Paper Info
Title
Development of analytical procedure for selection of control measures to reduce congestions at various freeway bottlenecks
Abstract
Variable speed limit (VSL) and ramp metering (RM) affect freeway traffic operations in different ways and, accordingly, result in different effects on system travel time. The primary objective of this study is to propose an analytical procedure to help determine which control measure should be selected given different freeway bottlenecks and traffic conditions. The bottlenecks considered included an isolated merge bottleneck, a merge bottleneck with a closely spaced upstream off-ramp, and a diverge bottleneck with a closely spaced upstream on-ramp. Two RM and a VSL control strategies were considered, including the ALINEA, ALINEA/Q and feedback based VSL. The maximum achievable improvements in system efficiency by various control measures were calculated and the results were tested using modified cell transmission models. A coordinated control strategy that combined ALINEA/Q and VSL control was also proposed. The effects of VSL and RM control on system travel time at different freeway bottleneck areas were compared to identify the applicable conditions of different control measures. The analytical procedure was proposed for the selection of control measures at different bottlenecks and the ex-ante estimation of control effects were also discussed.
Year
DOI
Venue
2018
10.1080/15472450.2017.1371598
Journal of Intelligent Transportation Systems
Keywords
Field
DocType
traffic control,bottleneck,ramp metering,travel time,variable speed limit
Bottleneck,Simulation,Transport engineering,Engineering,Travel time,Metering mode,Speed limit
Journal
Volume
Issue
ISSN
22
1
1547-2450
Citations 
PageRank 
References 
2
0.47
12
Authors
4
Name
Order
Citations
PageRank
Zhibin Li1416.93
Pan Liu2366.75
Chengcheng Xu3374.96
Wei Wang49311.54