JP2020140597A - Traffic guidance system, construction traffic light and traffic guidance method - Google Patents

Abstract

To smoothly facilitate a passage of a vehicle in a construction section.SOLUTION: A server device 40 controls an indication (red light signal or green light signal) of a construction traffic light 10 while detecting a vehicle stopped at a stop line with a stop sensor 20. After the construction traffic light 10 under the control of the server device 40 indicates a green light signal, if an output of the stop sensor 20 indicates that there is a vehicle which remains stopped at the stop line even after a predetermined time has passed, the construction traffic light 10 notifies a driver of a change of the light signal by a voice output such as "it is green". Therefore, even if a driver misses the change to the green light, it is possible to promote a departure of the vehicle and realize smooth passage of the vehicle in the construction section.SELECTED DRAWING: Figure 1

Description

The present invention relates to a traffic guidance system, a construction signal, and a traffic guidance method capable of facilitating the passage of vehicles in a construction section.

Conventionally, when a municipality or the like uses a road construction company to perform road construction, traffic guidance is performed in order to ensure smooth passage of vehicles. Specifically, the security guard who guides the traffic asks the driver who drives each vehicle for any cooperation, and guides the progress of each vehicle smoothly.

In addition, if the traffic guidance provided by the guards is not sufficient, a temporary traffic light for construction work (hereinafter referred to as "construction traffic light") may be installed. For example, when road construction is carried out in a construction section where vehicles must alternate on one side, construction signals are installed at both ends of the construction section. This construction traffic light has a red signal display (hereinafter referred to as "red light") meaning "stop" and a green signal display (hereinafter referred to as "green signal") meaning "advance (possible to proceed)". ) And switch alternately.

Here, when using this type of construction signal, it is necessary to prevent a head-on collision of the vehicle in the construction section. For this reason, for example, Patent Document 1 describes a technique in which construction traffic lights are installed at both ends of a construction section from a certain traveling direction, and the red and green signals of the construction traffic lights are alternately lit and controlled.

Japanese Unexamined Patent Publication No. 2015-099508

However, the conventional technique has a problem that the smooth passage of the vehicle may be hindered. Specifically, normally, the driver of a vehicle stopped at a red light continues to visually recognize the construction traffic light, confirms the change to a green light, and starts the vehicle. However, if the driver starts to make extra observations and the visibility of the construction signal is insufficient, the change to the green signal may be overlooked and the vehicle may not be able to start.

Then, if the driver returns to the red light without noticing the change to the green light, the vehicle cannot depart until the next green light, and smooth passage is significantly hindered. In addition, if there is a vehicle behind, the delay in passage will spread to the following vehicle.

If the signal status is notified by a method that does not depend on the visual sense, such as by outputting a voice for alerting between the green signals, the driver can notice the change to the green signal even if he / she has some extra findings. However, if voice output is performed at each green light even if there is no vehicle traffic, it will impose an excessive burden on the surroundings, and it is used for construction work that is used to select a place including a quiet residential area. It is not realistic to execute at a traffic light.

From these facts, even if the driver overlooks the change to the green light, it is an important issue to promote the departure of the vehicle and to realize the smooth passage of the vehicle in the construction section.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to facilitate the passage of vehicles in a construction section.

In order to solve the above-mentioned problems and achieve the object, the present invention is a construction signal that is installed in a predetermined construction section of a road on which a vehicle travels and presents information relating to the right of passage of a vehicle passing through the construction section. A traffic guidance system having a management device for controlling the construction signal, a stop detection means for detecting a standby vehicle stopped at a predetermined standby position waiting for entry into the construction section, and a stop detection means for the construction. A display means provided on the traffic light that displays the presence or absence of the passage right based on the control from the management device, and the standby vehicle is notified that the display by the display means has been switched from no passage right to with the passage right. It is characterized by being provided with a notification means.

Further, in the above invention, the present invention is characterized in that the notification means notifies the standby vehicle by sound output.

Further, the present invention is characterized in that, in the above invention, the notification means is provided on the construction signal together with the display means.

Further, the present invention is characterized in that, in the above invention, the notification means notifies the waiting vehicle when the display by the display means is switched from having no right of way to having a right of way.

