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Development of Shock Wave Delay Estimation Model for Mixed Traffic at Unsaturated Signalized Intersection  

Kim, Won-Gyu (한국항공대학교)
Kim, Byeong-Jong (한국항공대학교)
Park, Myeong-Gyu (한국항공대학교)
Publication Information
Journal of Korean Society of Transportation / v.28, no.6, 2010 , pp. 75-84 More about this Journal
Abstract
Controlled traffic intersection is critical point in terms of transportation network performance, where the most of traffic congestion arises. One of the most important and favorable measure of effectiveness in the signal controlled intersection is approach delay. Although lots of efforts to develop traffic delay estimation models have been made throughout the years, most of them were focusing on homogeneous traffic flow. The purpose of this research is to develop a traffic delay estimation model for traffic flow mixed with bus based on the horizontal shockwave theory. Traffic simulation is performed to test the adaptation level of the model in generic environment. The result shows that the delay increases with increasing bus traffic. Overall model accuracy comparing simulation result is acceptable, that shows the error range around 10 percent.
Keywords
shock wave; traffic signal; delay estimation; mixed traffic; approach delay;
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