JP2002170194A - Traffic signal controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traffic signal controller capable of performing the opti mum signal control sufficiently even if each communication line causes a failure and a wide area signal controller causes a failure. SOLUTION: One wide area signal controller 1 is arranged in each area and is connected to each intersection signal controller 2, 2a. Each intersection signal controller 2, 2a connects adjacent devices. The wide area signal controller 1 determines a control parameter by which a queen length of whole area becomes the minimum based on traffic streams from each intersection signal controller 2, 2a. The intersection signal controller 2 obtains future queen length based on a control parameter from the wide area signal controller 1, arrival amount prediction data from the adjacent intersection signal controller 2a, and the queue length at current time, adopts a signal control plan in which the queue length is the minimum finally, and displays and controls teach signal lamp device 4. Moreover, it calculates arrival amount prediction data based on current queue length and determined future signal control plan and sends it to the adjacent intersection signal controller 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic signal control device which realizes wide-area control of an adjacent intersection in signal control of a road intersection.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram of the entire system of a conventional traffic signal control device, and FIG. 6 is a block diagram showing a typical configuration example of a wide area signal control device and an intersection signal control device in the same system.

[0005] In FIG. 5, reference numeral 101 denotes a wide-area signal control device which performs signal control of an entire area including a plurality of road intersections. Reference numeral 102 denotes an intersection signal control device provided at each intersection.
1 and a signal lamp 10 provided at each intersection
4 is performed.

[0004] Each of the above-mentioned intersection signal control devices 102 is constructed as shown in FIG.
As shown in the figure, the traffic flow measurement unit 211, the data processing unit 21
2. It comprises a data transmission unit 213, a data reception unit 214, and a signal lamp display unit 215. Traffic flow measurement unit 2
Numeral 11 measures the traffic flow by a sensor installed at the intersection and outputs the traffic flow to the data processing device 212. The data processing unit 212 obtains data such as an average traffic flow rate and a saturated traffic flow rate based on the data measured by the traffic flow measuring unit 211, and the data transmitting unit 213 controls the wide area signal control device 101.
Send to

The wide area signal control apparatus 101 comprises an intersection signal control section 201, a queue length calculation section 202, a data reception section 203, and a data transmission section 204. The above-mentioned wide area signal control device 101 includes each intersection signal control device 102
The data transmitted from the data transmission unit 213, that is, the data transmitted from all the intersections,
03, and input to the queue length calculation unit 202. This queue length calculation unit 202 is provided for each intersection signal control device 1
The queue length of the entire area is calculated based on the data transmitted from the data area 02. In this case, the intersection signal control unit 201
Determines control parameters such as cycle, split, and offset in the queue length calculation unit 202. That is, the intersection signal control unit 201 and the queue length calculation unit 20
2 determines the control parameters that operate simultaneously to minimize the queue length of the entire area. The control parameters obtained by the intersection signal control unit 201 and the queue length calculation unit 202 are sent to each intersection signal control device 102 by the data transmission unit 204.

[0006] Each intersection signal control device 102 receives the control parameters sent from the data transmission unit 204 by the data reception unit 214 and inputs the control parameters to the signal lamp display unit 215. The signal light display unit 215 controls the display of each signal light 104 according to the received control parameter.
As described above, the traffic signal of the entire area is controlled.

However, in the above-mentioned conventional traffic signal control device, because of the system configuration in which the control of all the intersections is intensively performed by the wide-area signal control device 101, (1) the wide-area signal control device 101 and each When a failure occurs in the communication line 103 connecting the intersection signal control device 102,
Intersection signal control does not work well.

(2) If the wide area signal control device 101 fails, signal control of the entire area does not function sufficiently.

There is a problem that

Conventionally, traffic signal control devices shown in FIGS. 7 and 8 have been proposed. FIG. 7 is a configuration diagram of the entire system of another typical conventional traffic signal control device, and FIG. 8 is a block diagram showing a detailed configuration of an intersection signal control device in the same system.

In FIG. 7, 301, 302, 303
Is an intersection signal control device provided at each intersection.
2 is a target intersection signal control device, 301 is an upstream adjacent intersection signal control device, and 303 is a downstream adjacent intersection signal control device. Each of the intersection signal control devices 301 and 3
02 and 303 are connected by a communication line 304,
The data is communicated with each other and the signal lights 1 at each intersection
04 is display-controlled.