Further, in the above invention, in the above invention, when the notification means does not confirm the departure of the standby vehicle until a predetermined time elapses after the display by the display means is switched from no right of way to right of way. , The present invention is characterized in that the standby vehicle is notified.

Further, the present invention is characterized in that, in the above invention, the notification means notifies the operation terminal possessed by the guide when the departure of the standby vehicle is not confirmed even if the notification is given to the standby vehicle. To do.

Further, in the above invention, in the above invention, the management device has the right of way until the waiting vehicle stopped at the waiting position at the time when the display by the display means is switched from no right of way to having right of way. It is characterized by maintaining the state of existence.

Further, the present invention is a construction signal that is installed in a predetermined construction section of a road on which a vehicle travels and presents information relating to the right of way of a vehicle passing through the construction section, and indicates the presence or absence of the right of way. It is provided with a display means for displaying and a notification means for notifying a standby vehicle stopped at a predetermined standby position waiting for entry into the construction section that the display by the display means has been switched from having no right of way to having a right of way. It is characterized by that.

Further, the present invention is a construction signal installed in a predetermined construction section of a road on which a vehicle travels and presents information relating to the right of passage of a vehicle passing through the construction section, and a management device for controlling the construction signal. It is a traffic guidance method in a traffic guidance system having the above, in which a stop detection step of detecting a standby vehicle stopped at a predetermined standby position waiting for entry into the construction section, and a construction signal from the management device. A switching step for switching the display related to the traffic right from no traffic right to with the traffic right based on the control, and a notification to notify the standby vehicle that the display related to the traffic right has been switched from no traffic right to with the traffic right. It is characterized by including steps.

According to the present invention, it is possible to facilitate the passage of vehicles in the construction section.

FIG. 1 is an explanatory diagram for explaining the concept of the traffic guidance system according to the present embodiment. FIG. 2 is a diagram showing an external configuration of the construction traffic light shown in FIG. FIG. 3 is a functional block diagram showing an internal configuration of the control unit shown in FIG. FIG. 4 is a functional block diagram showing the configuration of the stop sensor shown in FIG. FIG. 5 is a functional block diagram showing the configuration of the passage detection sensor shown in FIG. FIG. 6 is a functional block diagram showing the configuration of the server device shown in FIG. FIG. 7 is a flowchart showing a processing procedure of a construction signal. FIG. 8 is a flowchart showing a processing procedure of the server device. FIG. 9 is a flowchart showing a modified example of the processing procedure of the construction signal.

Hereinafter, preferred embodiments of the traffic guidance system, construction traffic light, and traffic guidance method according to the present invention will be described in detail with reference to the accompanying drawings.

<Concept of traffic guidance system according to the example>
First, the concept of the traffic guidance system according to this embodiment will be described. FIG. 1 is an explanatory diagram for explaining the concept of the traffic guidance system according to the present embodiment. Here, road construction is carried out in the illustrated construction section of a road consisting of two lanes with one lane on each side, and construction signals 10a and 10b (hereinafter collectively referred to as "construction signals 10") are performed at both ends of this construction section. , The stop sensors 20a and 20b (hereinafter collectively referred to as "stop sensor 20") at the front end of the stop line, and the passage detection sensors 30a and 30b (hereinafter collectively referred to as "passage detection sensor 30") at both ends inside the construction section. ) Will be installed. Further, it is assumed that the traffic guide possesses the operation terminal 50. Although the upper lane of the road shown in FIG. 1 is defined as the up lane and the lower lane as the down lane, other terms may be used.

The construction signal 10 shown in FIG. 1 is a signal that presents information relating to the right of way of a vehicle passing through the construction section. Similar to the traffic light installed at the intersection, the construction signal 10 has a green circle display (hereinafter, simply referred to as "green signal") or a red circle display (hereinafter, simply referred to as "red light"). If it is a green traffic light, it means that the vehicle can pass through the construction section, and if it is a red traffic light, it means that the vehicle cannot pass through. Means. As a result, the vehicle trying to pass through the construction section will pass through the construction section according to the green signal presented on the construction signal 10, or will stop at the stop line in front of the construction section according to the red light. For convenience of explanation, the case where the yellow circle is displayed is omitted here, but in the case of the yellow circle display (yellow light), the vehicle in the standby state cannot safely stop at the stop line. As a condition, pass through the construction section while paying attention to the surrounding traffic.

