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http://dx.doi.org/10.12815/kits.2017.16.2.116

An Analysis on Compliance of Variable Speed Limit under Foggy Conditions using Driving Simulator  

Kim, Soullam (Korea Institute of Civil Engineering and Building Technology)
Lee, Sukki (Korea Institute of Civil Engineering and Building Technology)
Kim, Yongseok (Korea Institute of Civil Engineering and Building Technology)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.16, no.2, 2017 , pp. 116-127 More about this Journal
Abstract
A fog on road is known as a weather factor that affects traffic flow. The method in order to solve the problem, recently, Variable Speed Limit(VSL) which provide reasonable speed limit by road and weather conditions in real time is introduced. However, if drivers do not comply with VSL, the road safety more decrease than without VSL because individual vehicle's speed deviation is larger than without VSL. Therefore, this paper aims to analyze to speed limit compliance and traffic characteristics under foggy conditions with and without VSL. A test using driving simulator divides into normal and foggy condition with visibilities are 200m, 150, 50~100m. The test results showed that 70 subjects's average speed mostly obeyed speed limit, but speed deviation generally declined with VSL. Especially, the speed deviation more reduced under foggy conditions. According to this study, compliance of VSL clearly rose in low visibility and VSL helped improve road safety due to reduction of speed deviation. The results of this study are expected to make use of reasonable speed limit for reference.
Keywords
Foggy; Variable Speed Limit(VSL); Driving Simulator; Compliance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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