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Development of Predicting Models of the Operating Speed Considering on Traffic Operation Characteristics and Road Alignment Factors In Express Highways  

Lee, Jeom-Ho (도로교통안전관리공단 전북지부 안전시설부)
Hong, Da-Hui (서울시립대학교)
Lee, Su-Beom (서울시립대학교)
Publication Information
Journal of Korean Society of Transportation / v.24, no.5, 2006 , pp. 109-121 More about this Journal
Abstract
The road should be designed in the consistent alignment which the driver can drive safely. Also, proper highway environments in order to maintain optimal operational speeds on highway sections should be provided In design stage, for highway environments, it is essential for an operational speed estimation model to different highway environments. If a method which could evaluate the status of the road safety is developed through this operational speed estimation model, it is possible to provide safe and more comfortable highways to road users. In the study factors to effect on operational speeds are classified into three groups horizontal & vertical alignments and traffic operation characteristic factors. Factors are chosen to effect on operational speeds by using collation analysis as classifications of tangent sections, horizontal curve sections and vertical curve sections. In order to develop operational speed estimation models in express highways, multi-regression analysis has been used in this study using the selected factors. This study has meaning that the developed estimation models for operational speeds and evaluation of degree of safety to horizontal and vortical alignments simultaneous. In order to represent whole area of the country with the developed models, the models should be re-analyzed with vast data related with road alignment factors in the near future.
Keywords
Operating Speed Estimation; Traffic Operation Characteristics; Highway Alignment Factors; Vertical Alignment Characteristics; Design Speeds;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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