16 ... Control decision instructing unit 17 ... Control end detection unit 18 ... Control evaluation unit 19 … Evaluation writing unit

Claims (5)

[Claims] 1. A traffic monitoring unit for monitoring traffic conditions on each road of a road network, traffic condition writing means for writing traffic conditions at each time obtained by the traffic monitoring unit into a traffic condition file, A traffic control unit for performing traffic control on each road operated and input for the corresponding accident for each accident, and a traffic control writing means for writing the traffic control for each accident performed by the traffic control unit into a control data file. An accident situation writing means for writing, in an accident occurrence situation file, an accident occurrence situation including an occurrence time in each accident corresponding to the traffic control performed by the traffic control unit and a traffic situation at the corresponding time read from the traffic situation file; And an accident search means for searching for an accident in which the accident occurrence status is similar or coincident with the accident occurrence status file in accordance with the new accident occurrence detection. A traffic control support system comprising: traffic guidance corresponding to the searched accident; and traffic control guidance output means for reading out and displaying the traffic control from the traffic control data file. 2. A traffic control evaluation means for evaluating a traffic control for each accident performed by the traffic control unit based on a state of elimination of traffic congestion after the traffic control is performed, and the accident search means. 2. The traffic control support system according to claim 1, wherein, when a plurality of accidents having the same accident situation are stored in the accident occurrence situation file, the highly evaluated accident is searched. 3. The traffic control guidance output means, when the accident search means searches for an approximated accident, corrects the traffic control of the relevant accident read from the traffic control data file and outputs the corrected display. Item 1. The traffic control support system according to Item 1. 4. The control guidance output means, when the accident is an accident occurring on a highway, based on an entrance closed by an air traffic control command for an accident similar to the relevant accident read from the control data file. 4. The traffic control support system according to claim 3, wherein the closed entrance and the closed time are corrected based on the traffic situation at the occurrence location and time of the accident read from the accident occurrence situation file. 5. The traffic control guidance output means, when the traffic accident occurs on a general road, based on a traffic light control instructed by a traffic control for an accident similar to the relevant accident read from the traffic control data file. 4. The traffic control support system according to claim 3, wherein the traffic signal to be controlled and the split time are corrected based on the traffic situation at the time and location of the occurrence of the accident read from the accident occurrence situation file.