As shown in FIG. 8, the target intersection signal control device 302 includes a data reception unit 401, an intersection upstream traffic flow measurement unit 402, a measurement data storage unit 403, a current queue calculation unit 404, and a future queue. Calculation section 405, intersection signal control section 406, intersection signal light display section 407,
It comprises a traffic flow arrival prediction data calculation unit 408 to the downstream intersection and a data transmission unit 409. The upstream adjacent intersection signal control device 301 and the downstream adjacent intersection signal control device 303 are configured similarly to the target intersection signal control device 302.

The target intersection signal control device 302 is connected to the upstream adjacent intersection signal control device 301 by the communication line 30.
4 receives the traffic flow arrival prediction data 305 transmitted through the
Enter 05. The traffic flow arrival prediction data 305 is:
It is composed of a histogram that handles the number of vehicles arriving in the future in chronological order.

An intersection upstream traffic flow measuring section 402 measures a traffic flow from a sensor installed in the upstream adjacent intersection signal control device 301, stores the measured traffic flow in a measurement data storage section 403, and a current queue calculation section. Input to 404. The current queue calculation unit 404 calculates the current queue length based on the traffic flow measured by the traffic flow measurement unit 402 at the intersection upstream, and inputs the current queue length to the future queue calculation unit 405. The future queue calculation unit 405 calculates the future queue based on the queue length calculated by the current queue calculation unit 404 and the traffic flow arrival prediction data 305 from the upstream intersection received by the data reception unit 401. Calculate the length transition.

The intersection signal control unit 406 operates simultaneously with the future queue calculation unit 405 to repeatedly execute the processing. The intersection signal control unit 406 creates a future signal control plan, and the future queue calculation unit 405 calculates a future queue length based on the plan. The intersection signal control unit 406 determines a signal control plan that minimizes the queue length in the future, that is, minimizes the delay time at the intersection.
7 and a traffic flow arrival prediction data calculation unit 40 at the downstream intersection
8 is output.

The intersection signal light display section 407 controls the display of each signal light 104 in accordance with the signal control plan determined by the intersection signal control section 406. The traffic flow arrival prediction data calculation unit 408 for the downstream intersection performs a future prediction based on the past traffic flow measurement data stored in the measurement data storage unit 403, and the intersection signal control unit 406
Correct based on the signal control plan draft obtained in. The output data of the traffic flow arrival prediction data calculation unit 408 to the downstream intersection is sent from the data transmission unit 409 to the downstream adjacent intersection signal control device 303 as traffic flow arrival prediction data 306 to the downstream of the intersection. As described above, system control between adjacent intersections becomes possible.

However, when the traffic flow arrival prediction data calculation unit 408 for the downstream intersection predicts the traffic flow arrival amount by the above-described method, the past traffic flow pattern stored in the measurement data storage unit 403 is used. Therefore, when traffic flow fluctuates rapidly, the prediction error increases. As a result, the signal control cannot follow the fluctuation of the traffic flow, so that a large queue may be formed.

[0018]

As described above, the conventional traffic signal control device shown in FIGS. 5 and 6 has a system configuration in which control of all intersections is intensively performed by the wide area signal control device 101. (1) When a failure occurs in the communication line 103 connecting the wide area signal control device 101 and each intersection signal control device 102,
Intersection signal control does not work well.

(2) If the wide area signal control device 101 fails, signal control of the entire area does not function sufficiently.

There was a problem that

In the conventional traffic signal control device shown in FIGS. 7 and 8, when the traffic flow arrival prediction data calculation unit 408 to the downstream intersection predicts the traffic flow arrival amount, the measurement data storage unit 403 Since the future prediction is performed based on the past traffic flow patterns stored in, the prediction error increases when the traffic flow fluctuates rapidly. As a result, there is a problem that a large queue may be formed because the signal control cannot follow the fluctuation of the traffic flow.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a traffic signal control device capable of performing a sufficiently optimal signal control even when each communication line fails or the wide area signal control device fails. The purpose is to do.

[0023]

A traffic signal control device according to a first aspect of the present invention is a traffic signal control device for controlling a signal lamp installed at each road intersection in a control target area. A wide-area signal controller that determines a control parameter whose length is minimum, and a plurality of intersection signal controllers connected to the wide-area signal controller and connected to each other, and each of the intersection signal controllers. Data communication means for obtaining arrival amount prediction data and transmitting / receiving data to / from an adjacent intersection signal control device, wherein each of the intersection signal control devices includes a control parameter and an adjacent intersection signal sent from the wide area signal control device. The signal lamp is controlled based on the arrival amount prediction data sent from the control device.

