JPH09231497A - Signal device for one-way traffic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly pass vehicles in accordance with traffic volume by using a sensitively controlled one-way traffic signal device. SOLUTION: Picture processing sensors 8, 9 are arranged correspondingly to respective signals 6, 7. A sensitive controller 20 is provided with a vehicle measuring means 10 for processing picture data obtained from the sensors 8, 9 and detecting the number of vehicles in respective measuring sections K, K prepared ahead of the signals 6, 7. When data indicating the existence of one or more vehicles are inputted to the signal 6 or 7 lighting green light, a lighting time control means 24 controls the signal 6 or 7 so as to continue the lighting of the green light, and at the time of inputting data indicating no vehicle, turns the signal 6 or 7 to red. When data indicating the existence of one or more vehicles in the red signal side 7 or 6 side is inputted during the input of data indicating the existence of one or more vehicles in the green signal 6 or 7 side, the means 24 turns both the signals 6, 7 to red after the lapse of fixed time from the input.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-sided traffic signal device having two-position type traffic lights temporarily installed at both ends of a road construction section for one-sided traffic.

[0002]

Conventionally, in a road construction section, when up and down vehicles are alternately passed by one-side traffic, traffic lights are temporarily installed on both sides of the construction section, and one-side traffic control is performed by these traffic lights. As the traffic light, a two-position type that uses red and blue switching lighting display is used. During the blue lighting time of one traffic light, the other traffic light is turned on red and switching from blue to red lighting is performed. Both traffic lights are lit in full red while the vehicle that has just entered is passing through the construction section. However, this is to manually set the up and down blue and red lighting time, and it is difficult to respond to changes in traffic volume, so if there is a large amount of traffic from one side and a small amount of traffic from the other side, There was a problem that the waiting time on one side became long and congestion was likely to occur.
For this reason, for example, in Japanese Unexamined Patent Publication No. 3-62198, traffic lights and detection means for detecting the number of vehicles are installed at both ends of a construction section so that the blue lighting time of the traffic light on the side with a large number of vehicles is long. Traffic signal control devices for controlling have been proposed.

[0003] Also, Japanese Patent Application Laid-Open No. Hei 5-40897 discloses that
After the basic extension timer times out, the specified time is the basic time plus several additional times based on the signal emitted from the detector on the advancing side, and this signal is not emitted within a certain time Sometimes the basic time is shortened or the green light time of the signal lamp on the advancing side is controlled by the control circuit that reduces the additional time added to the basic time and shortens the specified time, and the basic time and the additional time timer are set as specified. In order to operate sequentially, an alternating traffic signal control device has been proposed, which performs sensitive control on condition that the traveling vehicle detection timer longer than the basic time timer does not time up.

The above traffic signal control device is provided with a control means for controlling the blue lighting time of the traffic lights on the side with many waiting vehicles to be long. Even if the length is increased, it is difficult to reduce the waiting time of the vehicle unless traffic signals are switched according to the traffic volume, and smooth traffic cannot be secured.

Further, in the above alternating traffic signal control device,
Even if the traffic volume on one side is low, if one turns on in blue, the basic extension timer will time out, and the traffic light will not switch even after the basic time has elapsed. Even if there is a break, it is expected that the traffic light will not switch immediately and the switching time will be lost.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a one-sided traffic signal device capable of efficiently passing a vehicle in both directions depending on the presence or absence of a signal waiting vehicle and a following vehicle in a measurement section.

[0007]

According to a first aspect of the present invention, two-position type traffic lights temporarily installed at both ends of a road construction section where uphill and downhill vehicles pass alternately, and on both sides of the road construction section. Detecting means provided corresponding to each traffic light, and controlling the lighting time of the corresponding traffic light by the vehicle data detected by these detecting means to control the up and down traffic lights to blue and red, all red, and red, respectively. In a one-sided traffic signal device including a sensitive control device that performs a sensitive control that sequentially switches to blue and all red lighting, the detection means is an image processing sensor that detects image data of the vehicle, and the sensitive control device is Vehicle measurement means for image-processing the image data to detect presence / absence of data of a vehicle in a measurement section in front of a traffic light, and lighting time control means for switching the traffic light according to the presence / absence of data of the vehicle. And than by the presence or absence of a vehicle of the traffic in front of the measurement interval, sensitive control traffic.

