JP2022127701A - Signal information output device, signal information output method, and signal information output program - Google Patents

Abstract

To accurately estimate signal information indicating a timing of switching of a lamp color signal of a traffic light installed at a cross section where a recall request is made to a signal control device.SOLUTION: A storage unit stores a switching control pattern for switching a lamp color signal of a traffic light by a signal control device. A first detection unit detects a timing at which lighting of a specific lamp color signal of the traffic light was started as a first timing. A second detection unit detects a timing at which a recall display was started as a second timing with a display unit that performs recall display indicating that a recall request has been input into the signal control device. An estimation unit estimates signal information on the basis of the switching control pattern stored in the storage unit, the first timing detected by the first detection unit, and the second timing detected by the second detection unit.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a technique for outputting signal information indicating timing at which a light color signal of a traffic signal installed at an intersection is switched.

Conventionally, the light color signals (green, yellow, red, etc.) of traffic lights installed at intersections are switched by a signal control device. The signal control device switches the light color signal of the traffic light based on the set signal control parameter.

When a vehicle driver is traveling on an inflow road at an intersection and a little before reaching the intersection (for example, less than several seconds (about 3 seconds)), the light color of the traffic light is changed from green to yellow. In order to stop before the intersection, it may brake suddenly or accelerate suddenly to pass the intersection. Since such sudden braking or sudden acceleration increases the possibility of causing a traffic accident, the remaining time until the light color signal of the traffic light is switched is transmitted (output) as signal information to vehicles approaching the intersection. There was a signal information transmission device of (see, for example, Patent Document 1). By checking the signal information transmitted from the signal information transmitting device, the driver can drive the vehicle without applying sudden braking or sudden acceleration before the intersection.

JP 2012-233854 A

However, at an intersection where a push button box is installed so that a pedestrian can request a recall, the signal control device switches the light color signal of the traffic light according to the recall request. Specifically, in the push button box, the signal control device changes the green light of the traffic light in the direction in which the pedestrian crosses (the pedestrian's crossing direction) according to the timing when the pedestrian presses the button related to the recall request. Deciding when to start. Therefore, at an intersection where a recall request can be made, signal information must be estimated according to the timing at which the recall request is made.

When the signal control device determines the green signal start timing for the traffic signal in the pedestrian crossing direction, it also determines the light color signal switching timing for the traffic signal in the direction other than the pedestrian crossing direction.

The device described in Patent Document 1 does not have a configuration for estimating and outputting signal information of a traffic signal installed at an intersection where a recall request can be made.

Note that there are some intersections where a recall request is made by sensing the presence of a vehicle even at an intersection where no push-button box operated by pedestrians is installed. That is, the intersection at which the recall request is issued to the signal control device is not limited to the intersection where the push button box is installed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a technique capable of accurately estimating signal information indicating the timing at which the light color signal of a traffic signal installed at an intersection where a recall request is issued to a signal control device.

In order to achieve the above object, the signal information output device of the present invention is constructed as follows.

The signal information output device outputs signal control parameters set by the signal control device and signal information indicating the timing of switching the light color signal of the traffic signal according to the input recall request.

The storage unit stores a switching control pattern for switching the light color signal of the traffic signal by the signal control device. This switching control pattern is a pattern for switching the light color signal of the traffic signal according to the signal control parameter set by the signal control device and the input recall request.

The first detection unit detects the timing at which the lighting of the specific light color signal of the traffic light is started as the first timing. This specific light color signal is, for example, the start timing of the green light on the main road.

When the recall request is input to the signal control device, the second detection unit detects the timing at which the recall display is started in the display unit that displays the recall display to that effect as the second timing. The second timing corresponds to the timing at which the recall request is issued to the signal control device. The display unit may be a push-button box in which a pedestrian can perform a predetermined operation related to the recall request, such as an operation of pressing a push button, or a driver of a vehicle stopped at a red light may be notified of the recall. It may be a display device that notifies that a request is being made.

The estimation unit estimates signal information based on the switching control pattern stored in the storage unit, the first timing detected by the first detection unit, and the second timing detected by the second detection unit.

With this configuration, it is possible to accurately estimate the signal information indicating the timing at which the light color signal of the traffic signal installed at the intersection at which the recall request is issued to the signal control device. Therefore, the signal information can be properly provided to the driver of the vehicle traveling on the inflow road of the intersection where the recall request is made.

