JP5831094B2 - Traffic signal controller - Google Patents

Description

  The present invention relates to a traffic signal controller that sequentially switches the signal display of a plurality of signal lamps.

  The traffic signal controller switches the signal display of each signal lamp based on the step color information including the lamp color information that defines the lamp color of the signal display (step) of each signal lamp and the display time of each lamp color. And the traffic signal controller is provided with the step counter for performing the step operation which advances each step in order. In addition, the traffic signal controller has a function of performing a manual step to advance a step to the next step by a manual operation in order to maintain smooth traffic even in the event of an abnormality such as a failure (see Patent Document 1). .

JP 2003-331385 A

  However, the timing at which the person performs the manual stepping operation is determined depending on the judgment of the person who performs the manual operation. For this reason, the timing of switching the color of the signal lamp may be too early. For example, when a manual stepping operation is performed within a short period of time after the lamp color of the signal lamp is switched to a green signal, the green signal time becomes too short, which may cause traffic congestion. Moreover, the same situation also occurs with respect to signal lights for pedestrians, and there is a possibility that pedestrians cannot cross the pedestrian crossing.

  The present invention has been made in view of such circumstances, and provides a traffic signal controller capable of switching the signal display of a signal lamp at an appropriate timing even when a manual stepping operation is performed. With the goal.

  A traffic signal controller according to a first aspect of the present invention is the traffic signal controller for sequentially switching the signal display of a plurality of signal lamps for a plurality of roads intersecting at an intersection, wherein the minimum display time of the signal display of the plurality of signal lamps is A storage unit for storing step information to be displayed, an operation unit for receiving a manual stepping operation for switching the signal display, and a control unit for sequentially specifying the signal display of the plurality of signal lamps and controlling the stepping of the signal display When the designated signal display is a predetermined signal display, the control unit performs a manual stepping operation with the operation unit within the shortest display time of the signal display from the time of switching to the designated signal display. When the command is received, it is configured not to step to the next signal display in response to the manual stepping operation.

  The traffic signal controller according to a second aspect of the present invention is the traffic signal controller according to the first aspect, wherein, when the designated signal display is the predetermined signal display, the control unit displays the signal display from the time when the designated signal display is switched. When a manual step operation is accepted by the operation unit within the shortest display time, the signal is stepped to the next signal display when the shortest display time of the signal display has elapsed. .

  A traffic signal controller according to a third aspect of the present invention is the traffic signal controller according to the first aspect or the second aspect, wherein the control unit switches to the designated signal display when the designated signal display is the predetermined signal display. When a manual stepping operation is accepted by the operation unit after the shortest display time of the signal display has elapsed, it is configured to step to the next signal display according to the manual stepping operation. .

  The traffic signal controller according to a fourth aspect of the present invention is the traffic signal controller according to any one of the first to third aspects, wherein the predetermined signal display has a floor type of long floor.

  The traffic signal controller according to a fifth aspect of the present invention is the traffic signal controller according to any one of the first to fourth aspects of the invention, wherein the predetermined signal display is a green signal for a pedestrian signal lamp, and a signal lamp for a pedestrian. The signal display of the vehicle is a blue flashing signal, the signal display of the vehicle signal lamp is a blue signal, the signal display of the pedestrian signal lamp is a red signal, or the signal display of the vehicle signal lamp is a blue arrow signal It is characterized by.

  In the first invention, a storage unit that stores step information indicating the shortest display time of signal display of a plurality of signal lamps, an operation unit that receives a manual stepping operation for switching the signal display, and a plurality of signal lamps A control unit that sequentially designates the signal display and advances the signal display. When the designated signal display is a predetermined signal display, the control unit receives a manual stepping operation from the operation unit within the shortest display time of the signal display from the time when the designated signal display is switched. Control is performed so as not to advance to the next signal display in accordance with the accepted manual stepping operation. The predetermined signal display is a signal display in which, if the display time is too short, there is a risk of causing a traffic jam or a possibility that a pedestrian cannot safely cross. The shortest display time is, for example, a lower limit value of the display seconds indicating an allowable range when the display seconds are shortened by sensitive control or the like.