A traffic signal control device according to a second aspect of the present invention is a traffic signal control device for controlling a signal light installed at each road intersection in a control target area, wherein the control is such that the queue length of the entire control target area is minimized. A wide-area signal controller for determining parameters, a plurality of intersection signal controllers connected to the wide-area signal controller and connected to each other; A queue calculating means for calculating a queue; a current queue calculated by the queue calculating means; control parameters sent from the wide area signal control device; and arrival amount prediction data sent from the adjacent intersection signal control device. A signal control plan creating means for obtaining a future queue length based on the above, and creating a signal control plan having the smallest queue length; and Signal lamp control means for controlling a signal lamp in accordance with the signal control plan created by the drafting means; and arrival amount for obtaining arrival amount prediction data based on the signal control plan created by the signal control plan creation means It is characterized by comprising prediction data calculation means, and data transmission means for transmitting the arrival amount prediction data obtained by the arrival amount prediction data calculation means to the adjacent intersection signal control device.

A traffic signal control device according to a third aspect of the present invention is a traffic signal control device for controlling a signal light installed at each road intersection in a control target area by each intersection signal control device. Data receiving means for receiving traffic flow arrival prediction data sent from
Traffic flow measuring means for measuring the traffic flow at the upstream adjacent intersection; first queue calculating means for obtaining a current queue from the traffic flow at the upstream adjacent intersection measured by the traffic flow measuring means; Means for calculating a future queue transition based on the traffic flow arrival prediction data received by the means and the current queue obtained by the first queue calculating means, and a signal control for minimizing the future queue length. Signal control plan creation means for creating a plan, signal light control means for controlling a signal light in accordance with the signal control plan created by the signal control plan creation means, and traffic flow arrival received by the data reception means Based on the prediction data, the current queue determined by the first queue calculation means, and the signal control plan created by the signal control plan creation means, Traffic flow arrival prediction data calculation means for calculating flow arrival arrival prediction data; and data transmission means for transmitting the traffic flow arrival prediction data obtained by the traffic flow arrival prediction data calculation means to the downstream adjacent intersection signal control device. It is characterized by having done.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a schematic diagram of the entire system configuration of a signal control device according to a first embodiment of the present invention, and FIG. 2 is a detailed configuration of a wide area signal control device and an intersection signal control device in FIG. FIG.

In FIG. 1, reference numeral 1 denotes a wide area signal control device.
One is arranged in a predetermined area, and is connected via a communication line 3 to intersection signal control devices 2 and 2a installed at each intersection. In this case, 2 is the target intersection signal control device, and 2a is the adjacent intersection signal control device. Also,
In each of the intersection signal control devices 2 and 2a, adjacent devices are connected by a communication line 5. Each intersection signal control device,
For example, the target intersection signal control device 2 controls the display of the signal lights 4 at each intersection based on the data from the wide area signal control device 1 and the data from the adjacent intersection signal control device 2a.

The wide area signal control device 1 and the target intersection signal control device 2 are configured as shown in FIG. In addition,
The adjacent intersection signal control device 2a is configured similarly to the target intersection signal control device 2.

The wide area signal control device 1 includes an intersection signal control unit 11, a queue length calculation unit 12, a data reception unit 13,
It comprises a data transmission unit 14. The wide area signal control device 1 receives the data transmitted from the intersection signal control device 2, that is, data such as the average traffic flow rate and the saturated traffic flow rate transmitted from all the intersections by the data receiving unit 13, It is input to the queue length calculator 12. The queue length calculation unit 12 calculates the queue length of the entire area based on the data sent from the intersection signal control device 2. In this case, the intersection signal control unit 11
, Control parameters such as cycle, split, and offset. That is, the intersection signal control unit 11
And the queue length calculator 12 operate simultaneously to determine a control parameter that minimizes the queue length of the entire area.
The control parameters obtained by the intersection signal control unit 11 and the queue length calculation unit 12 are sent to the intersection signal control device 2 by the data transmission unit 14.

The intersection signal control device 2 includes a queue calculation unit 20, a traffic flow measurement unit 21, a data processing unit 22, a data transmission unit 23 for transmitting data to the wide area signal control device 1,
A first data receiving unit 24 for receiving control parameters sent from the wide area signal control device 1; a second data receiving unit 25 for receiving arrival amount prediction data sent from the adjacent intersection signal control device 2a; Queue calculator 26,
Intersection signal control unit 27, arrival amount prediction data calculation unit 28,
It comprises a data transmission section 29 for transmitting data to the adjacent intersection signal control device 2a, and a signal lamp display section 30.