According to a second aspect of the present invention, the lighting time control means controls so that the blue lighting is continued while the vehicle-existing data is input to the blue lighting signal side, and the lighting of the vehicle is turned off. When data is input, it switches to red lighting, and while vehicle data is being input to the blue-lit traffic light side, if vehicle data is input to the red-lighted traffic light side, a certain time has elapsed from this input. After that, it is controlled to switch to full red lighting.While the data on the side of the traffic light that lights in blue is input, the vehicle is in an uninterrupted state, so the data on the side of the traffic light that lights in red does not enter. On the condition that it continues to light blue, let the vehicle on the blue lighting side pass efficiently,
If no data is input to the traffic light that lights in blue, it means that there is no vehicle in the measurement section. Also, if there is data input to the red-lighted traffic light side while inputting data on the blue-lighted traffic light side, there may be a vehicle waiting for the signal on the red-lighted side. Even if the existing data on the side continues to be input, it switches to full red lighting after a certain period of time.

According to a third aspect of the invention, the vehicle measuring means is
The image data is image-processed to detect the number-of-vehicles data in the measurement section, and the sensitive control device, while the data with the vehicle is input to the traffic light side that lights blue, turns on the traffic light side that lights red. When the existing data of the vehicle is input, the data of the number of both vehicles are compared and the control is performed so as to switch to the all red lighting before the elapse of the predetermined time, and while the existing data of the traffic light side of the blue lighting is input. In the case where existing data is input to the red-lighted traffic light side, for example, there are few vehicles on the blue-lighted side,
When the number of vehicles waiting for traffic lights on the red lighting side increases, the traffic lights that light blue are switched to red lighting and all red lighting is performed before a certain period of time elapses.

According to a fourth aspect of the present invention, the sensitive control device comprises:
Image processing of the image data is performed to detect when the vehicle enters or passes through the road construction section, and the time required for passing through the road construction section is calculated from these intrusions and passages, and the red lighting time is automatically calculated based on this time. It is equipped with an all-red time automatic learning means to be set.
The required time for passing through the road construction section is calculated from the number, etc., and the total red time is automatically set by this, so the total red time is adjusted according to the actual vehicle transit time that changes depending on the time zone and weather conditions. Can be set automatically.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a first embodiment of the present invention, in which a road 1 has two lanes, an up lane 2 and a down lane 3, and in this example, the up lane 2 is a road construction 4
Accordingly, the road is closed, and the section of the one-side regulation length L meter is the road construction section 5 in which the up and down vehicles alternately pass. Simplified traffic traffic lights 6 and 7 are temporarily installed at both the up and down ends of this road construction section 5, and these traffic lights 6 and 7 are those that can switch between blue and red lights of the second place and each blinking. Used. Reference numerals 8 and 9 denote image processing sensors, which are detection means provided corresponding to the traffic signals 6 and 7, and are equipped with an optical camera with a lens, and as shown in FIG. Image data is obtained from diagonally above. Further, a vehicle control means 10 for detecting the number of vehicles data by graphically processing the image data photographed by the optical photographing device is provided in the sensitive control device described later. Then, in this example, the number-of-vehicles data of each lane 2, 3 in the measurement section K, K before the traffic lights 6, 7 is detected. In this case, the measurement sections K, K are set to about 60 meters, which is the distance traveled by the vehicle at an average speed of 20 km / h in about 10 seconds. In addition, 11 in the figure is the stop line position which is the end point on the road construction section 5 side of the measurement section K,
12 is the starting point position of the measurement section K.