  When the specified signal display is a predetermined signal display, if a manual step operation is received within the shortest display time of the signal display from the time when the designated signal display is switched, the manual step operation is performed. Since it does not advance to the next signal display, the display time of the signal display will not switch to the next signal display in a time shorter than the shortest display time, and the display time may be too short, causing traffic jams, or pedestrians Therefore, even when a manual stepping operation is performed, the signal display of the signal lamp can be switched at an appropriate timing.

  In the second invention, when the designated signal display is a predetermined signal display, the control unit performs manual stepping by the operation unit within the shortest display time of the signal display from the time of switching to the designated signal display. When the operation is accepted, the process proceeds to the next signal display when the minimum display time of the signal display has elapsed. As a result, the display time of the signal display is not switched to the next signal display in a time shorter than the shortest display time, and the display time may be too short, resulting in traffic jams, or the possibility that pedestrians cannot safely cross. Even when a manual stepping operation is performed, the signal display of the signal lamp can be switched at an appropriate timing.

  In the third invention, when the designated signal display is a predetermined signal display, the control unit performs manual stepping by the operation unit after the shortest display time of the signal display has elapsed since the switching to the designated signal display. When the operation is accepted, the operation proceeds to the next signal display according to the manual step operation. As a result, the display time of the signal display is not switched to the next signal display in a time shorter than the shortest display time, and the display time may be too short, resulting in traffic jams, or the possibility that pedestrians cannot safely cross. Can be prevented. In addition, after the shortest display time has elapsed, the signal will be switched to the next signal display by manual stepping operation, so that the signal display can be switched at the timing required for smooth traffic flow control. The display can be switched.

  In the fourth invention, the predetermined signal display is a long ladder. Thereby, it is possible to prevent the display time of the floor, which requires a relatively long display time (display seconds) in order to realize a smooth traffic flow, from becoming too short due to the manual stepping operation.

  In the fifth aspect of the invention, the predetermined signal display is the green signal display of the signal lamp for pedestrians. In this case, even if a manual step operation is performed before the shortest display time elapses, it does not step to the next signal display, so that the green light can be prevented from switching in a short time and the occurrence of traffic congestion is suppressed. be able to.

  The predetermined signal display is a blue blinking signal display of the pedestrian signal lamp. In this case, even if a manual stepping operation is performed before the shortest display time elapses, it does not step to the next signal display, so it is possible to prevent the blue blinking signal for pedestrians from switching in a short time, Pedestrians can safely cross the pedestrian crossing.

  The predetermined signal display is such that the signal display of the vehicle signal lamp is a green signal and the signal display of the pedestrian signal lamp is a red signal. In this case, even if a manual step operation is performed before the shortest display time elapses, it does not step to the next signal display, so it is possible to prevent the green light of the vehicle signal lamp from switching in a short time, The occurrence of traffic jams can be suppressed.

  The predetermined signal display is a blue arrow signal (for example, a blue arrow signal for a right turn, a blue arrow signal for a left turn, etc.). In this case, even if a manual step operation is performed before the shortest display time elapses, it does not advance to the next signal display, so that the blue arrow signal of the vehicle signal lamp can be prevented from switching in a short time. For example, a right turn vehicle can be turned right at an intersection, and the occurrence of traffic congestion can be suppressed.

  According to the present invention, even when a manual stepping operation is performed, the signal display of the signal lamp can be switched at an appropriate timing.

It is a block diagram which shows an example of a structure of the traffic signal controller of this Embodiment. It is a schematic diagram which shows an example of the intersection in which the signal light apparatus controlled by the traffic signal controller of this Embodiment was installed. It is a presenting floor plan as an example which the traffic signal controller of this Embodiment uses. It is explanatory drawing which shows an example of stepping operation when the step designated with the step counter is a predetermined step. It is explanatory drawing which shows the other example of stepping operation when the step designated with the step counter is a predetermined step.

