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http://dx.doi.org/10.7470/jkst.2015.33.2.182

Comparison of Section Speed Enforcement Zone and Comparison Zone on Traffic Flow Characteristics under Free-flow Conditions in Expressways  

Shim, Jisup (The Cho Chun Shik Graduate School for Green Transportation, KAIST)
Jang, Kitae (The Cho Chun Shik Graduate School for Green Transportation, KAIST)
Chung, Sung Bong (Graduate School of Railroad, Seoul National University of Science and Technology)
Park, Shin Hyoung (Department of Transportation Engineering, Keimyung University)
Publication Information
Journal of Korean Society of Transportation / v.33, no.2, 2015 , pp. 182-191 More about this Journal
Abstract
The Korean government introduced an automated speed enforcement system (ASES), which uses traffic enforcement cameras, to counteract safety issues that are caused by speeding. As the information of the traffic enforcement camera locations is provided to the drivers via navigation systems and mobile applications in a timely manner, drivers can avoid enforcement by momentarily diminishing their speeds only near the camera locations. To prevent drivers' evasional behavior and improve the effectiveness of ASES, section control, which enforces speeding vehicles by measuring their average travel speeds over a stretch of road and checking against the speed limit, has been recently implemented. In this study, Section Speed Enforcement Zone and Comparison Zone are compared in terms of traffic stream characteristics under free flow conditions. To this end, loop detector data were obtained from the three study sites and analyzed. The study results demonstrated that drivers maintain their speeds below the speed limit over the enforcement section with a lower variance of speeds.
Keywords
automated speed enforcement system; cross-sectional analysis; kangaroo effect; section speed enforcement; traffic flow;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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