Review of Variable Speed Limits and Advisories: Theory, Algorithms, and Practice

Previous studies on variable speed limits (VSLs) were reviewed. These studies were classified as three types: simulations for algorithm development and evaluations, VSL implementation and field testing, and a combination of VSLs with ramp metering. The review considered strategies and algorithms, targeted traffic improvements (safety, throughput, etc.), applicable traffic conditions, performance evaluations, and simulation or test results and their implications. Most practices in Europe indicated that the use of VSLs was effective in both traffic safety and flow improvement, although the former was more significant. Practices in the United States indicated that safety improvement was significant but the impact on traffic flow was controversial. Practices are summarized, and some new viewpoints and future research directions are presented.

• Record URL:
  • https://doi.org/10.3141/2423-03
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=Review+of+Variable+Speed+Limits+and+Advisories%3a+Theory%2c+Algorithms%2c+and+Practice&author=X.+Lu&author=S.+Shladover&publication_year=2014
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309295192
• Authors:
  • Lu, Xiao-Yun
  • Shladover, Steven E
• Publication Date: 2014

Language

• English

Media Info

• Media Type: Print
• Features: References; Tables;
• Pagination: pp 15–23
• Monograph Title: Intelligent Transportation Systems 2014, Volume 1
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2423
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Algorithms; Field tests; Highway safety; Ramp metering; Through traffic; Traffic flow; Variable message signs; Variable speed limits
• Geographic Terms: Europe; United States
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I85: Safety Devices used in Transport Infrastructure;

Filing Info

• Accession Number: 01506645
• Record Type: Publication
• ISBN: 9780309295192
• Report/Paper Numbers: 14-3134
• Files: TRIS, TRB, ATRI
• Created Date: Feb 7 2014 10:12AM