For example, the second detection unit may detect the second timing by detecting the start of power supply for the recall display to the display unit.

Further, the first detection unit may be configured to detect the first timing by detecting the start of power supply for a specific light color signal of a traffic light.

Further, if the display unit is configured to perform an operation waiting display indicating that during a period in which a predetermined operation related to the recall request is valid, the first detection unit supplies power for the operation waiting display to the display unit. may be configured to be performed by detecting the start of

According to the present invention, it is possible to accurately estimate the signal information indicating the timing at which the light color signal of the traffic signal installed at the intersection where the recall request is issued to the signal control device.

It is the schematic of the intersection where the signal information output device concerning this example is applied. It is a schematic diagram showing the connection relationship of a signal information output device, a signal control device, and a traffic light. Fig. 10 is a current ladder diagram of a traffic signal installed at an intersection; It is a block diagram which shows the structure of the principal part of a signal information output device. It is a block diagram which shows the structure of the principal part of a push button box. 3 is a block diagram showing the configuration of main parts of the signal connection box; FIG. It is a flow chart which shows operation of a signal information output device. FIG. 11 is a block diagram showing the configuration of main parts of a signal connection box according to Modification 1;

Embodiments of the present invention will be described below.

<1. Application example>
FIG. 1 is a schematic diagram of an intersection to which the signal information output device according to this example is applied. FIG. 2 is a schematic diagram showing the connection relationship of the signal information output device, the signal control device, the push button box, the signal junction box, and the traffic signal at the intersection shown in FIG. Also, in the following description, time and timing indicate one point in time, and time indicates the length between two different points in time.

The intersection shown in FIG. 1 is a crossroad where a main road and a secondary road intersect. In FIG. 1, the road on which the vehicle 100 (100a, 100b) travels in the horizontal direction is the main road, and the road on which the vehicle 100 (100c, 100d) travels in the vertical direction is the secondary road. Signals 6 and 7 are installed for each inflow road of the intersection. In this example, traffic lights 6 (6a, 6b) display indications for vehicles 100a, 100b entering the intersection from the left and right in FIG. In addition, the traffic lights 7 (7a, 7b) display indications for the vehicles 100c, 100d entering the intersection from above and below in FIG.

In this example, the light color signals of the traffic lights 6a, 6b, 7a, and 7b installed at the intersection are three colors of green, yellow, and red. A green light is a state in which a blue colored light source is lit, a yellow light is a state in which a yellow colored light source is lit, and a red light is a state in which a red colored light source is lit. is.

In this example, a signal information output device 1, a signal control device 2, a push button box 3, and traffic signals 6 and 7 are connected to a signal connection box 4, as shown in FIG. In other words, the signal information output device 1, the signal control device 2, the push button box 3, and the traffic signals 6 and 7 are electrically connected via the signal junction box 4. FIG.

The signal control device 2 controls switching of the light color signals of the traffic signals 6 and 7 installed at the intersection. The signal control device 2 and the traffic lights 6 and 7 are existing devices. In this example, the signal control device 2 synchronizes the light color signals of the traffic lights 6a and 6b. The signal control device 2 also synchronizes the light color signals of the traffic signals 7a and 7b. That is, the traffic signals 6a and 6b are switched to the same lamp color signal at the same timing by the signal control device 2. FIG. Also, the traffic signals 7a and 7b are switched to the same lamp color signal at the same timing by the signal control device 2. FIG.

The pushbutton box 3 issues a recall request to the signal control device 2 . In this example, a recall request can be made to request that the traffic light 7 on the secondary road side be switched to green. The push button box 3 is provided with push buttons to be operated when making a recall request. Further, the push button box 3 is provided with a display section. In this display unit, a message (e.g., "Please wait for a while") notifying that a recall request has already been issued to the signal control device 2 is displayed (corresponding to the recall display referred to in the present invention). done. This display unit also displays a message (for example, "Please press the button.") notifying that the signal control device 2 is waiting for a recall request operation (the operation related to the recall request is enabled). (corresponding to the operation waiting display referred to in the present invention) is performed. In the following description, a message notifying that a recall request has already been issued to the signal control device 2 will be referred to as a request completion notification. A message notifying that a recall request operation to the signal control device 2 is awaited is called an unrequested notification. This push button box 3 corresponds to the display unit referred to in the present invention.

