JPH10124794A - Temporary signal system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary signal system in which the whole flow of traffic can be well balanced, and stable one side passage control can be attained even when there is a difference between passage volume in bi-directional traffic lines in a temporary signal system for controlling the lighting of the signal lamp of each signal device provided at the entrance part of a traffic control block, and operating one side passage control of the traffic. SOLUTION: Each signal device 1a and 1b is provided with a stop time detecting sensor 13 which detects the stop time of a vehicle 2 which is the closest to a traffic control block among the vehicles 2 which stop according to the signal devices 1a and 1b, and a controlling means which adjusts the lighting of signal lamps 11 and 12 of each signal device 1a and 1b by using the stop time of the vehicle 2 detected by the stop time detecting sensor 13 in a prescribed time and a time when the red signal lamp 11 is turned on in the prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary signal system for restricting traffic on one side for use in road construction or the like.

[0002]

2. Description of the Related Art At a road construction site, an accident site, and the like, a temporary signal system for restricting traffic on one side by using a plurality of traffic lights is used. In this temporary signal system, traffic signals are temporarily installed at the entrance and exit etc. of the traffic regulation section,
By switching a signal light such as a red signal light or a green signal light and displaying a signal, the vehicle or the like in one direction is stopped, and after the vehicle or the like in the other direction is passed, the vehicle or the like in the other direction is stopped. At the same time, the regulation of passing a vehicle or the like in one direction is repeated so that the traffic on one side is regulated. In general, the traffic light is regulated by alternately repeating the display of the red signal light and the green signal light at preset time intervals while synchronizing the lighting between the traffic lights.

[0003] However, when a temporary signal system for switching the display of the red signal light and the green signal light at such a preset time interval is used, places where the traffic flow greatly changes depending on the time zone, etc. Although the flow flows smoothly, there is a problem that it is difficult to balance the entire traffic flow, as the flow of the lane in the other direction causes traffic congestion.

[0004] Therefore, for example, Japanese Patent Application Laid-Open No. HEI 5-15919.
As shown in No. 7, a temporary signal system in which a vehicle passing number detecting means for detecting the number of vehicles passing through a traffic light portion is provided, and the lighting time of a green traffic light is adjusted according to the detected number of vehicles, As shown in Japanese Unexamined Patent Publication No. Hei 7-21490, a vehicle detecting means is provided at a position distant from the traffic light to determine the number of waiting vehicles, and the number of waiting vehicles is compared with a preset allowable waiting number to turn on the green traffic light. A temporary signal system in which the time is adjusted has been studied.

However, in the case of a temporary signal system as disclosed in Japanese Patent Application Laid-Open No. Hei 5-159197, the number of vehicles that can pass in a given time tends to change depending on the size and traveling speed of the vehicle. There is a problem that a difference easily occurs between the number of vehicles and a problem that a difference easily occurs particularly when a motorcycle is included. In the case of a temporary signal system as disclosed in Japanese Patent Application Laid-Open No. Hei 7-21490, if the number of waiting units is less than a preset allowable waiting unit, no adjustment is made, and the preset allowable waiting unit has a large traffic volume. Since it is generally set based on the time, there is a problem that it is difficult to balance the entire traffic flow when the traffic volume is small.

For this reason, a traffic light having a traffic light is provided at each entrance of a traffic regulation section, and the lighting of the traffic light is controlled by controlling the lighting of the traffic light of each traffic light. Even if there is
There is a need for a temporary signal system that can easily balance the overall traffic flow and enable stable one-sided traffic regulation.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a traffic light having a red signal light and a green signal light at an entrance of a traffic regulation section. Each is a temporary signal system that regulates traffic on one side by controlling the lighting of signal lights on each traffic light. Even if there is a difference in the traffic volume in both directions, the balance of the overall traffic flow It is an object of the present invention to provide a temporary signal system which is easy to take and which enables stable one-sided traffic regulation.

[0008]

According to a first aspect of the present invention, there is provided a temporary signal system provided with a red light and a green light at an entrance of a traffic regulation section to control lighting of each signal. A temporary signal system for restricting traffic on one side by means of a traffic signal, wherein each traffic signal is provided with stop time detecting means for detecting a stop time of a vehicle closest to the traffic regulation section among vehicles stopped by the traffic signal. And control means for adjusting the lighting of the signal lamp of each traffic light in accordance with the stop time of the vehicle detected by the stop time detecting means.