Reference numeral 20 denotes a sensitive control device equipped with a CPU or the like for controlling blue or red lighting of the traffic lights 6, 7 according to vehicle data detected by the image processing sensors 8, 9. 8 and 9. The sensitive control device 20 is electrically connected to the image processing sensors 8 and 9 and the traffic signals 6 and 7 through an electric cable or is connected by a wireless remote controller. By means of the device 20, the traffic lights 6 and 7 are blue on one side and red on the other side, both of which are all red, one red and the other blue, and further red
Lighting display is performed by the cycle, and this lighting display includes blinking display. The sensitive control device 20 is provided with a time measuring means 21 such as a timer for counting the passage of time and a lighting time setting means 22, and the lighting time setting means 22 uses the set value input means 23 such as a keyboard to operate the traffic signal. 6,
The maximum green time Tmax, which is a constant time common to all seven, and the total red time Tr for simultaneously turning on both traffic lights 6 and 7 in red can be arbitrarily set. These are the lighting time setting means 22. Remembers. The maximum green time Tmax
In the control of the lighting time control means 24, which will be described later, the data on the number of one or more vehicles on the side of one traffic light that lights in blue continues and the data of the number of one or more vehicles on the side of the traffic light that lights in red is input If you do, the other vehicle number data is 1
It is the time from when the number of vehicles exceeds the limit to when one of the traffic lights that lights in blue switches to red.

The total red time Tr is obtained by the following equation.

Tr = L / Vave where Vave is the average speed of the vehicle passing through the road construction section 5, and it is assumed that a vehicle having an average speed of 20 km / hour passes through the one-side regulation length L meter. 5.
The total red time Tr is obtained by dividing the total red time Tr by 6 m / sec, and this total red time Tr is equal to the average time that the vehicle travels through the road construction section 5.

Further, the sensitive control device 20 is provided with a lighting time control means 24 for controlling the blue and red lighting times of the traffic lights 6 and 7, and the lighting time control means 24 controls the image processing sensor 8, Sensitive control of the traffic signals 6 and 7 is performed based on the vehicle number data from 9. In this case, when there is no vehicle in the corresponding lanes 2 and 3 of both measurement sections, the lighting time control means 24 is in the standby mode, and both traffic lights 6 and 7 are lit in red. In this standby mode, when data on the number of one or more vehicles is input from the image processing sensors 8 and 9 to the lighting time control means 24, the traffic light 6 on the input side is switched to blue lighting from the time of the input. Then, one or more vehicle detection data is the existing data of the vehicle, and 0 vehicle detection data is the no data of the vehicle.

Next, an example of control of the traffic lights 6 and 7 by the lighting time control means 24 of the sensitive control device 20 will be described with reference to the flowchart of FIG. In the "standby mode" in which both traffic lights 6 and 7 are lit in red, one of the traffic lights 6 that has been switched to blue lighting by inputting the data of the number of one or more vehicles first
In the determination of "one-side vehicle number data", when "0" number of vehicle number data from one image processing sensor 8 is input, "all red lighting" is switched to red lighting, and all red time Tr is reached. . That is, the fact that the number of vehicles on the blue lighting side is 0 means that all the vehicles corresponding to the number of vehicles of one or more vehicles pass through the stop line position and enter the road construction section 5, and There is no continuous vehicle 60 meters behind the invading last vehicle, which is the length of the measurement section K, and there is no vehicle in the measurement section K on the blue lighting side. Then, until the full red time Tr elapses, if the determination based on the "data on both vehicle numbers after full red" is "0 for both", "Tr end" is entered and the "standby mode" is entered. That is, "0 for both" and "T
“Ending r” means that there is no vehicle in both measurement sections K, K within the full red time Tr.