In this example, when the traffic light 6 on the main road is green, the signal information output device 1 estimates the remaining green time until the green light ends. The signal information output device 1 outputs the estimated remaining green time as signal information.

FIG. 3 is a diagram showing the presenting ladder steps of a traffic signal by the signal control device of this example. The signal control device 2 switches the light color signals of the traffic lights 6 and 7 in the order of steps φ1 to φ7. The signal control device 2 repeats steps φ1 to φ7 shown in FIG.

Steps φ1 and φ2 are steps in which the signal 6 is green and the signal 7 is red. The signal control device 2 changes the time t1 of step φ1 according to the recall request. Specifically, when the timing of the recall request is before the elapsed time from the start of step φ1 reaches a predetermined minimum time t1min, the signal control device 2 sets the time t1 of step φ1. is controlled to this minimum time t1min. If there is no recall request before the elapsed time from the start of step φ1 reaches a predetermined minimum time t1min, signal control device 2 continues step φ1 until a recall request is made. Step φ2 is a preset fixed time t2.

Step φ3 is a step in which the signal 6 is yellow and the signal 7 is red. Step φ3 is a preset fixed time t3. Step φ4 is a step in which the traffic light 6 is a red light and the traffic light 7 is a red light. Step φ4 is a preset fixed time t4. Step φ5 is a step in which the signal 6 is red and the signal 7 is green. Step φ5 is a preset fixed time t5. Step φ6 is a step in which the signal 6 is red and the signal 7 is yellow. Step φ6 is a preset fixed time t6. Step φ7 is a step in which the traffic light 6 is a red light and the traffic light 7 is a red light. Step φ7 is a preset fixed time t7.

As is well known, the signal control device 2 supplies power to the traffic signals 6 and 7 through the signal connection box 4 to turn on the light color signal. The signal information output device 1 of this example detects the start of supply of power for turning on the green signal to the traffic signal 6 by the signal control device 2, so that the green start timing of the traffic signal 6 (that is, the stairs step shown in FIG. 3 φ1 start timing) is detected. For example, in the signal information output device 1, a value (green detection level) corresponding to the current value detected by the current sensor and flowing in the power supply line supplying the power for the signal control device 2 to turn on the green signal to the traffic light 6 is entered.

Further, the signal control device 2 supplies power to the push button box 3 via the signal connection box 4 to display the requested notification and the unrequested notification. When the recall request is made, the signal control device 2 supplies power to the push button box 3 for displaying the request notification. The signal control device 2 does not supply power for displaying an unrequested notification to the push button box 3 while supplying power for displaying the requested notification. Further, the signal control device 2 does not supply power for displaying the requested notification when the push button box 3 is being supplied with power for displaying the not-yet-requested notification.

It should be noted that the signal control device 2 may have a period of time during which the push button box 3 is not supplied with power for displaying the requested notification and power for displaying the unrequested notification.

In the signal information output device 1 of this example, when the signal control device 2 detects the start of supply of power for lighting the request notification to the push button box 3, the push button box 3 is operated to request a recall. The timing at which the recall request is issued to the signal control device 2 is detected.

A recall request indicating that a push button in the push button box 3 has been operated is input to the signal control device 2 via the signal connection box 4 .

In the signal information output device 1 of this example, the signal control device 2 stores a control pattern for switching the light color signals of the traffic lights 6 and 7 (in this example, the current step steps shown in FIG. 3). The signal information output device 1 of this example detects the start timing of the green light of the traffic light 6 and the display start timing of the requested notification in the push button box 3, and when the traffic light 6 is green, until the green light ends. Estimate the residual green time of The signal information output device 1 outputs the estimated remaining green time as signal information.

Therefore, the signal information output device 1 of this example can accurately estimate the signal information indicating the timing at which the light color signal of the traffic signal 6 installed at the intersection where the recall request is made to the signal control device 2 is switched.

Further, the signal information output device 1 of this example can utilize the existing signal control device 2 and traffic lights 6 and 7 as they are. That is, when using the signal information output device 1, it is not necessary to replace the existing signal control device 2 and the traffic signals 6 and 7. FIG.

