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Aug 30, 2023
Prediction of Freeway Rear-End Collision Risk Based on Trajectory Data
Authors: Hui-Ying Wen [email protected], Jie Cheng [email protected], and Sheng Zhao [email protected]Author Affiliations
Publication: CICTP 2023
ABSTRACT
This paper presents a method to predict the instantaneous rear-end conflict risk of individual cars based on trajectory data that uses Time to Collision (TTC) to identify the risk. Features from 1 to 5 s before the risk occurs are extracted, including the vehicle’s driving status, interaction with the preceding car and macro traffic state, while the vehicles without risk are extracted as control. Filtered features are used to build Random Forest and XGBoost models to predict the rear-end conflict risk from 1 to 5 s before. The results show that the instantaneous conflict prediction models are effective, with accuracy and recall from 1 to 3 s prior to conflict surpassing 92% and 76%, respectively. The vehicle’s speed, speed difference with the preceding vehicle, space and time headway, as well as the average speed and average space headway of the lane are all important influencing factors.
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Published online: Aug 30, 2023
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1School of Civil Engineering and Transportation, South China Univ. of Technology, Guangzhou, China. Email: [email protected]
2School of Civil Engineering and Transportation, South China Univ. of Technology, Guangzhou, China. Email: [email protected]
3School of Civil Engineering and Transportation, South China Univ. of Technology, Guangzhou, China. Email: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.