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http://dx.doi.org/10.12652/Ksce.2017.37.5.0837

A Study on the Modification Value for Estimation of Traveling Speed During Rainfall in Interrupted Traffic Flow  

Mo, Moo Ki (Seokyung University)
Lee, Seung Joo (Seokyung University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.37, no.5, 2017 , pp. 837-844 More about this Journal
Abstract
Generally, V/C ratio in uninterrupted traffic flow and average travel speed in interrupted traffic flow are utilized as measure of effect for assessing operational situation of roads. The set of road conditions and traffic conditions are considered to be major variables for assessing operational situation in the traffic flow. However, weather conditions such as rainfall also affect the operational situation of roads. The studies reflected by the rainy situation are conducted in the uninterrupted flow, but the related studies are insufficient in the interrupted flow. In this study, the modification factors during rainfall in the interrupted flow were suggested, and the factors could be used when calculating the average travel speed during rainfall in the interrupted flow. By utilizing the data that were investigated in the same road and traffic conditions and the different weather conditions (rainy day or clear day), the modification factors were founded on regression analysis of the travel speed during rainfall as a dependent variable. Modification factors was suggested in dividing peak time, non-peak time, and whole period. Based on this study, the modification factors can be used to complementing the average travel speed model for assessing the operational situation of urban streets during rainfall.
Keywords
Interrupted traffic flow; Travel speed; Rainfall; Modification factor;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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