The traffic flow measuring section 21 measures a traffic flow by using a sensor installed at an intersection, and outputs the measured traffic flow to the queue calculating section 20 and the data processing section 22. Queue calculator 20
Calculates the current queue length at the intersection according to the traffic flow measured by the traffic flow measurement unit 21 and outputs the calculated queue length to the future queue calculation unit 26 and the arrival amount prediction data calculation unit 28.

The data processing unit 22 includes the traffic flow measuring unit 2
The data such as the average traffic flow rate and the saturated traffic flow rate are obtained based on the data measured in step 1 and transmitted from the data transmission unit 23 to the wide area signal control device 1.

The first data receiving section 24 receives the control parameters sent from the data transmitting section 14 of the wide area signal control device 1 and inputs the control parameters to the intersection signal control section 27. Further, the second data receiving unit 25 receives the arrival amount prediction data transmitted from the adjacent intersection signal control device 2a and inputs the data to the future queue calculating unit 26.

The future queue calculation unit 26 and intersection signal control unit 27 repeatedly execute the processing at the same time. The intersection signal control unit 27 repeatedly creates a future signal control plan, and the future queue calculation unit 26 calculates a future queue length based on the signal control plan.

The signal control plan with the smallest queue length calculated by the future queue calculation unit 26 is finally adopted by the intersection signal control unit 27, and the arrival amount prediction data calculation unit 28 and the signal lamp display unit It is passed to 30. However,
Each signal control plan created by the intersection signal control unit 27 is:
The value is not significantly different from the control parameter received by the first data receiving unit 24. The signal lamp display section 30
Controls the display of each signal lamp 4 according to the signal control plan sent from the intersection signal control unit 27.

The above-mentioned arrival amount prediction data calculation unit 28
Calculates the arrival amount prediction data based on the current queue length and the determined future signal control plan, and sends the data to the adjacent intersection signal control device 2a by the data transmission unit 29. The arrival amount prediction data calculated by the arrival amount prediction data calculation unit 28 includes a time-series histogram of the number of vehicles predicted to arrive at the intersection upstream.

As described above, the signal control of the entire area is performed by the wide-area signal control device 1 and the signal control of the intersection is performed by each of the intersection signal control devices 2 and 2a. Thus, even if the wide area signal control device 1 is not provided, it is possible to control the system between adjacent intersections by communicating the arrival amount prediction data between adjacent intersections. As a result, even when each communication line fails or the wide area signal control device 1 fails, it is possible to perform sufficiently optimal signal control.

(Second Embodiment) Next, a second embodiment of the present invention will be described. FIG. 3 is a configuration diagram of an entire system of a traffic signal control device according to a second embodiment of the present invention, and FIG. 4 is a block diagram illustrating a detailed configuration of each intersection signal control device in FIG.

In FIG. 3, reference numerals 31, 32, and 33 denote intersection signal controllers, 32 denotes a target intersection signal controller to be controlled, 31 denotes an upstream adjacent intersection signal controller, and 33 denotes a downstream adjacent intersection signal controller. It is. Each of the intersection signal control devices 31, 32, 33 is connected to the communication line 3
4 are connected. Each intersection signal control device 31, 3
2 and 33 each obtain traffic flow arrival prediction data and send it to each downstream adjacent intersection signal control device via the communication line 34. Each intersection signal control device 31, 32, 33
Creates a signal control plan from the traffic flow arrival prediction data sent from the upstream of the intersection and the current queue, etc., and according to the signal control plan, the signal lights 4 at each intersection.
Display control.

The target intersection signal control device 32 has the configuration shown in FIG.
As shown in the figure, to the data receiving unit 41, the traffic flow measuring unit 42 at the intersection upstream, the queue calculating unit 44 at the present time, the future queue calculating unit 45, the intersection signal control unit 46, the intersection signal lamp display unit 47, and the downstream intersection. And a data transmission unit 49. The upstream adjacent intersection signal control device 31 and the downstream adjacent intersection signal control device 33 are configured in the same manner as the target intersection signal control device 32.

The target intersection signal control device 32 receives the traffic flow arrival prediction data 35 sent from the upstream adjacent intersection signal control device 31 at the data receiving portion 41, and receives the future queue calculation portion 45 and the downstream intersection. Is input to the traffic flow arrival prediction data calculation unit 48. The traffic flow arrival prediction data 35 is composed of a histogram in which the number of vehicles arriving in the future is treated in a time series.

