Evaluating the Effects of Signal Countdown Timers on Queue Discharge Characteristics at Signalized Intersections in China
作者： Pan Liu , Hao Yu , Wei Wang , Jiahua Ma , Shuchun Wang
DOI: 10.3141/2286-05
关键词:
摘要: A study evaluated the effects of signal countdown timers on queue discharge characteristics protected left-turn and through movements at signalized intersections in China. Using data collected from 13 approaches seven intersections, research team saturation headways start-up lost time for both movements. Countdown had a positive but generally limited impact capacity intersections. Signal significantly affected driver starting response On average, reduced by 0.6 s per cycle 2.25 selected sites. little effect headways. resulted headway 0.11 higher 0.15 The difference was statistically significant movements, not also looked extensively compression end each queue. presence compressions For usually started when 5 remain green arrow time. may start as early 14
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