<2. Configuration example>
FIG. 4 is a block diagram showing the configuration of the main part of the signal information output device according to this example. The signal information output device 1 includes a control unit 11 , an input section 12 , a timer section 13 , a storage section 14 and an output section 15 .

The control unit 11 controls the operation of each section of the signal information output device 1 main body. The control unit 11 also has a first detection section 21 , a second detection section 22 and an estimation section 23 . Details of the first detection unit 21, the second detection unit 22, and the estimation unit 23 will be described later.

In this example, the input unit 12 stores a value (green detection level) is entered. The current sensor is arranged so as to sandwich the power supply line that supplies power for the signal control device 2 to turn on the green signal to the traffic light 6, and is a current probe that detects and outputs the magnitude of the current flowing through this power supply line. is. Further, the input unit 12 receives a value (display detection level) corresponding to the power supply voltage supplied from the signal control device 2 to the pushbutton box 3 for displaying the request completion notification.

The clock unit 13 clocks the current time. Further, the clock unit 13 preferably has a function of periodically receiving standard radio waves and setting the time, but it does not have to have this function.

Note that, if the clock unit 13 has a function of adjusting the time, it may be configured to adjust the time using time information or the like output from a GPS satellite or the like, not limited to the standard radio wave.

The storage unit 14 stores a control pattern for switching the light color signals of the traffic signals 6 and 7 by the signal control device 2 . That is, the storage unit 14 stores the control patterns shown in FIG. Further, when the signal control device 2 changes the control pattern for switching the light color signals of the traffic signals 6 and 7 according to the type of day and the time period, the storage unit 14 stores the A control pattern for switching the light color signals of traffic lights 6 and 7 is stored.

A transmitting device (not shown) such as a beacon or a wireless transmitter is connected to the output unit 15 . When the signal 6 is green, the output unit 15 outputs the time until the signal 6 changes to yellow (remaining green time) as signal information to the connected transmitting device. Notification of signal information to vehicles 100 (100a to 100d) is performed using this transmission device.

Next, the first detection section 21, the second detection section 22, and the estimation section 23 included in the control unit 11 will be described.

The first detection unit 21 receives a value (green detection level ), the first timing at which the traffic light 6 is switched from red to green is detected. The first timing is the timing when the traffic light 6 starts turning green, and is the timing when step φ1 in the control pattern shown in FIG. 3 starts.

The second detection unit 22 is based on a value (display detection level) input to the input unit 12 corresponding to the power supply voltage supplied by the signal control device 2 to the push button box 3 for displaying the request notification. , the second timing at which the pushbutton box 3 starts requesting notification.

The estimating unit 23 calculates a control pattern for switching the light color signals of the traffic lights 6 and 7 by the signal control device 2 stored in the storage unit 14, the first timing detected by the first detection unit, and the second timing detected by the second detection unit. 2 timing, the remaining green time of the traffic light 6 is estimated.

The control unit 11 of the signal information output device 1 is composed of a hardware CPU, memory, and other electronic circuits. The hardware CPU operates as a first detector 21, a second detector 22, and an estimator 23 when executing the signal information output program according to the present invention. The memory also has an area for developing the signal information output program according to the present invention and an area for temporarily storing data generated when the signal information output program is executed. The control unit 11 may be an LSI that integrates a hardware CPU, memory, and the like. Also, the hardware CPU is a computer that executes the signal information output method according to the present invention.

Here, the push button box 3 and the signal connection box 4 will be briefly explained. FIG. 5 is a block diagram showing the configuration of the main parts of the push button box.

The push button box 3 includes an input/output section 31, a push button 32, a first light emitting section 33, and a second light emitting section . The input/output unit 31 is a terminal block connected to the signal connection box 4 . The push button 32, the first light emitting section 33, and the second light emitting section 34 are electrically connected to this terminal block.

The push button 32 is a switch whose contact is open when it is not pressed and whose contact is closed when it is pressed.

The first light emitting unit 33 is a light source such as an LED, and emits light when power is supplied. When the first light emitting part 33 emits light, the push button box 3 displays the message "Please wait for a while."

The second light emitting unit 34 is a light source such as an LED, like the first light emitting unit 33, and emits light when power is supplied. When the second light-emitting part 34 emits light, the push button box 3 displays the message "Press the button."