Further, the construction signal 10, the stop sensor 20, the passage detection sensor 30, and the operation terminal 50 provided around the construction section are configured to be able to communicate with the server device 40. In this embodiment, it is assumed that the construction signal 10, the stop sensor 20, the passage detection sensor 30, and the operation terminal 50 are capable of wireless communication with the server device 40. The server device 40 is a device that controls the construction signals 10 provided at both ends of the construction section.

Here, some conventional traffic guidance systems are provided with a construction signal 10 and a server device 40 as in the present embodiment, but the conventional technology is careful of vehicles that do not notice the change in the state of the signal. Since it cannot be aroused, some vehicles may not depart even though it is a green light, which is problematic in terms of smooth traffic guidance.

Therefore, in the traffic guidance system according to the present embodiment, voice output for promoting departure is performed for a vehicle that does not notice the green signal displayed by the construction signal 10. In FIG. 1, the construction traffic light 10a displays a green signal and the construction traffic light 10b displays a red light. Then, even though the construction signal 10a became a green signal, the construction signal 10a was "blue" ("blue" means a green signal) for a vehicle that remained stopped at the stop line. The audio is output.

After the construction signal 10 displays the green signal, the server device 40 confirms the passage status of the vehicle in the construction section by using the passage detection sensor 30. As a result, when traffic guidance is performed using the construction signal 10, the stop sensor 20, and the passage detection sensor 30 provided in the construction section, the vehicle that does not notice the green signal is urged to depart and the passing status of the departed vehicle is confirmed. By doing so, it becomes possible to guide the vehicle smoothly.

<Exterior configuration of construction signal 10>
Next, the appearance configuration of the construction signal 10 shown in FIG. 1 will be described. FIG. 2 is a diagram showing an external configuration of the construction signal 10 shown in FIG. As shown in the figure, the construction signal 10 has a display unit 11, an audio output unit 12, and a control unit 13.

The display unit 11 is composed of a display device such as a liquid crystal panel. The green signal and the red signal are alternately displayed and controlled on the display unit 11. It is also possible to display messages such as "Please slow down", "Proceed", and "It's blue" when controlling the display of the green signal. Further, in the case of a green signal, a graph or the like showing the remaining time of the green signal can also be displayed.

The voice output unit 12 outputs a voice prompting the vehicle to start when the vehicle does not start even after the display control of the green signal on the display unit 11. As the voice prompting the vehicle to start, voices such as "It's blue" and "The signal has turned blue, so please start the car" may be used.

<Structure of control unit 13>
Next, the internal configuration of the control unit 13 shown in FIG. 2 will be described. FIG. 3 is a functional block diagram showing the internal configuration of the control unit 13 shown in FIG. As shown in the figure, the construction signal 10 is provided with a control unit 13, a communication I / F unit 14, and a storage unit 15. The communication I / F unit 14 is a communication interface unit for performing wireless communication between the server device 40 and the stop sensor 20 by using a well-known technology such as wireless LAN or LTE (Long Term Evolution) communication.

The storage unit 15 is a storage device including a hard disk device, a non-volatile memory, or the like, and the storage unit 15 stores setting data related to the audio output of the audio output unit 12. The setting data includes a notification grace threshold indicating the waiting time (for example, 10 seconds) from displaying the green signal to outputting the voice, voice data to be output, and the like.

The control unit 13 is a control unit that controls the entire construction signal 10, and includes a display control unit 13a and a voice control unit 13b. Actually, the functions of the display control unit 13a and the voice control unit 13b are exhibited by loading and executing the program corresponding to the display control unit 13a and the voice control unit 13b on the CPU (central processing unit). It will be.

The display control unit 13a selectively displays and controls the green signal or the red signal with respect to the display unit 11, and also controls the display of the message set in the storage unit 15. Here, in the first embodiment, switching between the green signal and the red signal on the display unit 11 is performed based on the switching instruction from the server device 40, but the switching instruction from the operation terminal 50 of the traffic guide. It can also be done based on.

