公交信号优先控制策略研究综述

公交信号优先是提高公交系统运行速度和可靠性的重要手段。回顾公交信号优先控制40多年的研究成果,以总结该领域的总体研究脉络。对被动优先、主动优先、实时优先以及与不同设施相结合的信号优先控制策略进行了综述分析。研究表明,公交信号优先控制策略的发展历程是：控制的实时性逐步提高,优化要素的考虑逐渐全面,控制对象日益扩大,控制策略逐步系统化、适用性逐步增强。最后指出,公交信号优先控制多目标平衡、控制策略的协调与网络优先控制,以及控制与调度策略的协调优化是后续研究的重点,而公交车辆行程时间预测以及如何应对预测偏差带来的影响仍然是信号优先控制中的关键问题。

A Review of Prioritizing Signal Strategies for Bus Services

Prioritizing signal timing for public transit vehicles effectively improves the reliability and travel speed of bus services. Through reviewing the research in the past 40 years, this paper summarizes the general study trend on the prioritizing signals for bus services. Particularly, the paper analyzes the four types of prioritizing signal strategies： passive, active and adaptive, and combination with other facilities. The analysis results show that the development of prioritizing signal for bus service has advanced into a practical control system that is real-time, comprehensive with control multiple objects. The paper concludes that the future research on signal priority for buses should focus on multi-objective, coordination, and network priority as well as the coordination between signal control and bus dispatching. The key issue is still bus travel time prediction and how to cope with the adverse effect of forecasting error.