Controller device of traffic signal equipment

A controller device of traffic signal equipment for switch control of signals in accordance with an output signal of a traverser detecting device, comprising:

• means for performing signal switch control for letting the traffic signal equipment display a first signal that indicates a cross inhibition, a second signal that indicates to be crossable and a third signal that indicates a cross inhibition period will come soon;
• means for displaying the second signal on the traffic signal equipment during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the first signal to the second signal;
• first switching means for switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period;
• and
• second switching means for switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the first time period.

A traffic signal system comprising:

• traffic signal equipment installed at a crosswalk;
• a traverser detecting device installed at the end in the crossing direction of the crosswalk;
• a controller device for controlling the traffic signal equipment in accordance with an output signal of the traverser detecting device;
• and
• a transmitting device carried by a target person of extension that is a specific pedestrian,
• the traverser detecting device including
• means for reading information contained in a signal from the transmitting device and transmits the information to the controller device, and
• the controller device including
• means for monitoring an input signal from the traverser detecting device, after switching a traffic signal displayed on the traffic signal equipment from a cross inhibition signal to a non cross inhibition signal,
• means for displaying the non cross inhibition signal on the traffic signal equipment during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the cross inhibition signal to the non cross inhibition signal,
• first switching means for switching the traffic signal displayed on the traffic signal equipment from the non cross inhibition signal to the cross inhibition signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, and
• second switching means for switching the traffic signal displayed on the traffic signal equipment from the non cross inhibition signal to the cross inhibition signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the period.

A traffic signal system comprising:

• traffic signal equipment installed at a crosswalk;
• a traverser detecting device installed at the end in the crossing direction of the crosswalk;
• a controller device for controlling the traffic signal equipment in accordance with an output signal of the traverser detecting device;
• and
• a transmitting device carried by a target person of extension that is a specific pedestrian,
• the traverser detecting device including
• means for reading information contained in a signal from the transmitting device and transmits the information to the controller device, and
• the controller device including
• means for performing signal switch control for letting the traffic signal equipment display a first signal that indicates a cross inhibition, a second signal that indicates to be crossable and a third signal that indicates a cross inhibition period will come soon,
• means for displaying the second signal on the traffic signal equipment during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the first signal to the second signal,
• first switching means for switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, and
• second switching means for switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the first time period.

A computer program product for use in a computer that performs signal switching for traffic signal equipment in accordance with an output signal of a traverser detecting device, the computer program product making the computer execute the process comprising the steps of:

• switching a traffic signal displayed on the traffic signal equipment from a cross inhibition signal to a non cross inhibition signal;
• letting the traffic signal equipment display the non cross inhibition signal during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the cross inhibition signal to the non cross inhibition signal;
• switching the traffic signal displayed on the traffic signal equipment from the non cross inhibition signal to the cross inhibition signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period;
• and
• switching the traffic signal displayed on the traffic signal equipment from the non cross inhibition signal to the cross inhibition signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the time period.

A computer program product for use in a computer that controls traffic signal equipment to display a first signal that indicates a cross inhibition, a second signal that indicates to be crossable and a third signal that indicates the cross inhibition period will come soon, the computer program product making the computer execute the process comprising the steps of:

• letting the traffic signal equipment display the second signal during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the first signal to the second signal;
• switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period;
• and
• switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the first time period.

A computer readable recording medium on which a computer program is recorded for making the computer execute the process comprising the steps of:

• switching a traffic signal displayed on the traffic signal equipment from a cross inhibition signal to a non cross inhibition signal;
• letting the traffic signal equipment display the non cross inhibition signal during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the cross inhibition signal to the non cross inhibition signal;
• switching the traffic signal displayed on the traffic signal equipment from the non cross inhibition signal to the cross inhibition signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period;
• and
• switching the traffic signal displayed on the traffic signal equipment from the non cross inhibition signal to the cross inhibition signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the time period.

A computer readable recording medium on which a computer program is recorded for making the computer execute the process comprising the steps of:

• letting the traffic signal equipment display the second signal during a second time period before a second set time passes after a first time period ends when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period, the first time period being before a first set time passes after switching from the first signal to the second signal;
• switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the second time period when a detection signal that indicates a target person of extension is received from the traverser detecting device during the first time period;
• and
• switching the traffic signal displayed on the traffic signal equipment from the second signal to the third signal responding to end of the first time period when the detection signal is not received from the traverser detecting device during the first time period.