  Hereinafter, a traffic signal controller according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of the traffic signal controller 100 of the present embodiment. The traffic signal controller 100 includes a CPU 1, a CPU interface 2, a timer circuit 3, a manual operation unit 4 that receives a manual stepping operation for switching the lamp color, and a present memory as a storage unit that stores step information. 5. Signal display of the present memory reading circuit 6 and a plurality of signal lamps (hereinafter also referred to as “step”, including a floor, a current floor, a lamp color, etc.) are sequentially designated to display a signal (step). The control part 10 etc. which carry out step control is provided. Further, the control unit 10 sequentially specifies the signal display of the signal lamp, and the manual control unit 12 outputs a command (count up command) to specify the next step (signal display) to the step counter 11. Etc.

  The CPU 1 uses a lamp color switching timing signal based on step information that defines the lamp color switching timing (step advance) corresponding to each step (signal display) of each signal lamp device via the CPU interface 2. A certain step command is sent to the step counter 11. The step command is a command to advance the signal display to the next signal display (advance the step to the next step). Note that the lamp color switching timing indicated by the lamp color information is appropriately changed by, for example, sensitive control for sensing the traffic situation of each road that intersects at an intersection.

  Step information includes, for example, lamp color information indicating the state of each lamp color (lit or extinguished) for each step, the standard display seconds (standard display time) of each step, the shortest display seconds (shortest display time), and the longest display Each information such as the number of seconds (the longest display time), the floor type, and the automatic advance flag is included.

  The reference display seconds are, for example, display seconds employed in normal traffic conditions. The shortest display seconds is the lower limit of the display seconds indicating the allowable range when the display seconds are shortened by sensitive control etc., and the longest display seconds are the allowable range when extending the display seconds. This is the upper limit value of the displayed seconds.

  For example, according to the length of the standard display seconds, the floor type is divided into long, middle, short, etc. The short ladder indicates the short display seconds, and the long ladder indicates the long display seconds. The middle level indicates a level whose display seconds are between the long level and the short level.

  For example, the automatic step refers to automatically stepping to the next step (signal display) after the display time of the step has elapsed after switching to a certain step (signal display). The automatic progress flag indicates whether or not automatic progress is being performed. For example, if the automatic step flag is 1, it is an automatic step, and if the automatic step flag is 0, it is not an automatic step. When manually switching the light color of the signal lamp (in the case of manual stepping), if the automatic stepping flag is 0, the current step is maintained unless a manual stepping operation is performed. On the other hand, if the automatic step flag is 1, if the manual step operation is not performed before the reference display time elapses, the next step is automatically performed after the reference display time elapses (including the elapsed time). Go to (step forward).

  The timer circuit 3 is driven based on a clock signal (not shown), measures a unit time of a step (for example, 1 second) according to the setting, and outputs a unit time signal (for example, a clock with a period of 1 second) to the step counter 11. To do.

  The step counter 11 sequentially specifies the steps of the signal lamp based on the step command sent from the CPU 1. Specifically, the step counter 11 measures a step based on a step command sent from the CPU 1 and generates a step signal. The step counter 11 outputs the generated step signal to the display memory reading circuit 6.

  Further, the step counter 11 counts steps based on the unit time signal output from the timer circuit 3. Further, the step counter 11 counts steps based on a count-up command (command) output from the manual control unit 12. Note that counting a step means sequentially stepping to the next step while pointing to the current step.

  The manual operation unit 4 is used when the lamp color of the signal lamp is switched manually by a manual operation when the CPU 1 is abnormal. The manual operation unit 4 includes operation buttons (switches) for performing manual stepping. Every time the operation button is pressed, the manual operation unit 4 outputs an operation signal to the manual control unit 12. Moreover, when performing manual operation, it is not only performed according to traffic conditions, but a police officer may perform manual operation in order to respond to an event. As an event, for example, when a vehicle on which a national custodian or a clerk rides is allowed to pass without stopping at an intersection, traffic control is performed when a marathon or an accident occurs.