FIG. 6 is a block diagram showing the configuration of the main parts of the signal connection box. The signal connection box 4 is a repeater that electrically connects the signal information output device 1, the signal control device 2, the push button box 3, and the traffic lights 6 and 7, as shown in FIG. The signal connection box 4 is also provided with a current sensor 41 and an A/D converter 42 . The current sensor 41 is connected to the signal control device 2 and arranged so as to sandwich a power supply line for supplying power for turning on the green signal to the traffic light 6 . In this example, the current sensor 41 is provided before the branched power supply line for the traffic signals 6a and 6b, but it may be arranged so as to sandwich the green power supply line for the branched traffic signal 6a. Current sensor 41 is connected to A/D converter 42 .

A power supply line for the first light emitting unit 33 is branched and connected to the A/D converter 42 .

The A/D converter 42 converts the detection output of the current sensor 41 and the voltage of the power supply line for the first light emitting unit 33 into digital values, and outputs the digital values to the signal information output device 1 . A digital value related to the detection output of the current sensor 41 is output to the signal information output device 1 as a green detection signal. A digital value applied to the voltage of the power supply line for the first light emitting unit 33 is output to the signal information output device 1 as a display detection level. The signal information output device 1 detects the start time of the green signal of the traffic signal 6 based on this green detection level. Further, the signal information output device 1 detects the time when the recall request is made to the signal control device 2 from this display detection signal.

<3. Operation example>
The operation of the signal information output device 1 of this example will be described below. FIG. 7 is a flow chart showing the operation of the signal information output device.

Assume that the traffic lights 6 (6a, 6b) are not green at this time. The signal information output device 1 waits for the green light to start at the traffic light 6 (s1). At s1, the first detection unit 21 waits for the blue detection level input to the input unit 12 to exceed the first set level.

The first detection unit 21 acquires the green start time at which the green light is started at the traffic light 6 (s2). When the green detection level input to the input unit 12 changes from less than the first set level to a value greater than the first set level, the first detection unit 21 resets the time clocked by the clock unit 13 to the traffic signal. 6 as the blue start time.

The signal information output device 1 determines the remaining green time (minimum remaining green time) and outputs the estimated remaining green time (s3, s4). The estimation unit 23 estimates the remaining green time in s3. At this time, the signal information output device 1 may or may not output the maximum remaining green time as unknown. When the control patterns of the traffic lights 6 and 7 are stored in the storage unit 14 by day type and time period, the estimation unit 23 calculates the remaining green time using the control pattern corresponding to the corresponding day type and time period. to estimate

As described above, the signal control device 2 determines that the timing of the recall request is before the elapsed time from the start of step φ1 (green start time acquired in s2) reaches the predetermined minimum time t1min. , the time t1 of step φ1 is controlled to this minimum time t1min. If there is no recall request before the elapsed time from the start of step φ1 reaches a predetermined minimum time t1min, signal control device 2 continues step φ1 until a recall request is made. That is, if there is no recall request before the elapsed time from the start of step φ1 reaches a predetermined minimum time t1min, the signal control device 2 controls the timing of the recall request to the end timing of step φ1. do.

Further, the signal information output device 1 detects when the display detection level input to the input unit 12 changes from less than the second set level to a value exceeding the second set level in the second detection unit 22. 2 is detected as the timing at which a recall request is made.

The signal information output device 1 determines whether or not the second detector 22 has already detected a recall request (s5), and returns to s1 if the recall request has already been detected. If the recall request is not detected by the second detector 22 at the time of s4, the signal information output device 1 waits for the recall request to be detected by the second detector 22 (s6).

In the signal information output device 1, when the second detection unit 22 detects the recall request in s6, the estimation unit 23 estimates the remaining green time (s7). The signal information output device 1 outputs the remaining green time estimated in s7 (s8), and returns to s1.