The voice control unit 13b tells the voice output unit 12 whether or not the notification grace threshold set in the storage unit 15 and the detection result transmitted from the stop sensor 20 (whether or not the vehicle stopped at the stop line has started). ), Output control is performed for the audio data to be output.

Specifically, after displaying the green signal, the voice control unit 13b outputs voice data when a time equal to or longer than the notification grace threshold has passed without the vehicle stopped at the stop line departing. , Executes a notification prompting the driver of a vehicle stopped at the stop line to start the vehicle.

<Configuration of vehicle stop sensor 20>
Next, the configuration of the stop sensor 20 shown in FIG. 1 will be described. FIG. 4 is a functional block diagram showing the configuration of the stop sensor 20 shown in FIG. As shown in the figure, the vehicle stop sensor 20 includes an operation unit 21, a display unit 22, a communication I / F unit 23, a sensor unit 24, and a control unit 25.

The operation unit 21 is an operation device such as a button and a liquid crystal touch panel, and the display unit 22 is a display device such as an LED or a liquid crystal panel. The communication I / F unit 23 is a communication interface unit for performing wireless communication between the construction signal 10 and the server device 40 by using a well-known technology such as wireless LAN or LTE (Long Term Evolution) communication. The sensor unit 24 is a device that irradiates the road in front of the stop line with a laser beam, detects the reflected light, and measures the distance to the object to be reflected.

The control unit 25 is a control unit that performs overall control of the stop sensor 20, and has a stop / departure determination unit 25a. In reality, the function of the stop / departure determination unit 25a is exhibited by loading and executing the program corresponding to the stop / departure determination unit 25a on the CPU.

The stop / departure determination unit 25a is a processing unit that determines whether or not there is a vehicle stopped at the stop line based on the change in the distance to the object detected by the sensor unit 24. For example, when the vehicle is not stopped, the laser beam is reflected on the road and returned, but when the vehicle is stopped, it is reflected by the vehicle, so that the measurement result changes. The stop / departure determination unit 25a detects a change in the measurement result, determines whether the vehicle has stopped or departed, and transmits the determination result to the server device 40 and the construction signal 10.

<Configuration of passage detection sensor 30>
Next, the configuration of the passage detection sensor 30 shown in FIG. 1 will be described. FIG. 5 is a functional block diagram showing the configuration of the passage detection sensor 30 shown in FIG. As shown in the figure, the passage detection sensor 30 includes an operation unit 31, a display unit 32, a communication I / F unit 33, a sensor unit 34, and a control unit 35.

The operation unit 31 is an operation device such as a button and a liquid crystal touch panel, and the display unit 32 is a display device such as an LED or a liquid crystal panel. The communication I / F unit 33 is a communication interface unit for performing wireless communication with the server device 40 by using a well-known technology such as wireless LAN or LTE (Long Term Evolution) communication. The sensor unit 34 is a device that irradiates a road in a construction section with a laser beam, detects the reflected light, and measures the distance to the reflected object and the moving direction of the reflected object.

The control unit 35 is a control unit that performs overall control of the passage detection sensor 30, and has a passage determination unit 35a. Actually, the function of the passage determination unit 35a is exhibited by loading and executing the program corresponding to the passage determination unit 35a on the CPU.

The passage determination unit 35a is a processing unit that determines the presence or absence of a vehicle passing through the construction section and the movement direction based on the change in the distance and the movement direction from the reflection target object detected by the sensor unit 34. For example, when the vehicle does not pass, the laser beam is reflected on the road and returned, but when the vehicle passes, it is reflected by the vehicle and the measurement result changes. The passage determination unit 35a detects a change in the measurement result, determines the presence / absence of a passing vehicle and the passage direction, and transmits the determination result to the server device 40.

<Configuration of server device 40>
Next, the configuration of the server device 40 shown in FIG. 1 will be described. FIG. 6 is a functional block diagram showing the configuration of the server device 40 shown in FIG. As shown in the figure, the server device 40 includes an operation unit 41, a display unit 42, a communication I / F unit 43, a storage unit 44, and a control unit 45.

