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Estimation of Acceleration Rates of Bus and Passenger car at Signalized Intersections  

Sim, Jae-Gwi (도로교통공단 경기지부)
Lee, Sang-Su (아주대학교 환경건설교통공학부)
Publication Information
Journal of Korean Society of Transportation / v.27, no.6, 2009 , pp. 69-77 More about this Journal
Abstract
The maximum and mean acceleration rates of vehicles estimated from the stopping conditions at signalized intersections provided an important clue to analyze traffic accident investigation when there was a dispute about legal liability such as first entering vehicle at the intersection, etc. This paper provided the maximum and mean acceleration rates of vehicles reflecting current traffic conditions in Korea through field studies. The mean acceleration rates of vehicles at stopline were measured up to 50m at the intervals of 5m. Results showed that the mean acceleration rate for bus was found to be $1.011^m/s^2{\sim}1.314^m/s^2$(0.1g~0.13g), and for passenger car was $1.548^m/s^2{\sim}1.818^m/s^2$(0.16g~0.19g). Statistical test results indicated that the observed differences from vehicle types and vehicle positions were statistically significant for the all ranges tested. It is expected that the accuracy of accident investigation practice will be improved by applying the acceleration rate values presented in this paper.
Keywords
Acceleration rate; Signalized Intersections; Speed; Bus; Accident investigation;
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Times Cited By KSCI : 2  (Citation Analysis)
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