In s7, if the timing at which the second detection unit 22 detects the recall request has not reached the minimum time t1min of t1 from the start of step φ1, the estimation unit 23 calculates the remaining green time as
Remaining green time = (minimum time t1min - time from the start of step φ1 until the second detection unit 22 detects the recall request) + time t2 of step φ2
We estimate that Further, in s7, if the timing at which the second detection unit 22 detects the recall request has reached the minimum time t1min of t1 from the start of step φ1, the estimation unit 23 calculates the remaining green time as
Remaining green time=time t2 of step φ2
We estimate that

Thus, the signal information output device 1 of this example accurately estimates the signal information indicating the timing at which the light color signal of the traffic signal 6 installed at the intersection where the recall request is made to the signal control device 2 is switched. can do

The signal information output device 1 may be configured to repeatedly estimate the remaining green time for each set time and output the estimated remaining green time. Further, the signal information output device 1 may be configured to estimate and output the end time when the green light of the traffic light 6 ends. The signal information output device 1 may be configured to output the estimated remaining green time and the time at which the estimated remaining green time is paired, or may be configured to output the signal information in another form. good.

In the above example, the remaining green time of the traffic signal 6 on the main road side is output as signal information, but the remaining green time of the traffic signal 7 on the secondary road side may also be estimated and output as signal information. . Further, the signal information is not limited to the remaining green time, and may output the remaining yellow time and the remaining red time.

Further, in the above example, the signal information output device 1 may, if necessary, add a configuration for detecting the power supply to the traffic light 6 on the side of the main road for the yellow signal and the red signal. A configuration may be added to detect the power supply for the green, yellow, and red signals for the traffic light 7 in .

<4. Variation>
Next, a modification of the signal information output device will be described.

・Modification 1
In the above example, the start timing of the green light of the traffic light 6 is determined by detecting the power supply of the green light to the traffic light 6 on the main road side by the current sensor 41. The timing may be detected to predict when the signal 6 will turn green.

For example, the signal connection box 4 of Modification 1 has the configuration shown in FIG. In this example, the signal connection box 4 sends a digital value applied to the voltage of the power supply line to the second light emitting section 34 of the push button box 3 by the signal control device 2 as the green detection level for the signal information output device 1. Output. The signal junction box 4 of Modification 1 is not provided with the current sensor 41 described in the above example.

The display of the unrequested notification in the pushbutton box 3 is started at a predetermined timing. For example, the signal control device 2 causes the push button box 3 to start displaying the unrequested notification at the start timing of step φ1, the start timing of step φ6, or the start timing of step φ7 of the control pattern shown in FIG.

The signal information output device 1 of Modification 1 detects the timing of starting to display the unrequested notification in the pushbutton box 3 according to the input digital value applied to the voltage of the power supply line for the second light emitting unit 34 of the pushbutton box 3. to detect. The signal information output device 1 of Modification 1 predicts the start timing of the green light of the traffic light 6 based on the detected display start timing of the unrequested notification in the pushbutton box 3 .

Thus, the signal information output device 1 of Modification 1 can predict the start timing of the green light for the traffic signal 6 on the main road side without using the current sensor 41 .

・Modification 2
In the above example, the signal connection box 4 is provided with the A/D converter 42, but the A/D converter 42 may be provided in the signal information output device 1 or in the push button box 3. may

Branches for connecting the power supply line for the first light emitting unit 33 and the power supply line for the second light emitting unit 34 to the A/D converter 42 may be wired inside the signal junction box 4, Wiring may be performed inside the push button box 3 .

In other words, any connection may be used as long as it can input to the signal information output device 1 a signal capable of estimating the start timing of the green signal of the traffic light 6 and the timing at which the recall request is made to the signal control device 2. .

Moreover, the traffic lights 6 and 7 installed at the intersection may display a right turn arrow signal or the like as a light color signal. Further, the signal information output device 1 can output the signal information of the traffic signals 6 and 7 regardless of whether or not a pedestrian signal light is installed at the intersection.

Further, the signal information output device 1 is not limited to an intersection where a main road and a secondary road intersect. It can be applied even where there is no pedestrian crossing and there is a pedestrian crossing that crosses this main road.

The signal information output device 1 can also be applied to an intersection where a recall request is made to the signal control device 2 when detecting a vehicle 100 stopped at a red light on the secondary road side. In this case, the signal information output device 1 sends a recall request to the signal control device 2 by supplying power to a display device that notifies the driver of the vehicle 100 stopped at a red light that a recall request is being made. is performed.

It should be noted that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying constituent elements without departing from the scope of the present invention at the implementation stage. Also, various inventions can be formed by appropriate combinations of the plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, constituent elements of different embodiments may be combined as appropriate.