The operation unit 41 is an input device such as a keyboard and a mouse, and the display unit 42 is a display device such as a liquid crystal panel or a CRT. The communication I / F unit 43 is a communication interface unit for performing wireless communication with a construction signal 10 or the like using a well-known technology such as wireless LAN or LTE (Long Term Evolution) communication. The storage unit 44 is a storage device including a hard disk device, a non-volatile memory, or the like, and stores data or the like related to a signal switching time. Specifically, the storage unit 44 stores the time for continuing the green signal as the green signal duration.

The control unit 45 is a control unit that performs overall control of the server device 40, and includes a vehicle state determination unit 45a and a signal switching instruction unit 45b. Actually, the functions of the vehicle state determination unit 45a and the signal switching instruction unit 45b are exhibited by loading and executing the program corresponding to the vehicle state determination unit 45a and the signal switching instruction unit 45b on the CPU. become.

The vehicle condition determination unit 45a is a processing unit that determines the condition of the vehicle related to the passage of the construction section. Specifically, the vehicle state determination unit 45a determines the presence / absence of a standby vehicle in each lane and the departure of the standby vehicle based on the output from the stop sensor 20. If the output from the vehicle stop sensor 20 indicates that the vehicle is stopped, the vehicle condition determination unit 45a determines that there is a waiting vehicle in the corresponding lane. Here, what is indicated by the output of the stop sensor 20 is a vehicle stopped at the stop line, that is, a vehicle located at the head of the waiting vehicles waiting for a signal. Further, if the output of the stop sensor 20 indicates the absence of the vehicle after switching the lane determined to have the waiting vehicle to the green signal, the vehicle state determination unit 45a determines that the leading waiting vehicle has departed.

Further, the vehicle condition determination unit 45a calculates the number of vehicles located in the construction section as the number of vehicles in the section based on the output from the passage detection sensor 30. Specifically, the vehicle condition determination unit 45a adds 1 to the number of vehicles in the section when a vehicle in the direction of entering the construction section passes, and when a vehicle in the direction of leaving the construction section passes. , The number of vehicles in the section is subtracted by 1.

The signal switching instruction unit 45b is a processing unit that controls the right of way in the construction section by transmitting a signal switching instruction to the construction signal 10 to switch the signal display. The signal switching instruction unit 45b displays a red light on all the construction traffic lights 10 as an initial state.

If any of the lanes has a standby vehicle in the initial state, the signal switching instruction unit 45b transmits a green signal switching instruction to the corresponding construction signal 10 to switch from the red signal to the green signal. Let me. After switching to the green signal, the construction signal 10 transmits a red signal switching instruction when the green signal duration has elapsed, so that the red signal is switched to the green signal. After that, it waits for the number of vehicles in the section to become "0", and when the number of vehicles in the section becomes "0", the other construction signal 10 can be switched to the green signal.

<Explanation of processing>
Next, the processing procedure of the construction signal 10 will be described. FIG. 7 is a flowchart showing a processing procedure of the construction signal 10 shown in FIGS. 2 and 3. The display control unit 13a of the construction traffic light 10 displays a red light in the initial state (step S101).

The display control unit 13a determines whether or not a green signal switching instruction has been received from the server device 40 (step S102), and if it has not received the green signal switching instruction (step S102; No), displays a red signal. Continue (step S101).

When the display control unit 13a receives the green signal switching instruction (step S102; Yes), the display control unit 13a turns off the red signal and displays the green signal (step S103). When the display of the green signal is started, the voice control unit 13b starts the time counting of the departure waiting timer T1 (step S104).

The voice control unit 13b determines whether or not the departure of the leading standby vehicle has been confirmed (step S105). Specifically, if the output of the stop sensor 20 indicates that the vehicle is stopped at the time of switching to the green signal, and after switching to the green signal, the output of the stop sensor 20 indicates the absence of the vehicle, the head It means that the departure of the waiting vehicle has been confirmed.

If the departure of the first waiting vehicle is not confirmed (step S105; No), the voice control unit 13b determines whether or not the value of the departure waiting timer T1 is equal to or greater than the notification grace threshold value (step S106). The notification grace threshold is shorter than the green signal duration. If the value of the departure waiting timer T1 is less than the notification grace threshold value (step S106; No), the voice control unit 13b shifts to step S105.