According to a second aspect of the present invention, there is provided the temporary signal system according to the first aspect, wherein the control means adjusts the lighting of the signal lamp of each traffic light.
During a predetermined time that is equal to or longer than the time from when the green traffic light of any one of the traffic lights starts to light until the green traffic light of the next cycle of the traffic light starts to light, the stop time detection means detects the vehicle Using the stop time p and the time q during which the red traffic light is turned on during the predetermined time, a vehicle stop time ratio r represented by the following equation (a) is obtained for each signal, and the vehicle stop time for each signal is obtained. The ratio between the rate r and the time for turning on the green traffic light is
The method is characterized in that the time for turning on the green traffic light is adjusted so as to be equal between the traffic lights. r = p / q (a)

A temporary signal system according to a third aspect of the present invention is the temporary signal system according to the first or second aspect, wherein the vehicle stop time ratio r of all traffic signals is equal to or less than a preset value. A flashing means for changing the lighting of the signal light of each traffic light to the flashing operation of the red signal light.

In the temporary signal system according to a fourth aspect of the present invention, a traffic light having a red traffic light and a green traffic light is provided at each entrance of a traffic regulation section, and the traffic light is controlled by controlling the lighting of the traffic light on one side. A vehicle passing detection means for detecting passage of a vehicle in a lane regulated by the traffic light, and a position of at least two vehicles away from the traffic light in a train of vehicles stopped by the traffic light. Vehicle stop detection means for detecting the stop state of the vehicle is provided for each traffic light, and the vehicle stop detection means for any one of the traffic lights detects the stop of the vehicle, and the vehicle passing detection of the traffic lights excluding the detected traffic light When the means has not detected the vehicle for a predetermined time or more, the red light of the traffic light is turned on except for the traffic light including the vehicle stop detection means that has detected the stop. Control means for turning off the signal light, then turning on the green signal light of the traffic light provided with the vehicle stop detection means that has detected the stop after a preset time has elapsed, and controlling to turn off the red signal light. .

According to the temporary signal system according to the first aspect of the present invention, the time for turning on the green traffic light is adjusted by using the stop time of the vehicle closest to the traffic regulation section among the vehicles stopped by the traffic light. As a result, there is a difference in the traffic volume between the two-way lanes because it is not affected by the size and traffic speed of the vehicle, and is adjusted so that the green traffic light in the lane with the large traffic volume is turned on for a longer time. Even in this case, it is easy to balance the entire traffic flow, and stable one-sided traffic regulation can be achieved.

According to the temporary signal system according to the fourth aspect of the present invention, when there is a large difference in the traffic volume of the two-way traffic lane and the traffic volume of one traffic lane is particularly small, the vehicle is moved to the traffic lane with a particularly small traffic volume. As long as there is no traffic, the lane with a large traffic volume can be continuously turned on by the green traffic light, so that the overall traffic flow can be easily balanced and stable one-sided traffic regulation can be achieved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A temporary signal system according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an embodiment of a temporary signal system according to claim 1 of the present invention, and FIG. 2 is a diagram illustrating an embodiment of a temporary signal system according to claim 4 of the present invention. is there.

As shown in FIG. 1, one embodiment of the temporary signal system according to the present invention is to change the traffic lights 1a and 1b provided with the red signal light 11 and the green signal light 12 to the entrance of the traffic regulation section 4. Are provided near the stop lines 3 and 3, respectively.
This is a temporary signal system that controls lighting of the signal lights (11, 12) of the traffic signals 1a, 1b to restrict traffic on one side. The stop time detecting means 13 for detecting the stop time of the vehicle 2 closest to the traffic regulation section 4 among the vehicles 2 stopped by the traffic lights 1a and 1b is used for each of the traffic lights 1a and 1b.
And a control means (not shown) connected to the stop time detecting means 13 of each of the traffic lights 1a and 1b is provided in one of the traffic lights 1a.

In the control means, each signal 1
The stop time detection means 13 of a and 1b is expressed by the following equation (a) using the stop time p of the vehicle detected during the predetermined time and the time q during which the red traffic light is turned on during the predetermined time. The vehicle stop time ratio r is determined for each of the traffic lights 1a and 1b. r = p / q (a)

During a predetermined time for detecting the stop time p of the vehicle, after the green signal light 12 of one of the traffic lights 1a starts lighting, the green signal light 12 of the next cycle of the traffic light 1a starts lighting. The lighting time is not particularly limited as long as it is equal to or longer than one cycle of lighting before the lighting is performed, but it is preferable that the time of several cycles of lighting is several times that because data in which the traffic amount of the vehicle 2 is averaged can be obtained. . In the case where the detection is performed over a plurality of cycles, the total stop time of the vehicle 2 closest to the traffic regulation section 4 detected in each cycle and the time when the red traffic light is turned on in the plurality of cycles are determined. The vehicle stop time rate is obtained using the sum. In the case where the detection is performed in five or more cycles, the influence of the cycle started and ended in the middle becomes small, so that the start and the end do not have to be performed at the break of the cycle.

