Police: travel main survey traffic light

On the scene, the reporter consulted the city public security bureau of science and technology information confidential address. Officials indicated that at present the rock crossing device of the timer, chosen is fixed cycle form, the countdown timer is mainly used for fixed timing time, plan control intersection traffic lights, "according to the relevant provisions of the flat peak, peak mutual transformation, when the traffic light control operation plan transformation, the timer will be in two traffic light cycle to black screen operation condition, appeared to H now, this is normal, not equipment problems."

"In some red or green light time of more than 99 seconds, appeared the longest time, appeared the timer time would end in 99 seconds, until the end of the long time timing." Said the controller introduces, because rock lights countdown timer can only show 2 digits, when the timer number reached 99 seconds, number of seconds will no longer continue to go forward, people need to wait for a few seconds to more than 10 seconds long time, "now, many domestic cities traffic lights countdown timers are also appeared only double-digit."

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