When the value of the departure waiting timer T1 becomes equal to or higher than the notification grace threshold value (step S106; Yes), the voice control unit 13b performs voice notification to output a voice prompting the first waiting vehicle to start (step S107). ).

After step S107, or when confirming the departure of the leading waiting vehicle (step S105; Yes), the display control unit 13a determines whether or not a red signal switching instruction has been received from the server device 40 (step S108). If the red signal switching instruction has not been received (step S108; No), the display of the green signal is continued and the process of step S108 is repeated.

When the display control unit 13a receives the red signal switching instruction (step S108; Yes), the display control unit 13a erases the green signal and displays the red signal (step S109), and ends the process.

FIG. 8 is a flowchart showing a processing procedure of the server device 40. First, the signal switching instruction unit 45b of the server device 40 displays a red light on all the construction traffic lights 10 as an initial state (step S201).

The vehicle state determination unit 45a determines whether or not any lane has a standby vehicle (step S202). If there is no waiting vehicle in any of the lanes (step S202; No), the vehicle state determination unit 45a repeats step S202.

If any of the lanes has a standby vehicle (step S202; Yes), the signal switching instruction unit 45b selects the construction signal 10 to be controlled (step S203). The construction signal 10 to be controlled is selected from the construction signals 10 in the lane with a standby vehicle. Therefore, if any of the lanes has a standby vehicle first, the construction signal 10 in that lane is selected as the control target. If two lanes have standby vehicles at the same time, the construction signal 10 to be controlled may be selected by random selection or the like.

The signal switching instruction unit 45b transmits a green signal switching instruction to the construction signal 10 selected as the control target (step S204), causes the red signal to be switched to the green signal, and measures the time by the green signal continuation timer T2. Start (step S205). Further, the vehicle condition determination unit 45a starts calculating the number of vehicles in the section (step S206).

The signal switching instruction unit 45b determines whether or not the value of the green signal continuation timer T2 is equal to or longer than the green signal duration (step S207), and if the value of the green signal continuation timer T2 is less than the green signal duration (step S207). Step S207; No) and step S207 are repeated.

When the value of the green signal continuation timer T2 becomes equal to or longer than the green signal duration (step S207; Yes), the signal switching instruction unit 45b transmits a red signal switching instruction to the construction signal 10 to be controlled (step S208). ).

After that, the signal switching instruction unit 45b determines whether or not the number of vehicles in the section is "0" (step S209), and if the number of vehicles in the section is not "0" (step S209; No), step S209. repeat.

When the number of vehicles in the section becomes "0" (step S209; Yes), the signal switching instruction unit 45b determines whether or not there is a standby vehicle at another construction signal 10 that is not the control target. (Step S210). If there is a standby vehicle in the other construction signal 10 (step S210; Yes), the process proceeds to step S203, and the construction signal 10 to be controlled is selected.

If there is no standby vehicle in the other construction signal 10 (step S210; No), the process ends. At this time, all the construction traffic lights 10 are in the initial state of displaying the red light, and the process from step S201 can be repeated.

Note that FIG. 8 shows a case where the standby vehicle is detected and the construction signal 10 in the lane in which the standby vehicle is generated is switched to the green signal, but the construction signal 10 in two lanes is alternately alternated regardless of the presence or absence of the vehicle. It may be configured to switch to a green signal. In this case, the processes from step S203 to step S209 may be repeated and executed.

It is also possible to control the green light to continue until the leading waiting vehicle departs. In this case, after the green signal switching instruction is transmitted, when the departure of the leading standby vehicle is indicated by the output of the stop sensor 20, the time counting of the green signal continuation timer T2 may be started.

Next, a modified example of the operation of the construction signal 10 will be described. FIG. 7 shows a case where the voice is output when the elapsed time exceeds the notification grace threshold after switching to the green signal, but it is also possible to output the voice at the time of switching to the green signal. Further, the voice output may be continued until the leading standby vehicle departs. It is also possible to output an alarm to the operation terminal 50 of the traffic guide when the leading standby vehicle does not depart even though the departure is prompted by voice output.

