详情

Applications of Variable Speed Limits in Recurrent Congestion

项目名称：	Applications of Variable Speed Limits in Recurrent Congestion
摘要：	Recurrent traffic congestion caused by volume surges in peak periods disrupts highway networks by creating bottlenecks. While network expansion would alleviate the problem, resources to do so are very limited. In consequence, transportation professionals are faced with the challenge of developing methods that mitigate congestion and improve safety under constrained budgets. One method that has shown promise is the use of variable speed limit (VSL) control systems. VSL control dynamically adjusts the speed limit on a given roadway segment with the objective of harmonizing the spatial speed transition from free-flow conditions to the congested conditions resulting from a bottleneck. Preliminary studies have shown that VSL control can delay the formation of bottlenecks and shorten the bottleneck duration. It is also expected that VSL control can also improve travel time and measures of safety through the segment if it is properly deployed. The primary objective of this research project is to develop a VSL implementation tool for highway segments plagued by recurrent congestion. The tool will include an evaluation module for evaluating the expected benefits from proper VSL deployment; an operational module that will provide guidance on the proper VSL deployment, such as the location of VSL sings and detectors; and an assessment module to analyze the results of a properly deployed VSL control system. The final product of this research will be a comprehensive toolbox that will assist in decision making, field deployment and analysis of VSL controls on recurrently congested highway segments.
状态：	Active
资金：	63822.00
资助组织：	Mid-Atlantic Universities Transportation Center
执行机构：	University of Maryland, College Park
开始时间：	20120601
实际结束时间：	20130531
主题领域：	Administration and Management；Construction；Energy；Highways；Operations and Traffic Management