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An Incident Detection Method for Using Speed-Density Relations  

Lee, Seon-Ha (국립공주대학교 건설환경공학부)
An, U-Yeong (국립공주대학교 건설환경공학부)
Gang, Hui-Chan (국토연구원)
Publication Information
Journal of Korean Society of Transportation / v.24, no.2, 2006 , pp. 127-137 More about this Journal
Abstract
This Paper Presents a novel incident detection method for using the speed-density difference between detectors. When a incident is happened the downstream traffic condition is mostly lower speed and higher density and the upstream is higher speed and lower density In respect of such characteristics, we can suggest a method for detecting an incident based on the speed-density information provided from detectors. The incident detection method is tested by using the accident data collected from the Cheonan-Nonsan Highway. The results show that suck an incident detection method can analyze the position of accident by comparing the speed-density difference between detectors. The work described in this paper is only at on early stage, in the sense that there are several areas to be further investigated in application of this method. such as setting a critical value for judging the incident. a level of accident wave, a varying Pattern between the incident locations and detectors, etc.
Keywords
FTMS; AID;
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