(1.Dept. of Automation, Tsinghua University, 100084 Beijing, China; 2.Dept. of Civil and Environmental Engineering, University of Alberta, T6G2W2 Alberta,Canada)
Clc Number:
TP29
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Abstract:
To evaluate the pedestrian-vehicle conflict safety in mixed traffic condition, this paper analyzes and compares the commonly used parameters on traffic conflict and presents a model to classify independent pedestrian-vehicle conflict safety. The model is validated by using video data from two different traffic scenes. The result shows that the pedestrian-vehicle conflict safety is highly sensitive to the Time Difference to Collision (TDTC) parameter and the vehicle speed. The closer to zero a TDTC value is and the faster a vehicle is, the more dangerous a pedestrian-vehicle conflict may be. Comparing with independent observation, the model can correctly classify about 86.2% conflicts; only 2.1% conflicts are classified as safer by the model.