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Traffic signals with count-down display unit at signalized intersections have been widely used, reflecting a human oriented principle. However, the inconsistency between traffic efficiency and safety should be taken into account. The paper summarizes the types and characteristics of count-down signal lights, analyzed pedestrian＇s choice behavior by field observations, videos and questionnaires. At last, it concludes with pedestrians＇ preferences and demands regarding count-down signal lights. We hope it will give support for a better use of count-down signals at signalized intersection. © 2012 American Society of Civil Engineering.
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