FIG. 9 is a flowchart showing a modified example of the processing procedure of the construction signal 10. In FIG. 9, the display control unit 13a of the construction traffic light 10 displays a red light in the initial state (step S301).

The display control unit 13a determines whether or not a green signal switching instruction has been received from the server device 40 (step S302), and if it has not received the green signal switching instruction (step S302; No), displays a red signal. Continue (step S301).

When the display control unit 13a receives the green signal switching instruction (step S302; Yes), the display control unit 13a erases the red signal and displays the green signal (step S303). When the display of the green signal is started, the voice control unit 13b starts the time counting of the departure waiting timer T1 (step S304).

In addition, the voice control unit 13b starts voice notification that outputs a voice prompting the leading standby vehicle to depart (step S305). After that, the voice control unit 13b determines whether or not the departure of the leading standby vehicle has been confirmed (step S306). Specifically, if the output of the stop sensor 20 indicates that the vehicle is stopped at the time of switching to the green signal, and after switching to the green signal, the output of the stop sensor 20 indicates the absence of the vehicle, the head It means that the departure of the waiting vehicle has been confirmed. If the departure of the first waiting vehicle is confirmed (step S306; Yes), the voice control unit 13b ends the voice notification (step S309).

If the departure of the first waiting vehicle is not confirmed (step S306; No), the voice control unit 13b determines whether or not the value of the departure waiting timer T1 is equal to or greater than the warning grace threshold value (step S307). The alarm grace threshold is shorter than the green light duration. If the value of the departure waiting timer T1 is less than the notification grace threshold value (step S307; No), the voice control unit 13b shifts to step S306.

When the value of the departure waiting timer T1 becomes equal to or higher than the warning grace threshold value (step S307; Yes), the voice control unit 13b outputs an alarm to the operation terminal 50 of the traffic guide (step S308).

After step S308 or step S309, the display control unit 13a determines whether or not the red signal switching instruction has been received from the server device 40 (step S310), and if the red signal switching instruction has not been received (step S310; No), the display of the green signal is continued, and the process of step S310 is repeated.

When the display control unit 13a receives the red signal switching instruction (step S310; Yes), the display control unit 13a erases the green signal and displays the red signal (step S311), and ends the process.

As described above, according to the present embodiment, the stop sensor 20 detects a standby vehicle stopped at a predetermined standby position waiting for entry into the construction section, and the display unit 11 provided on the construction signal 10 displays. The presence or absence of the right of way is displayed based on the control from the server device 40 which is the management device, and the standby vehicle is notified that the display has changed from no right of way (red light) to with right of way (green light). With such a configuration, even if the driver overlooks the change to the green light, it is possible to encourage the vehicle to start, and the smooth passage of the vehicle in the construction section is realized.

In this embodiment, after the display is switched from no right of way to right of way, if the departure of the waiting vehicle is not confirmed until a predetermined time elapses, the description will be centered on the configuration of notifying the waiting vehicle. However, when the display changes from no right of way to right of way, it is possible to notify the waiting vehicle.

Further, according to the present embodiment, when the departure of the waiting vehicle is not confirmed even if the notification is given to the waiting vehicle, it is possible to give a notification such as an alarm to the operation terminal 50 possessed by the guide.

Further, according to the present embodiment, the server device 40 maintains the state of having the right of way until the waiting vehicle stopped at the standby position at the time when the display is switched from having no right of way to having the right of way. Can be done.

In the present embodiment, the case where the voice output is used for the notification for prompting the departure has been described as an example, but the present invention is not limited to this, and the notification for prompting the departure can be performed by any method. it can. For example, a sound other than voice such as an alarm sound may be used, or light such as a flash or a revolving light may be used. Further, the notification may be requested by communicating with the standby vehicle.

Further, in the present embodiment, the case where the number of vehicles entering the construction section and the number of vehicles leaving the construction section are calculated by using the passage detection sensor 30 installed in the construction section, but the present invention is limited to this. The number of vehicles entering the construction section by issuing an electronic ticket at the entrance of the construction section using road-to-vehicle communication technology such as ETC (registered trademark) and collating the electronic ticket at the exit. It is also possible to calculate the number of vehicles leaving the construction section.