  When the step (signal display) specified by the step counter 11 is a predetermined step (signal display), the manual control unit 12 starts the manual operation unit 4 within the shortest display time of the step after switching to the specified step. When a manual stepping operation is received, control is performed so as not to step to the next signal display according to the received manual stepping operation. The predetermined step (signal display) is a step (signal display) in which, for example, when the display time is too short, there is a risk of causing a traffic jam or a possibility that a pedestrian cannot safely cross.

  If the specified step is a predetermined step and if a manual step operation is received within the shortest display time of the step from the point when the specified step is switched to, the next step is performed according to the manual step operation. Since the step does not proceed, the display time of the specified step is not shorter than the shortest display time, so it does not switch to the next step, and the display time may be too short, causing traffic jams, or pedestrians cannot cross safely. The fear can be prevented, and the signal display of the signal lamp can be switched at an appropriate timing even when a manual stepping operation is performed.

  In addition, when the designated step is a predetermined step, the manual control unit 12 receives a manual stepping operation by the manual operation unit 4 within the shortest display time of the step from the time when the designated step is switched to. Is a count-up command (command) to the step counter 11 based on the step information input via the present memory reading circuit 6 to advance to the next step when the shortest display time of the step has elapsed. Is output. This prevents the display time of the step from switching to the next step in a time shorter than the shortest display time, preventing the possibility that the display time will be too short and cause traffic jams or that pedestrians cannot safely cross. Even when a manual stepping operation is performed, the signal display of the signal lamp can be switched at an appropriate timing.

  In addition, when the designated step is a predetermined step, the manual control unit 12 receives a manual stepping operation by the manual operation unit 4 after the shortest display time of the step has elapsed from the time of switching to the designated step. Outputs a count-up command (command) to the step counter 11 based on the step information input via the present memory reading circuit 6 to step to the next step according to the manual stepping operation. . This prevents the display time of the step from switching to the next step in a time shorter than the shortest display time, preventing the possibility that the display time will be too short and cause traffic jams or that pedestrians cannot safely cross. be able to. In addition, after the shortest display time has elapsed, the step proceeds to the next step by manual stepping operation, so the signal display can be switched at the timing required for smooth control of traffic flow, and the signal display of the signal lamp at the appropriate timing Can be switched.

  The predetermined step (signal display) can be a long step. Thereby, it is possible to prevent the display time of the floor, which requires a relatively long display time (display seconds) in order to realize a smooth traffic flow, from becoming too short due to the manual stepping operation.

  Moreover, the predetermined step (signal display) can make the step of the signal lamp device for pedestrians a green light. As a result, even if a manual stepping operation is performed before the shortest display time elapses, the next signal display is not advanced, so that the green light can be prevented from switching in a short time, and the occurrence of traffic congestion is suppressed. be able to.

  Further, the predetermined step (signal display) can be a blue blinking signal for the step of the pedestrian signal lamp. Thereby, even if a manual step operation is performed before the shortest display time elapses, it does not step to the next signal display, so that the blue blinking signal for pedestrians can be prevented from switching in a short time, Pedestrians can safely cross the pedestrian crossing. In addition, when the signal control system for the pedestrian is not the pedestrian separation type signal control system and the pedestrian signal lamp is the blue flashing signal and the vehicle signal lamp is the green signal, the pedestrian blue flashing signal is switched in a short time. As a result, the green signal for the vehicle is also shortened, so that the green signal of the signal lamp for the vehicle can be prevented from switching in a short time, and the occurrence of traffic congestion can be suppressed.

  Further, in the predetermined step (signal display), the step of the signal lamp for the vehicle can be a green signal and the step of the signal lamp for the pedestrian can be a red signal. Thereby, even if a manual step operation is performed before the shortest display time elapses, it does not step to the next signal display, so it is possible to prevent the green light of the signal lamp for the vehicle from switching in a short time, The occurrence of traffic jams can be suppressed.

