Requirements of a traffic management department, asked the main road traffic lights green for at least 2 minutes (not including the green light flashes the time), in this context, when the slip road vehicle or person is detected, the main road the green light flashes for 3 seconds, then yellow lamp is lit for 3 seconds, then red light, green light at the same time slip, red light off. When the slip is not detected continuously for 5 seconds when the cars and people, slip the green light flashes for 3 seconds, and then the yellow light is lit for 3 seconds, then red light, green light while the main road, the red light off, the longest continuous green slip 20 seconds (not including the green flashing light). If the green light flashes from a ban on pedestrian and vehicle traffic support on the road, you can ensure that the maximum time the main road closed to traffic for 26 seconds. Slip through the instrument to detect whether the vehicles and pedestrians, the pedestrians, because o

digit traffic light.doc

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