Next, in the control means, the vehicle stop time ratios r1 and r2 for each of the traffic lights 1a and 1b and the green traffic light 1
As shown in the following equation (b), the ratio of the times s1 and s2 for turning on the light 2 is equal between the traffic lights 1a and 1b.
The times s1 and s2 for turning on the green signal light 12 are adjusted. r1: s1 = r2: s2 (b)

As an adjustment method, for example, by modifying the above equation (b), for example,
The time s1 during which the new green traffic light 12 of a is turned on is calculated by the equation represented by the following equation (c). s1 = (r1 / r2) × s2 (c)

At this time, the green traffic light 12 of one traffic light 1a is turned off before the green traffic light 12 of the other traffic light 1b is turned off.
It is preferable that the time during which the red traffic light 11 is turned on in both directions until the light is turned on is not changed. In addition, the shortest value of the times s1 and s2 for turning on the green signal light 12 is determined in advance, and if the value calculated by the above equation (c) is less than the shortest value, the green signal light 12 of each of the traffic lights 1a and 1b is turned off. The lighting time s without changing the ratio of the lighting time s1 and s2
It is preferable to increase the length of 1 and s2 so as to match the shortest value because the flow of the lane with a small traffic amount is stable. In addition, the maximum value of the length of one lighting cycle is determined in advance,
When the length of one lighting cycle calculated by the above equation (c) or the like exceeds the maximum value, the lighting is performed without changing the ratio of the lighting times s1 and s2 of the green traffic lights 12 of the traffic lights 1a and 1b. The times s1 and s2 may be shortened.

As described above, the time s for turning on the green traffic light 12 using the stop time of the vehicle 2 closest to the traffic regulation section 4 among the vehicles 2 stopped by the traffic lights 1a and 1b.
1 and s2 are adjusted so that they are not affected by the size and the traveling speed of the vehicle, and are adjusted so that the time s1 during which the green traffic light 12 of the lane with a large traffic volume is turned on is lengthened. Even if there is a difference in the traffic volume of the lane in the direction, it is easy to balance the overall traffic flow,
Stable one-way traffic regulation becomes possible. In addition, since the control can be performed in the same manner when the traffic amount is small and when the traffic amount is large, the effect that the structure of the control means can be a simple structure can be obtained.

In this temporary signal system, when the vehicle stop time ratios r1 and r2 of all the traffic signals 1a and 1b are equal to or less than a preset value, the lighting of the traffic lights of each traffic signal is performed.
Blinking means for changing to a blinking operation of a red traffic light may be provided. In this case, the blinking operation is performed particularly at night or when the traffic volume is small, so that the vehicle is less likely to stop at the red traffic light 11 when the traffic volume is small, and the traffic flow is further improved, which is preferable. The preset value for changing to the flashing operation of the red traffic light is not particularly limited, and may be appropriately set based on the traffic amount at night or the like.

In one embodiment of the temporary signal system according to claim 4 of the present invention, as shown in FIG. 2, the traffic lights 1a and 1b having the red signal light 11 and the green signal light 12 are connected to the entrance of the traffic regulation section 4. Are provided near the stop lines 3 and 3, respectively.
This is a temporary signal system that controls lighting of the signal lights (11, 12) of the traffic signals 1a, 1b to restrict traffic on one side. The vehicle passage detecting means 17 detects the passage of the vehicle 2 in the lane regulated by the traffic lights 1a and 1b, and at least the vehicle 2 from the traffic lights 1a and 1b in the train of vehicles 2 stopped by the traffic lights 1a and 1b. Vehicle stop detecting means 18 for detecting a stop state of the vehicle 2 at a position separated by two or more vehicles is provided in each of the traffic lights 1a and 1b, and the vehicle passage detecting means 17 and the vehicle stop detecting means 18 of each of the traffic lights 1a and 1b are provided. A control means (not shown) connected to the first traffic light 1a is provided.