  Further, in the predetermined step (signal display), the signal display of the vehicle signal lamp can be a blue arrow signal (for example, a blue arrow signal for a right turn, a blue arrow signal for a left turn, etc.). As a result, even if a manual stepping operation is performed before the shortest display time elapses, the next signal display is not advanced, so that the blue arrow signal of the vehicle signal lamp can be prevented from switching in a short time. For example, a right turn vehicle can be turned right at an intersection, and the occurrence of traffic congestion can be suppressed. Note that the pedestrian signal lamp includes a pedestrian separation type signal lamp.

  The display memory reading circuit 6 reads the step information stored in the display memory 5 based on the step signal output from the step counter 11, and performs lamp color output to each signal lamp unit based on the read step information. .

  FIG. 2 is a schematic diagram showing an example of an intersection where a signal lamp controlled by the traffic signal controller 100 of the present embodiment is installed. As shown in FIG. 2, the road in the east-west direction and the road in the north-south direction intersect at an intersection. In addition, although the direction of the road was set to east-west and north-south for convenience, it is not limited to this.

  As shown in FIG. 2, a vehicle signal lamp 201 for a road in the east-west direction and a signal lamp 202 for a vehicle for a road in the north-south direction are installed at predetermined locations near the intersection. In addition, a pedestrian signal lamp 301 is installed on the pedestrian crossing that crosses the north-south road, and a pedestrian signal lamp 302 is installed on the pedestrian crossing that crosses the east-west road. is there. In the following description, the signal lamp 201 is referred to as a signal lamp for vehicles in the east-west direction, the signal lamp 202 is referred to as a signal lamp for vehicles in the north-south direction, and the signal lamp 301 is referred to as a signal lamp for pedestrians in the east-west direction. The signal lamp 302 is referred to as a signal lamp for pedestrians in the north-south direction.

  FIG. 3 is a current floor plan as an example used by the traffic signal controller 100 of the present embodiment. FIG. 3 shows each step (floor) and each signal lamp which are timed by the step counter 11 at the intersection illustrated in FIG. In the figure, the horizontal line represents blue display, the broken line represents yellow display, the double line represents red display, the round arrow represents blue arrow (right turn arrow) display, and the vertical line represents blue blinking. Steps 1 to 14 represent one cycle of the signal lamp. In the example of FIG. 3, the shortest display seconds are set for all the steps, but the present invention is not limited to this, and there may be steps for which the shortest display seconds are not set.

  The case from step 1 (reference numeral PG) in FIG. 3 will be described. The manual control unit 12 determines whether or not step 1 specified by the step counter 11 is a predetermined step. As described above, the predetermined step (signal display) is, for example, a step in which the floor type is a long deck, a vehicle signal lamp for one road, and a pedestrian signal lamp for a road that intersects the one road. The signal display of the vehicle is a green signal, the signal display of the signal lamp for the vehicle is a blue signal, the signal display of the signal lamp for the pedestrian is a flashing blue signal, the signal display of the signal lamp for the vehicle Is a step in which the signal display of the pedestrian signal lamp is a red signal, or the signal display of the signal lamp for the vehicle is a blue arrow signal.

  Step 1 (symbol PG) corresponds to a predetermined step because the signal color of the signal lamp 201 for vehicles in the east-west direction is a blue signal and the color of the signal lamp 301 for pedestrians in the east-west direction is a blue signal. To do. Further, step 1 corresponds to a predetermined step because the floor type is long. Next, a stepping operation when a manual stepping operation is performed will be described.