On the other hand, the traffic flow measuring section 42 at the upstream of the intersection
The traffic flow is measured from a sensor installed in the upstream adjacent intersection signal control device 31 and input to the queue calculation unit 44 at the present time. The current queue calculation unit 44 calculates the current queue length based on the traffic flow measured by the intersection upstream traffic flow measurement unit 42, and sends it to the future queue calculation unit 45 and the downstream intersection. Traffic flow forecast data calculator 4
Enter 8

The future queue calculation unit 45 calculates the future traffic flow arrival prediction data 35 from the upstream intersection received by the data reception unit 41 and the queue length calculated by the queue calculation unit 44 at the present time. Is calculated and output to the intersection signal control unit 46.

The future queue calculation unit 45 and the intersection signal control unit 46 operate simultaneously and repeatedly execute the processing.
The intersection signal control unit 46 creates a future signal control plan, and the future queue calculation unit 45 calculates a future queue length based on the plan. The intersection signal control unit 46 determines a signal control plan that minimizes the future queue length, that is, minimizes the delay time at the intersection. The intersection signal light display unit 47 and the traffic flow arrival prediction data to the downstream intersection are determined. Output to the calculation unit 48.

The intersection signal light display section 47 controls the display of each signal light 4 in accordance with the signal control plan determined by the intersection signal control section 46. Further, the traffic flow arrival prediction data to downstream intersection calculation unit 48 includes the current queue length calculated by the current queue calculation unit 44, the traffic flow arrival prediction data 35 from the upstream intersection received by the data reception unit 41, The calculation is performed based on the future signal control plan obtained by the intersection signal control unit 46, and the traffic flow arrival prediction data to the downstream intersection is obtained. The output data of the traffic flow arrival prediction data calculation section 48 to the downstream intersection is sent from the data transmission section 49 to the downstream adjacent intersection signal control device 33 as traffic flow arrival prediction data 36 to the downstream of the intersection.

In the second embodiment, the traffic flow measured by the traffic flow measuring section 42 at the upstream of the intersection is input to the queue calculating section 44 at the present time to obtain the current queue, and the traffic flow to the downstream intersection is further determined. In the arrival prediction data calculation unit 48,
In addition to the current queue and the traffic flow arrival prediction data 35 from the upstream adjacent intersection signal control device 31, the traffic flow to the downstream intersection is determined based on the future signal control plan obtained by the intersection signal control unit 46. Since the arrival amount prediction data 36 is created, it is possible to catch a sudden change in the traffic flow detected further upstream of the upstream intersection, and as a result, even if the traffic flow suddenly changes, the queue length is increased. It has become possible to perform signal control capable of suppressing noise.

[0047]

As described above in detail, according to the present invention, the signal control of the entire area is performed by the wide area signal control device, and the arrival amount prediction data is transmitted between adjacent intersection signal control devices. Since the signal control of each intersection is executed based on the arrival amount prediction data, each intersection signal control device communicates the arrival amount prediction data between adjacent intersections even without a wide area signal control device. In addition, system control between adjacent intersections can be reliably performed. As a result, even when each communication line fails or the wide-area signal control device fails, sufficiently optimal signal control can be performed.

Further, according to the present invention, in the traffic flow arrival prediction data calculation unit for the downstream intersection, the current queue based on the traffic flow at the upstream intersection and the traffic flow arrival amount sent from the upstream adjacent intersection signal control device are provided. Combined with forecast data, traffic flow arrival forecast data at downstream intersections is created based on future signal control plans, so rapid changes in traffic flow detected further upstream at upstream intersections are captured. Therefore, signal control that can reliably suppress the queue length even in the case of a rapid change in traffic flow can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of the entire system configuration of a signal control device according to a first embodiment of the present invention.

FIG. 2 is an exemplary block diagram showing a detailed configuration of a wide area signal control device and an intersection signal control device according to the embodiment;

FIG. 3 is a schematic diagram of the entire system configuration of a signal control device according to a second embodiment of the present invention.

FIG. 4 is an exemplary block diagram showing a detailed configuration of a target intersection signal control device according to the embodiment;

FIG. 5 is a configuration diagram of an entire system of a conventional signal control device.

