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Stochastic Traffic Signal Timing Optimization.
| 题名： | Stochastic Traffic Signal Timing Optimization. |
| 作者： | KAMARAJUGADDA, A.; PARK, B. |
| 关键词： | OPTIMIZATION; TRAFFIC SIGNAL TIMING |
| 摘要： | Signalized intersections are a critical element of an urban road transportation system and maintaining these control systems at their optimal performance for different demand conditions has been the primary concern of the traffic engineers. Currently, average control delay is used as a performance measure of a signalized intersection. The control delay is estimated using the delay equation provided by the Highway Capacity Manual (HCM). The HCM delay equation is a function of multiple input parameters arising from geometry, traffic and signal conditions. Variables like volume, green time and saturation flow rate that influence delay computations are stochastic variables, which follow their characteristic distribution. This implies that delay has to be estimated as a distribution as against the point estimate, the average delay. Various simulation programs and optimization techniques have evolved that aid the traffic engineer in the optimization process. None of the optimization programs consider the day-to-day stochastic variability in the delay during the optimization process. The purpose of this research is to estimate variability in delay at signalized intersections and incorporate the variability in the optimization process. |
| 报告类型： | 科技报告 |
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