  FIG. 4 is an explanatory diagram showing an example of a stepping operation when the step specified by the step counter 11 is a predetermined step. FIG. 4A shows a state of waiting for a manual stepping operation, and shows a state where the step counter 11 designates step 1. As shown in FIG. 4B, when the manual stepping operation is performed at time t1 before the shortest display seconds T1 have elapsed from the time point when switching to step 1, as shown in FIG. 4C, the manual control unit 12 When the shortest display time T1 of step 1 has elapsed, the process proceeds to the next step 2. It should be noted that the timing of proceeding to the next step 2 may be the time when the shortest display seconds T1 have elapsed, or the time when a slight processing time delay is taken into account from the time.

  As shown in FIG. 4, when a designated step is a predetermined step, when a manual step operation is received within the shortest display time of the step from the time when the designated step is switched, the manual step operation is performed. The display time of the specified step will not switch to the next step in a time shorter than the shortest display time, and the display time may be too short, causing traffic jams. The possibility that a pedestrian cannot safely cross can be prevented, and the signal display of the signal lamp can be switched at an appropriate timing even when a manual stepping operation is performed. In particular, in the case of step 1 shown in FIG. 4, even if a manual stepping operation is performed, the display time of the green light does not change within 6 seconds, which is the shortest display time, thus preventing the possibility of traffic congestion. can do.

  In the example of FIG. 4, when the manual stepping operation is performed at time t1 before the shortest display seconds T1 have elapsed from the time when switching to step 1, the next time after the shortest display seconds T1 of step 1 has elapsed. However, the present invention is not limited to this. When the shortest display time T1 in step 1 has elapsed, the step does not advance to the next step, but the next manual step. It may be configured to wait for the advance operation.

  FIG. 5 is an explanatory diagram showing another example of the stepping operation when the step specified by the step counter 11 is a predetermined step. FIG. 5A shows a state of waiting for a manual stepping operation, and shows a state where the step counter 11 designates step 1. As shown in FIG. 5B, when the manual stepping operation is performed at the time t1 before the shortest display time T1 has elapsed from the time when switching to the step 1, as shown in FIG. When the number T1 has elapsed, the process does not advance to the next step 2.

  As shown in FIG. 5B, when the manual stepping operation is performed at the time t2 after the time when the shortest display time T1 has elapsed from the time when the process is switched to the step 1, as shown in FIG. Step 2 Note that the timing of stepping to the next step 2 may be time t2, or may be a time considering a slight processing time delay from time t2.

  As shown in FIG. 5, when the designated step is a predetermined step, when a manual stepping operation is accepted after the shortest display time of the step has elapsed since switching to the designated step, the manual stepping is performed. Advance to the next step according to the operation. This prevents the step display time from switching to the next step in a time shorter than the shortest display time, preventing the step from becoming too short and causing traffic jams or preventing pedestrians from safely crossing. Can do. In addition, after the shortest display time has elapsed, the step proceeds to the next step by manual stepping operation, so the signal display can be switched at the timing required for smooth control of traffic flow, and the signal display of the signal lamp at the appropriate timing Can be switched.

  Next, in step 2 (reference numeral PF), the signal color of the signal lamp 201 for vehicles in the east-west direction is a blue signal, and the lamp color of the signal lamp 301 for pedestrians in the east-west direction is a blue blinking signal. It corresponds to a predetermined step. In the case of Step 2, the same step control as illustrated in FIG. 4 or FIG. 5 can be performed.

  Next, in step 3 (sign is PR), the signal color of the vehicle signal lamp 201 in the east-west direction is a blue signal, and the color of the signal lamp 301 for the pedestrian in the east-west direction is a red signal. It corresponds to the step. In the case of Step 3, the same step control as exemplified in FIG. 4 or FIG. 5 can be performed.

  Next, in step 4 (symbol Y), the signal color of the vehicle signal lamp 201 in the east-west direction is a yellow signal, the light color of the signal lamp 301 for pedestrians in the east-west direction is a red signal, The signal color of the signal lamp 202 for vehicles in the direction is a red signal, the lamp color of the signal lamp 302 for pedestrians in the north-south direction is a red signal, and the floor type is a short deck and not a long deck. This does not correspond to the predetermined step. In step 4, step control similar to that illustrated in FIG. 4 or 5 is not performed. In step 4, it is only necessary to step to the next step when the manual stepping operation is performed.