As described above, after the traffic light 6 is switched to blue lighting by the data of the number of vehicles of one or more vehicles, the other traffic signal is conditioned on the condition that the "data of the number of one vehicle" is "one or more vehicles". The “other vehicle data” from the image processing sensor 9 on the 7 side is determined, and the “other vehicle data” is “0”.
In the case of, the blue lighting continues, and the "other vehicle data" is "1.
In the case of "more than unit", the lighting time control means 24 controls the blue lighting to check the elapsed time and continue the blue lighting until the maximum blue time Tmax is reached. in this way,
On the condition that the number of one vehicle that has been lit in blue continues to be 1 or more, one of the traffic lights 6 continues to be lit in blue while the number of the other vehicle number data is 0. When the vehicle number data continues to be one or more and the other vehicle number data of one or more vehicles is input, all red lights are lit after the maximum green time Tmax has elapsed from this input. That is, when there is no signal waiting vehicle in the other measurement section K and the vehicles in the one measurement section K are not interrupted, one traffic signal 6 continues to illuminate in blue indefinitely, When a vehicle enters the other measurement section K, all red lights up after the maximum green time Tmax has elapsed from the time the vehicle entered the measurement section K. Then, when the data of the number of vehicles of one or more other vehicles is input, it is the time when the vehicles reach the end of the measurement section K. Therefore, in this example, it takes about 10 seconds to travel to the stop line position. The vehicle has a maximum green time Tma
It suffices to wait for a signal for a time obtained by subtracting 10 seconds of the traveling time from x and the total red time Tr.

Further, the "one-sided vehicle number data" is "0"
When "all red lights on", the judgment is made based on "data of both vehicles after full red", and when the total red time Tr has elapsed for "both 0", the "standby mode" is entered. In other words, the shift to the standby mode is 1 of the one measurement section K.
This is a case where there are no vehicles in both measurement sections K, K until the full red time Tr ends after the passage of more than one vehicle, and when vehicles in both directions are interrupted in this way, both traffic signals 6 are generated in the standby mode. 7 turns red. Also, the "one-sided vehicle number data" changes from "0" to "all red lights",
In the determination based on the "data number of both vehicles after all red", when one or more vehicle number data of one or the other is input, if one or more vehicle number data is input first from one image processing sensor 8, Simultaneously with this input, one of the traffic lights 6 lights up in blue. That is, in the total red time Tr, if a vehicle enters the measurement section K on the side switched from blue to red before the other, before the end of the total red time Tr, one or more vehicle number data of one of them As a result, one traffic light 6 is switched to blue again, and the other traffic light 7 is lit red during this time. Furthermore, the "one-sided vehicle number data" is "0.
From the "vehicle" to "all red lighting", and in the determination based on "data of both vehicles after all red", one or more vehicles from the other image processing sensor 9 at the same time as the one image processing sensor 9 or before When the number-of-units data is input, the other traffic signal 7 is switched to blue lighting after the full red time Tr has elapsed, and similar control is performed.

Further, after the "one-side blue lighting", the "other-vehicle number data" is "1 or more", and the one-vehicle number data is "0" or "full red" after completion of the maximum blue time Tmax. When it is switched to "light on", the other image processing sensor 9
From the above, one or more vehicle number data is input at the same time as or before the one image processing sensor 8, so that the other traffic signal 7 is switched to blue lighting after the full red time Tr has elapsed after red lighting. Control is performed. That is, "one-sided blue lighting"
If the "other vehicle number data" is "1 or more" and the process shifts to "all red lighting", while one of the traffic lights 6 is lit in blue,
Since the vehicle exists in the other measurement section K in a signal waiting state, the other traffic signal 7 is promptly switched to blue lighting after the lapse of the full red time Tr. FIG. 4 is a diagram for explaining the lighting of the traffic signals 6 and 7 when there are continuous vehicles in both measurement sections K and K after the standby mode and data of the number of one or more vehicles is continuous in both of them. .

