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http://dx.doi.org/10.7855/IJHE.2014.16.5.083

Characteristics of Geometric Conditions Affecting Freeway Travel Speed : Focused on Speed Limit Change  

Hong, Sungmin (Hokkaido University, Graduate School of Engineering)
Oh, Cheol (Dept. of Transportation and Logistics Engineering, Hanyang University)
Publication Information
International Journal of Highway Engineering / v.16, no.5, 2014 , pp. 83-90 More about this Journal
Abstract
PURPOSES : The purpose of this study is to identify the factors affecting the effectiveness of speed limit change that is defined as the amount of increased travel speed. METHODS : A ordered logit model was adopted to analyze the relationship between the change in travel speed and contributing factors. A stretch of Kyungbu freeway was selected for the analysis because the Korea expressway corporation has raised speed limit from 100km/h to 110km/h since September 1st in 2010. RESULTS : The results showed that geometric design elements, speeding cameras, and section length were identified as factors contributing the effectiveness. Contributing geometric design elements include the number of horizontal curves and vertical curves that do not meet the design requirement with 110km/h speed limit. CONCLUSIONS : The outcome of this study will be used for establishing various traffic operations and control strategies for freeway speed management.
Keywords
speed limit change; travel speed; geometric conditions; ordered logit model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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