FIG. 6 is a block diagram showing a typical configuration example of a wide area signal control device and an intersection signal control device in FIG. 5;

FIG. 7 is a configuration diagram of the entire system of another typical conventional traffic signal control device.

FIG. 8 is a block diagram showing a detailed configuration of an intersection signal control device in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wide-area signal control device 2 Target intersection signal control device 2a Adjacent intersection signal control device 3, 5 Communication line 4 Signal light 11 Intersection signal control unit 12 Queue length calculation unit 13 Data reception unit 14 Data transmission unit 20 Queue calculation unit 21 Traffic flow measurement unit 22 Data processing unit 23 Data transmission unit 24 First data reception unit 25 Second data reception unit 26 Future queue calculation unit 27 Intersection signal control unit 28 Arrival amount prediction data calculation unit 29 Data transmission unit 30 Traffic light display section 31 Upstream adjacent intersection signal control device 32 Target intersection signal control device 33 Downstream adjacent intersection signal control device 35 Traffic flow arrival prediction data from intersection upstream 36 Traffic flow arrival prediction data to intersection downstream 41 Data Reception unit 42 Intersection upstream traffic flow measurement unit 44 Current queue calculation unit 45 General Traffic flow estimated arrival data calculating unit 49 data sending unit to the queue calculation section 46 intersection signal control unit 47 crossing signal lamp device display unit 48 downstream intersection

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigeatsu Katayama 1-1-1 Wadazakicho, Hyogo-ku, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries, Ltd. 1-1-1, Tazakicho, Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (72) Inventor Minato Nishihara 1-1-1, Wadasakicho, Hyogo-ku, Kobe-shi, Hyogo F-term in Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (reference) 5H180 AA01 BB01 DD01 EE02 JJ02 JJ06 JJ12 JJ13

Claims (3)

[Claims] 1. A traffic signal control device for controlling a signal light installed at each road intersection in a control target area, comprising: a wide area signal control device for determining a control parameter that minimizes a queue length of the entire control target area; While being connected to the wide area signal control device, a plurality of intersection signal control devices connected to each other, each of the intersection signal control devices to determine the arrival amount prediction data, between the adjacent intersection signal control device Data communication means for transmitting and receiving, each of the intersection signal control devices, a signal lamp based on the control parameters sent from the wide area signal control device and the arrival amount prediction data sent from the adjacent intersection signal control device A traffic signal control device characterized by controlling the traffic signal. 2. A traffic signal control device for controlling signal lights installed at each road intersection in a control target area, comprising: a wide-area signal control device for determining a control parameter that minimizes a queue length of the entire control target area; A plurality of intersection signal control devices connected to the wide area signal control device and connected to each other, and at each of the intersection signal control devices, a queue calculation unit that calculates a current queue from a traffic flow, The future queue length is determined based on the current queue determined by the queue calculation means, the control parameters sent from the wide area signal controller, and the arrival amount prediction data sent from the adjacent intersection signal controller. A signal control plan creating means for creating a signal control plan with the smallest queue length; and a signal control plan created by the signal control plan creating means. Signal light control means for controlling the signal light according to the plan; arrival amount prediction data calculating means for obtaining arrival amount prediction data based on the signal control plan created by the signal control plan creation means; A traffic signal control device comprising: data transmission means for transmitting arrival amount prediction data obtained by data calculation means to an adjacent intersection signal control device. 3. A traffic signal control device for controlling a signal light installed at each road intersection in a control target area by each intersection signal control device, comprising: a traffic flow arrival prediction data sent from an upstream adjacent intersection signal control device. Receiving means, a traffic flow measuring means for measuring a traffic flow at an upstream adjacent intersection, and a first queue for obtaining a current queue from the traffic flow at the upstream adjacent intersection measured by said traffic flow measuring means. Queue calculating means, and calculating the transition of the future queue based on the traffic flow arrival prediction data received by the data receiving means and the current queue determined by the first queue calculating means,
Signal control plan creating means for creating a signal control plan with a minimum queue length in the future, and signal light control means for controlling a signal lamp according to the signal control plan created by the signal control plan creating means. To the downstream intersection based on the traffic flow arrival prediction data received by the data receiving means, the current queue determined by the first queue calculating means, and the signal control plan created by the signal control plan creating means. Traffic flow arrival prediction data calculating means for calculating the traffic flow arrival prediction data, and data transmission means for transmitting the traffic flow arrival prediction data obtained by the traffic flow arrival prediction data calculation means to the downstream adjacent intersection signal control device. A traffic signal control device, comprising: