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.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Review of Variable Speed Limits and Advisories


    Subtitle :

    Theory, Algorithms, and Practice


    Additional title:

    Transportation Research Record


    Contributors:


    Publication date :

    2014-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Novel Algorithm for Variable Speed Limits and Advisories for a Freeway Corridor with Multiple Bottlenecks

    Lu, Xiao-Yun / Shladover, Steven E. / Jawad, Iman et al. | Transportation Research Record | 2019





    Following Advice from Traffic Advisories

    W. L. Dewing / S. P. Stackhouse | NTIS | 1994