In the control means, the vehicle stop detecting means 18 of the one traffic light 1a detects the stop of the vehicle 2,
In addition, when the vehicle passage detecting means 17 of the traffic light 1b except the detected traffic light 1a does not detect the vehicle 2 for a predetermined time or more, the traffic light 1b excluding the traffic light 1a including the vehicle stop detecting means 18 that has detected the stoppage is detected. The red signal light 11 is turned on and the green signal light 12 is turned off. Then, after a predetermined time has elapsed, the green signal light 12 of the traffic light 1a including the vehicle stop detecting means 18 that has detected the stop is turned on and the red signal light 11 is turned off. Control is performed.

In addition, the red signal light 11 of the traffic light 1b except the traffic light 1a provided with the vehicle stop detecting means 18 which detects the stop, which is controlled by the control means, is turned on and the green signal light 12 is turned on.
Turning off the vehicle, and the vehicle stop detecting means 1 detecting the stop
The preset time between the step of turning on the green signal light 12 and the step of turning off the red signal light 11 of the traffic light 1a provided with 8 is the time in which the red signal light 11 is turned on in both directions,
The time during which all the vehicles 2 in the lane trying to pass by lighting of the green traffic light 12 can pass through the traffic regulation section 4 sufficiently,
What is necessary is just to set suitably.

Therefore, when there is a large difference in the traffic volume of the two-way lanes and the traffic volume of one lane is particularly small, while the traffic of the vehicle 2 is not in the lane with the particularly small traffic volume, the lane with the large traffic volume , The green traffic light 12 can be turned on continuously, so that the overall traffic flow can be easily balanced, and stable one-sided traffic regulation can be achieved. In addition, of the vehicles 2 stopped by the traffic lights 1a and 1b, not the vehicle 2 closest to the traffic regulation section 4 but the vehicle 2 at a position at least two vehicles 2 away from the traffic lights 1a and 1b. Is detected and controlled,
Excessive time for the red signal light 11 to light in both directions is not provided, and the overall traffic flow is improved.

It should be noted that the traffic light 1a detecting the stop of the vehicle 2
When the vehicle passage detecting means 17 of the traffic light 1b except for the above does not detect the vehicle 2, the above-mentioned predetermined time during which the control means performs control may be appropriately set according to the traffic amount of the vehicle 2.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, traffic lights 1a and 1b having a red traffic light 11 and a green traffic light 12 are provided near the entrance of a traffic regulation section 4, respectively, and the traffic lights (11 and 12) of each traffic light 1a and 1b are provided. Is a temporary signal system for controlling the traffic lights to regulate traffic on one side, and the traffic lights 1a and 1b
Out of the vehicles 2 that are stopped, the stop time detecting means 13 for detecting the stop time of the vehicle 2 closest to the traffic regulation section 4 is provided in each of the traffic lights 1a, 1b, and each of the traffic lights 1a, 1b.
One-sided traffic regulation was performed using a temporary signal system provided with control means connected to the stop time detecting means 13 of b in one of the traffic lights 1a.

Then, the time s1 and s2 for turning on the green signal lights 12 of both the traffic lights 1a and 1b are each 30 seconds, and the time for turning on the red signal lights 11 is 20 seconds in both directions, for a total of 100 seconds (= 30). × 2 + 20 × 2) as one cycle of lighting, and one-way traffic regulation was started. After an appropriate time has elapsed, in the control means, the stop time detecting means 13 of each of the traffic lights 1a and 1b detects the stop times p1 and p2 of the vehicle detected during the three cycles of lighting, respectively. The time q1 at which the red signal light 11 was turned on,
Using q2, the vehicle stop time ratios r1 and r2 represented by the above equation (a) were obtained for each of the traffic lights 1a and 1b. As shown in Table 1, the value was 0.3 for one traffic light 1a and 0.6 for the other traffic light 1b.

[0030]

[Table 1]

Next, the time s1 for turning on the green traffic light 12 per new lighting cycle using the above equation (c) and the like.
When 1 and s12 were obtained, as shown in Table 1, one traffic light 1a was 15 seconds and the other traffic light 1b was 60 seconds. Therefore, the times s11 and s12 for turning on the green signal light 12 per one cycle of lighting are changed to these 15 seconds and 60 seconds, and the time for turning on the red signal light 11 in both directions is 115 seconds in total in both directions. Seconds (= 15
(+ 60 + 20 × 2) was changed to one cycle of lighting, and one-way traffic regulation was performed.