Further, the lighting time control means 24 has an all-red time automatic learning means 25, and the vehicle measuring means 10 performs image processing on the image data to recognize the vehicle from a model, a color, a number, etc. The all-red-time automatic learning means 25 uses one of the image processing sensors 8 and 9 to detect one stop line position 11 of the vehicle.
Is calculated and stored, and the other image processing sensor 9,
8, the time when the vehicle passes the other stop line position 11 is calculated and stored, and the time difference between both is calculated, and this time difference is necessary for the vehicle to pass the section of the one-side regulation length L meters. Since it is a different time, the value of the time difference is input to the lighting time setting means 24. In this case, one of the image processing sensors 8 and 9 detects the image data of the approaching vehicle,
Since the other image processing sensors 9 and 8 detect the image data of the moving vehicle, a method of recognizing the vehicle by the number is preferable.

As described above, in the present embodiment, according to claim 1, the two-position type traffic lights 6 and 7 temporarily installed at both ends of the road construction section 5 where the up and down vehicles alternately pass, and the road. Detecting means provided on both sides of the construction section 5 corresponding to the respective traffic lights 6 and 7, and the lighting time of the corresponding traffic lights 6 and 7 is controlled by the vehicle data detected by these detecting means to control the up and down traffic lights. In a one-sided traffic signal device including a sensitive control device 20 that performs sensitive control for sequentially switching 6 and 7 to blue and red, all red, red and blue, and all red lighting, the detection means detects vehicle image data. The image processing sensors 8 and 9 are provided, and the sensitive control device 20 performs the image processing on the image data to detect the presence / absence of data of the vehicle in the measurement section K before the traffic signals 6 and 7, and K. , Traffic lights 6, 7 depending on the presence or absence of vehicle data It is intended and a lighting time controller means 24 changing, before the measurement interval K traffic light 6, 7, K
Since the traffic lights 6 and 7 are sensitively controlled depending on the presence or absence of the vehicle, the vehicle can be passed efficiently.

As described above, in this embodiment, the second aspect
Corresponding to the above, the lighting time control means 24 controls so that the blue lighting is continued while the existing data of the vehicle is input to the traffic lights 6 and 7 side of the blue lighting, and there is no data of the vehicle. When you enter, it will switch to red lighting, and the blue traffic lights 6 and 7
If the vehicle-existing data is input to the red-lighted traffic lights 7, 6 while the vehicle-existing data is being input to that side, all red illumination is switched after the maximum blue time Tmax, which is a constant time from this input, has elapsed. Since the vehicle is in an uninterrupted state while the existing data of the traffic lights 6 and 7 that are lit in blue is being input, the available data of the traffic lights 7 and 6 that are lit in red is not input. Under this condition, the blue lighting is continued, the vehicles on the blue lighting 6 and 7 side are efficiently passed, and no data is input on the traffic lights 6 and 7 on the blue lighting. Since it is in the open state, it is immediately switched to red lighting. Also, if there is data input to the red-lighted traffic lights 7 and 6 while input data is being input to the blue-lighted traffic lights 6 and 7, it is because there is a vehicle waiting for the signal on the red-lighted side. , Even if the data input to the traffic lights 6 and 7 that are lit in blue continues, when the maximum blue time Tmax elapses, the lights are switched to all red.

Further, as described above, in this embodiment, in response to claim 4, the sensitive control device 20 performs image processing on the image data to detect when the vehicle enters the road construction section 5 and when it passes. The image processing sensors 8 and 9 are provided with the all-red time automatic learning means 25 that calculates the required time to pass through the road construction section 5 from the time of intrusion and the time of passage and automatically sets the total red time Tr based on this required time. Calculate the time required to pass the road construction section based on the vehicle type, color, number, etc.
As a result, the all-red time Tr is automatically set, so that the all-red time Tr can be set in accordance with the actual vehicle passing time that changes depending on the time zone, weather conditions, and the like.