  Next, step 5 (reference numeral A) corresponds to a predetermined step since the signal color of the vehicle signal lamp 201 in the east-west direction is a blue arrow signal. Also in the case of step 5, the same step control as exemplified in FIG. 4 or FIG. 5 can be performed.

  Next, in step 6 (symbol Y), the signal color of the vehicle signal lamp 201 in the east-west direction is a yellow signal, the signal color of the signal lamp 301 for pedestrians in the east-west direction is a red signal, The signal color of the signal lamp 202 for vehicles in the direction is a red signal, the lamp color of the signal lamp 302 for pedestrians in the north-south direction is a red signal, and the floor type is a short deck and not a long deck. This does not correspond to the predetermined step. In step 6, the same step control as illustrated in FIG. 4 or FIG. 5 is not performed. In step 6, as in step 4, it is sufficient to step to the next step when a manual stepping operation is performed.

  Next, in step 7 (symbol AR), the signal color of the vehicle signal lamp 201 in the east-west direction is a red signal, the light color of the signal lamp 301 for pedestrians in the east-west direction is a red signal, The signal color of the signal lamp 202 for vehicles in the direction is a red signal, the signal color of the signal lamp 302 for pedestrians in the north-south direction is a red signal (all red signals), and the type of the floor is a short deck Since it is not a long ladder, it does not correspond to a predetermined step. In step 7, the same step control as illustrated in FIG. 4 or FIG. 5 is not performed. It should be noted that step 7 may be stepped to the next step when the manual stepping operation is performed. Steps 8 to 14 are the same as steps 1 to 7, and a description thereof will be omitted.

  In the above-described embodiment, the manual control unit 12 can be configured by a dedicated hardware circuit, or is configured by a CPU, a RAM, etc., and a program that defines a required processing procedure is loaded into the RAM, and the program is executed. It can also be realized by software by executing on the CPU.

  The disclosed embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

4 Manual operation unit (operation unit)
5 display memory (storage)
10 Control unit (control unit)
11 Step counter 12 Manual control unit

Claims (5)

In a traffic signal controller that sequentially switches the signal display of a plurality of signal lamps for a plurality of roads that intersect at an intersection,
A storage unit for storing step information indicating the shortest display time of signal display of the plurality of signal lamps;
An operation unit for receiving a manual stepping operation for switching the signal display;
A controller for sequentially specifying the signal display of the plurality of signal lamps, and controlling the step of the signal display;
The control unit
When the designated signal display is a predetermined signal display, if a manual stepping operation is received by the operation unit within the shortest display time of the signal display from the time of switching to the designated signal display, the manual step is displayed. A traffic signal controller configured not to step to the next signal display in accordance with a turning operation. The controller is
When the designated signal display is the predetermined signal display, when a manual stepping operation is accepted by the operation unit within the shortest display time of the signal display from the time when the designated signal display is switched, The traffic signal controller according to claim 1, wherein the traffic signal controller is configured to step to the next signal display when the minimum display time of the display has elapsed. The controller is
When the designated signal display is the predetermined signal display, when a manual stepping operation is accepted by the operation unit after the shortest display time of the signal display has elapsed since switching to the designated signal display, The traffic signal controller according to claim 1, wherein the traffic signal controller is configured to step to the next signal display in accordance with a stepping operation.   The traffic signal controller according to any one of claims 1 to 3, wherein in the predetermined signal display, a floor type is a long floor. The predetermined signal display is:
The signal display of the pedestrian signal lamp is green,
The signal display of the pedestrian signal lamp is flashing blue,
The signal display of the signal lamp for vehicles is a green signal and the signal display of the signal lamp for pedestrians is a red signal,
Alternatively, the traffic signal controller according to any one of claims 1 to 4, wherein the signal display of the signal lamp for the vehicle is a blue arrow signal.

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