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http://dx.doi.org/10.12815/kits.2016.15.4.091

Effectiveness Analysis of Variable Speed Limit Systems(VSL) in Work Zones based on Meta-analysis  

Jo, Young (Hanyang University)
Youn, Seok-min (Hanyang University)
Oh, Cheol (Hanyang University)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.15, no.4, 2016 , pp. 91-103 More about this Journal
Abstract
The work zone traffic management is of keen interest because the unstable traffic stream in work zones leads to not only less productive traffic operational efficiency but also negative impacts on traffic safety. A promising method to address such issues is variable speed limit systems(VSLS). VSLS is expected to increase in throughput and to enhance safety by diminishing the crash potential. In addition, the usefulness of VSLS has been demonstrated by significant amount of existing literature. The objective of this study is to identify the effectiveness of VSLS based on a meta analysis technique. Throughput and travel speed were used as measures of effectiveness for VSLS in terms of the operational efficiency and safety respectively. Results showed that approximately 16.4% increase in throughput and 16.5% decrease in travel speed were obtainable by VSLS. The outcomes of this study would be useful in developing technologies and polices for better operation of VSLS.
Keywords
Meta-analysis; Work Zone; Variable Speed Limit(VSL); Traffic Operations; Traffic Safety;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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