FIG. 5 shows a second embodiment of the present invention, in which the same parts as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. When the number of vehicles on one side is compared with the number of vehicles on the red-lit side, and the number of vehicles on the red-lit side becomes larger than that on the blue-lit side, the number of vehicles that shift to "all red lighting" before the maximum blue time Tmax has elapsed. This is an example in which the data comparison means 26 is provided in the lighting time control means 25, and as shown in the flow chart of FIG. 2, in a state where the data of the number of one or more vehicles is input from both image processing sensors 8 and 9. , When the number of vehicles on the red-lit side becomes larger than that on the blue-lit side, it shifts to "all red lighting" before the maximum blue time Tmax elapses. In this state, both measurement sections K, K
There is a vehicle waiting for a traffic light, and the data of the number of vehicles of one or more vehicles is input from both in the judgment of "the number of vehicles of both vehicles after all red". When data is input, the process shifts to the judgment of "whether Tr has passed after red lighting", so that the other traffic light 7 which has been red lighting is switched to blue lighting first. Further, the vehicle number data comparison means 26 has a setting means (not shown), and the setting means causes the number of vehicles on the other side to be in the range of 1 to 5 times or more than one, or "all red lighting". The condition for shifting to (1) can be changed, and this condition is set such that at least the number of the other units is equal to or more than the one unit.

As described above, in this embodiment, the claims 1, 2,
4 has the same effect as the first embodiment,
Further, in this example, the vehicle measuring means is provided corresponding to claim 3.
Numeral 10 performs image processing on the image data to detect the number of vehicles in the measurement section K, K, and the sensitive control device 20 inputs the vehicle-existing data to the traffic lights 6 and 7 that are lit in blue. , When the existing data of the vehicle is input to the red-lighted traffic lights 7 and 8,
The data of the number of both vehicles are compared, and control is performed so as to switch to the all-red time Tr before the maximum green time Tmax has elapsed. When data is input to the red-lighted traffic lights 7, 6 side, for example, when there are few blue-lighted vehicles and the number of red-lighted signal-waiting vehicles increases, blue lighting occurs before the maximum blue time Tmax elapses. In order to switch the traffic lights 6 and 8 of red to red lighting so that the lights are all red, for example, the vehicles pass sparsely in one measurement section K at an inter-vehicle distance of about the length of the measurement section K, that is, one measurement When there are two or one vehicles in the section K and many vehicles are waiting for the signal in the other measurement section K, the total red color is reached before the maximum blue time Tmax elapses. Since it shifts to the time Tr, the waiting time of the other is reduced and efficiency is improved. There it is possible to perform the alternating traffic control.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the present invention. For example, the lighting time control means 24 may control so as to extend the maximum green time of the other traffic light when the traffic of one vehicle is low. further,
When a power failure or the like occurs, the function of the apparatus may be maintained for about 30 minutes by an internal battery (not shown). In the standby mode, both traffic lights may blink red. Further, even when the vehicle measuring means is provided on the image processing sensor side, the sensitive control device includes the vehicle measuring means.

[0027]

The invention of claim 1 corresponds to the two-position type traffic lights temporarily installed at both ends of the road construction section where up and down vehicles alternately pass, and each of the traffic signals on both sides of the road construction section. And the detection means provided by controlling the lighting time of the corresponding traffic light by the data of the vehicle detected by these detection means, the up and down traffic lights are blue and red respectively,
In a one-side traffic signal device equipped with a sensitive control device that performs a sensitive control for sequentially switching to all red, red and blue, and all red lighting,
The detection means is an image processing sensor for detecting image data of a vehicle, and the sensitive control device performs image processing on the image data to detect presence / absence of data of a vehicle in a measurement section before a traffic signal. And a lighting time control means for switching the traffic signal depending on the presence / absence of data of the vehicle, and one side capable of efficiently passing a vehicle in both directions depending on the presence or absence of a signal waiting vehicle and a following vehicle in the measurement section. A traffic signal can be provided.