Furthermore, the correspondence relationship between the configuration according to the present invention and the configuration according to the above-described embodiment can be described as the following additional remarks.
<Appendix>
A signal information output device (1) for outputting signal control parameters set by the signal control device (2) and signal information indicating the timing for switching the light color signals of the traffic signals (6, 7) according to the input recall request. ) and
a storage unit (14) in which the signal control device (2) stores a switching control pattern for switching the light color signals of the traffic lights (6, 7);
a first detection unit (21) for detecting, as a first timing, a timing at which lighting of a specific light color signal of the traffic lights (6, 7) is started;
When the recall request is input to the signal control device (2), a display unit (3) that displays a recall display to that effect detects a timing at which the recall display is started as a second timing. a part (22);
Based on the switching control pattern stored in the storage unit (14), the first timing detected by the first detection unit (21), and the second timing detected by the second detection unit (22) and an estimation unit (23) for estimating the signal information.

Reference Signs List 1 Signal information output device 2 Signal control device 3 Push button box 4 Signal connection boxes 6, 7 (6a, 6b, 7a, 7b) Traffic light 11 Control unit 12 Input unit 13 Clock unit 14 Memory Unit 15 Output unit 21 First detection unit 22 Second detection unit 23 Estimation unit 31 Input/output unit 32 Button 33 First light emission unit 34 Second light emission unit 41 Current sensor 42 A/D Converter 100 (100a to 100d)...Vehicle

Claims (9)

A signal information output device for outputting signal control parameters set by a signal control device and signal information indicating timing for switching a light color signal of a traffic signal according to an input recall request,
a storage unit in which the signal control device stores a switching control pattern for switching a light color signal of the traffic light;
a first detection unit that detects a timing at which lighting of a specific light color signal of the traffic light is started as a first timing;
a second detection unit that, when the recall request is input to the signal control device, detects a timing at which the recall display is started as a second timing in a display unit that displays a recall display to that effect;
Estimation of estimating the signal information based on the switching control pattern stored in the storage unit, the first timing detected by the first detection unit, and the second timing detected by the second detection unit and a signal information output device. 2. The signal information output device according to claim 1, wherein said second detection unit detects said second timing by detecting a start of power supply for said recall display to said display unit. 3. The signal information output device according to claim 1, wherein said display unit outputs a recall request to said signal control device when a predetermined operation is performed. The signal information output device according to any one of claims 1 to 3, wherein the first detection unit detects the first timing by detecting the start of power supply for the specific light color signal of the traffic light. The display unit performs an operation wait display indicating that a predetermined operation related to the recall request is valid for a period of time, and
4. The signal information output device according to claim 3, wherein said first detection unit detects said first timing by detecting a start of power supply for said operation waiting display on said display unit. 6. The signal information output device according to claim 1, wherein said specific lamp color signal is a green signal. The signal information output device according to any one of claims 1 to 6, wherein when the traffic signal is green, the estimation unit estimates, as the signal information, a remaining green time until the green signal ends. A computer of a signal information output device that outputs signal control parameters set by the signal control device and signal information indicating the timing of switching the light color signal of the traffic signal according to the input recall request,
a first detection step of detecting a timing at which lighting of a specific light color signal of the traffic light is started as a first timing;
a second detection step of detecting, when the recall request is input to the signal control device, a timing at which the recall display is started as a second timing by a display unit that displays a recall display indicating the recall request;
A switching control pattern stored in a storage unit by which the signal control device switches the light color signal of the traffic light, the first timing detected by the first detection unit, and the second timing detected by the second detection unit and an estimator for estimating the signal information based on the signal information output method. To the computer of the signal information output device that outputs the signal control parameters set by the signal control device and the signal information indicating the timing of switching the light color signal of the traffic signal according to the input recall request,
a first detection step of detecting a timing at which lighting of a specific light color signal of the traffic light is started as a first timing;
a second detection step of detecting, when the recall request is input to the signal control device, a timing at which the recall display is started as a second timing by a display unit that displays a recall display indicating the recall request;
A switching control pattern stored in a storage unit by which the signal control device switches the light color signal of the traffic light, the first timing detected by the first detection unit, and the second timing detected by the second detection unit and an estimating unit that estimates the signal information based on the signal information output program.

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