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A Shortest Path Algorithm Considering Directional Delays at Signalized Intersection  

Min, Keun-Hong (서울대학교 건설환경공학부)
Jo, Mi-Jeong (서울대학교 건설환경공학부)
Kho, Seung-Young (서울대학교 건설환경공학부)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.9, no.3, 2010 , pp. 12-19 More about this Journal
Abstract
In road network, especially in urban area, inefficiency of travel time is caused by signal control and turn maneuver at intersection and this inefficiency has substantial effects on travel time. When searching for the shortest path, this inefficiency which is caused by turn maneuver must be considered. Therefore, travel time, vehicle volume and delay for each link were calculated by using simulation package, PARAMICS V5.2 for adaptation of turn penalty at 16 intersections of Gangnam-gu. Turn penalty was calculated respectively for each intersection. Within the same intersection, turn penalty differs by each approaching road and turn direction so the delay was calculated for each approaching road and turn direction. Shortest path dealing with 16 intersections searched by Dijkstra algorithm using travel time as cost, considering random turn penalty, and algorithm considering calculated turn penalty was compared and analyzed. The result shows that by considering turn penalty searching the shortest path can decrease the travel time can be decreased. Also, searching the shortest path which considers turn penalty can represent reality appropriately and the shortest path considering turn penalty can be utilized as an alternative.
Keywords
Shortest path; intersection; turn penaly; delay; Dijkstra;
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Times Cited By KSCI : 1  (Citation Analysis)
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