According to a second aspect of the present invention, the lighting time control means controls the blue lighting to continue while the vehicle-existing data is input to the blue lighting signal side. When data is input, it switches to red lighting, and while vehicle data is being input to the blue-lit traffic light side, if vehicle data is input to the red-lighted traffic light side, a certain time has elapsed from this input. It is possible to provide a one-sided traffic light that can efficiently pass a vehicle in both directions depending on the presence / absence of a signal waiting vehicle and a following vehicle in the measurement section.

In the invention of claim 3, the vehicle measuring means is
The image data is image-processed to detect the number-of-vehicles data in the measurement section, and the sensitive control device, while the data with the vehicle is input to the traffic light side that lights blue, turns on the traffic light side that lights red. When the existing data of the vehicle is input, it is controlled to compare both vehicle number data and switch to full red lighting before the lapse of the predetermined time, and the number of vehicles waiting for a signal and the following vehicles in the measurement section. According to the information, it is possible to provide a one-sided traffic light that allows vehicles in both directions to pass through efficiently.

According to a fourth aspect of the present invention, the sensitive control device comprises:
Image processing of the image data is performed to detect when the vehicle enters or passes through the road construction section, and the time required for passing through the road construction section is calculated from these intrusions and passages, and the red lighting time is automatically calculated based on this time. It is equipped with a means for automatically learning the total red time, which can set the total red time according to the actual vehicle transit time that changes depending on the time of day, weather conditions, etc. It is possible to provide a one-sided traffic light that allows vehicles in both directions to pass efficiently depending on the presence / absence.

[Brief description of drawings]

FIG. 1 is an explanatory plan view showing a first embodiment of the present invention.

FIG. 2 is a flowchart showing a first embodiment of the present invention.

FIG. 3 is a diagram of image data detected by the image processing sensor according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a display of a traffic light when the number data of one or more vehicles continues in both directions according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing a second embodiment of the present invention.

[Explanation of symbols]

 1 road 2 up lane 3 down lane 5 road construction section 6,7 traffic light 8,9 image processing sensor 20 sensitive control device 22 lighting time setting means 24 lighting time control means 25 all red time automatic learning means Tmax maximum blue time (constant time)

Claims (4)

[Claims] 1. A two-position type traffic light temporarily installed at both ends of a road construction section where up and down vehicles alternately pass through, and detection means provided on both sides of the road construction section corresponding to each of the traffic signals. And sensitive control for controlling the lighting time of the corresponding traffic light according to the vehicle data detected by these detecting means to sequentially switch the up and down traffic lights to blue and red, all red, red and blue, all red lighting respectively. In the one-sided traffic signal device including a sensitive control device for performing, the detection means is an image processing sensor that detects image data of a vehicle, and the sensitive control device performs image processing of the image data to front the traffic light. One-sided traffic signal device comprising: vehicle measuring means for detecting presence / absence data of a vehicle in a measurement section; and lighting time control means for switching the traffic signal according to presence / absence data of the vehicle. . 2. The lighting time control means controls the blue lighting to continue while the vehicle-existing data is input to the blue-lighted traffic light side, and when no vehicle data is input, If the vehicle data is input to the red-lighted traffic light side while the vehicle-enabled data is input to the blue-lighted traffic light side, if all the vehicle data is input to the red-lighted traffic light side, all red lights will be lit after a certain time has elapsed from this input. The one-side traffic signal device according to claim 1, wherein the one-side traffic signal device is controlled so as to be switched. 3. The vehicle measuring means performs image processing on the image data to detect vehicle number data in the measurement section,
If the vehicle-existing data is input to the red-lighted traffic light side while the vehicle-existing data is input to the blue-lighting traffic light side, the sensitive control device compares both vehicle number data to obtain the constant value. 3. The one-side traffic signal device according to claim 2, wherein the one-side traffic signal device is controlled so as to be switched to the full red time before the lapse of time. 4. The sensitive control device performs image processing on the image data to detect when a vehicle enters a road construction section and when it passes, and calculates a road construction section transit time from these intrusions and passages. The one-side traffic signal device according to claim 1, further comprising an all-red time automatic learning means for automatically setting the all-red time according to the required time.