After an appropriate period of time, the stop times p1 and p2 of the vehicle were measured by the same method. As shown in Table 2, the difference between the stop times p1 and p2 of both vehicles became small, It was confirmed that the traffic flow was easy to balance and stable one-way traffic regulation was possible. Similarly, when the times s11 and s12 for turning on the green traffic light 12 per new lighting cycle were obtained,
As shown in Table 2, the traffic light 1a is 1
5 seconds and the other traffic light 1b was 60 seconds.

[0033]

[Table 2]

[0034]

The temporary signal system according to the first and second aspects of the present invention is a system for turning on the green traffic light using the stop time of the vehicle closest to the traffic regulation section among the vehicles stopped by the traffic light. Is not affected by the size and speed of the vehicle, and is adjusted to extend the time for which the green traffic light on the lane with a large traffic volume lights up. Even if there is a difference in the traffic volume, it is easy to balance the flow of the entire traffic, and stable one-sided traffic regulation becomes possible.

In the temporary signal system according to the third aspect of the present invention, when the traffic volume is small, it is less likely to stop at the red light, and the traffic flow is particularly good.

In the temporary signal system according to the fourth aspect of the present invention, when there is a large difference in the traffic volume of the two-way traffic lane and the traffic volume of one traffic lane is particularly small, the traffic of the vehicle passes through the traffic lane with a particularly small traffic volume. As long as there is no traffic, the lane with a large traffic volume can be continuously turned on by a green traffic light, so that the overall traffic flow can be easily balanced and stable one-way traffic regulation can be achieved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a temporary signal system according to claim 1 of the present invention.

FIG. 2 is a diagram illustrating an embodiment of a temporary signal system according to claim 4 of the present invention.

[Explanation of symbols]

 1a, 1b Traffic light 2 Vehicle 3 Stop line 4 Traffic regulation section 11 Red signal light 12 Blue signal light 13 Stop time detecting means 17 Vehicle passing detecting means 18 Vehicle passing detecting means

Claims (4)

[Claims] 1. A temporary signal system for providing a traffic light provided with a red traffic light and a green traffic light at an entrance of a traffic regulation section and controlling the lighting of the traffic light of each traffic light to regulate traffic on one side. A stop time detecting means for detecting a stop time of the vehicle closest to the traffic regulation section among the vehicles stopped by each traffic light is provided, and each of the traffic lights is controlled in accordance with the stop time of the vehicle detected by the stop time detecting means of each traffic light. A temporary signal system comprising a control means for adjusting the lighting of the signal light. 2. A method of adjusting the lighting of the signal light of each traffic light in the control means, from when the green traffic light of one of the traffic lights starts to light until the green light of the next cycle of the traffic light starts to light. A stop time p of the vehicle detected by the stop time detecting means during a predetermined time equal to or longer than the time between
Using the time q during which the red traffic light was turned on during the predetermined time,
The vehicle stop time ratio r represented by the following equation (a) is obtained for each traffic light, and the ratio of the vehicle stop time ratio r for each traffic light to the time for turning on the green traffic light is made equal between the traffic lights. 2. The temporary signal system according to claim 1, wherein the method is a method of adjusting a time for turning on a green traffic light. r = p / q (a) 3. The system according to claim 1, further comprising a blinking means for changing the lighting of the signal lights of each of the traffic lights to the blinking of the red traffic lights when the vehicle stop time ratios r of all the traffic lights are equal to or less than a preset value. The temporary signal system according to claim 1 or 2, wherein 4. A temporary signal system for providing a traffic light having a red light and a green light at an entrance of a traffic regulation section, and controlling the lighting of the traffic light of each traffic light to regulate traffic on one side. Vehicle detection means for detecting the passage of a vehicle in the lane regulated by the vehicle, and at least the vehicle 2
Vehicle stop detecting means for detecting a stop state of a vehicle at a distance of more than one vehicle is provided for each traffic light, and the vehicle stop detecting means of any of the traffic lights detects the stop of the vehicle, and the detected traffic light If the vehicle passage detection means of the traffic light except for detecting the vehicle for a predetermined time or more, turns on the red traffic light of the traffic light except the traffic light equipped with the vehicle stop detection means that has detected the stop and turns off the green traffic light, and then A temporary signal system comprising: control means for turning on a green signal light and turning off a red signal light of a traffic light provided with a vehicle stop detecting means for detecting a stop after a preset time has elapsed.