Discussion on Setting Traffic Signals with Counting down Display Unit at Intersection Based on Traffic Safety
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Traffic signals with count-down display unit have been wildly used reflecting human oriented principle; nevertheless, the inconsistency between traffic efficiency and safety should be taken into account. The driver would be seduced by the end of green signal to rush through the cross road and hit the first rushing vehicle from the turning point of the signal causing severe traffic accident at the intersection. In order to avoid this kind of accident, the interval of the turning point needs to be prolonged. However, it would lower the crossing capacity, and improper setting of interval duration might cause serious traffic conflict. So, the timing signal should be set cautiously with the aid of other measures such as adjusting the interval duration, propaganda of traffic safety and rules.