Further, in the present embodiment, the case where the present invention is applied to a two-lane road consisting of one up lane and one down lane is shown, but the present invention is not limited to this, and is applied to a three-way junction, a branch road, or the like. You can also do it. In this case, three or more construction signals 10, a stop sensor 20, and a passage detection sensor 30 are installed, but the same processing as in this embodiment can be performed.

In addition, each configuration shown in this embodiment is a schematic function, and does not necessarily have to be physically shown. That is, the form of distribution / integration of each device is not limited to the one shown in the figure, and all or part of the device is functionally or physically distributed / integrated in an arbitrary unit according to various loads and usage conditions. Can be configured.

For example, the voice output unit may be provided not in the construction signal 10 but in the stop sensor 20, or a device for voice output may be separately arranged.

As described above, the traffic guidance system, the construction signal, and the traffic guidance method according to the present invention are suitable for facilitating the passage of vehicles in the construction section.

10, 10a, 10b Construction signal 11, 22, 32, 42 Display unit 12 Audio output unit 13, 25, 35 Control unit 13a Display control unit 13b Voice control unit 14, 23, 33, 43 Communication I / F unit 15, 44 Storage unit 20, 20a, 20b Stop sensor 21, 31, 41 Operation unit 24, 34 Sensor unit 25a Stop departure determination unit 30, 30a, 30b Passage detection sensor 35a Passage determination unit 40 Management server 45a Vehicle condition determination unit 45b Signal switching Indicator 50 Operation terminal

Claims (9)

A traffic guidance system that is installed in a predetermined construction section of a road on which a vehicle travels and has a construction signal that presents information related to the right of way of a vehicle passing through the construction section and a management device that controls the construction signal. And
A stop detection means for detecting a standby vehicle stopped at a predetermined standby position waiting for entry into the construction section, and a stop detection means.
A display means provided on the construction signal and displaying the presence or absence of the right of way based on control from the management device.
A traffic guidance system including a notification means for notifying the standby vehicle that the display by the display means has been switched from having no right of way to having a right of way. The traffic guidance system according to claim 1, wherein the notification means notifies the standby vehicle by outputting sound. The traffic guidance system according to claim 1 or 2, wherein the notification means is provided on the construction signal together with the display means. The traffic guidance according to any one of claims 1 to 3, wherein the notification means notifies the waiting vehicle when the display by the display means is switched from having no right of way to having a right of way. system. The notification means is characterized in that, after the display by the display means is switched from no right of way to with right of way, when the departure of the waiting vehicle is not confirmed until a predetermined time elapses, the notification means is given to the waiting vehicle. The traffic guidance system according to any one of claims 1 to 3. One of claims 1 to 5, wherein the notification means notifies an operation terminal possessed by a guide when the departure of the standby vehicle is not confirmed even if the standby vehicle is notified. Traffic guidance system. The management device is characterized in that the state of having the right of way is maintained until the waiting vehicle stopped at the waiting position departs when the display by the display means is switched from having no right of way to having the right of way. A traffic guidance system according to any one of claims 1 to 6. A construction signal that is installed in a predetermined construction section of the road on which a vehicle travels and presents information related to the right of way of a vehicle passing through the construction section.
A display means for displaying the presence or absence of the right of way and
It is characterized by being provided with a notification means for notifying a standby vehicle stopped at a predetermined standby position waiting for entry into the construction section that the display by the display means has been switched from having no right of way to having a right of way. Traffic light for construction. A traffic guidance system that is installed in a predetermined construction section of a road on which a vehicle travels and has a construction signal that presents information related to the right of way of a vehicle passing through the construction section and a management device that controls the construction signal. It is a traffic guidance method in
A stop detection step that detects a waiting vehicle that has stopped at a predetermined standby position that waits for entry into the construction section, and a stop detection step.
A switching step in which the construction signal switches from no right of way to with right of way based on control from the management device, and a display related to the right of way.
A traffic guidance method comprising a notification step of notifying the standby vehicle that the display relating to the right of way has changed from no right of way to having right of way.

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