Research on the Model of Safety Boundary Condition Based on Vehicle Intersection Conflict and Collision
Published April 2, 2019 by SAE International in United States
Downloadable datasets for this paper availableAnnotation of this paper is available
Because of the high frequency and serious consequences of traffic accidents in the intersection area, it is of great significance to study the vehicle conflict and collision scenarios of the intersection area. Due to few actual crash accidents occurring in naturalistic driving studies data or field operational tests data, the data of traffic accident database should be also used to analyze the intersection conflict and collision. According to the China Field Operation Test (China-FOT) database and the China in Depth Accident Study (CIDAS) database, the distribution feature of the respective intersection scenario type is obtained from the data analysis. Based on the intersection scenario type, two characters of intersection conflict and collision, the environmental character and the vehicle dynamic character, are used to analyze for the integration process of intersection conflict and collision. The environmental character contains several parameters, including environment type, weather and time, which has a strong influence on the collision accidents. Through the environmental parameters analyzing, the distribution model of environmental character is obtained. The vehicle dynamic character includes two vehicle dynamic parameters, TTC (Time to Collision) and EPET (Estimating Post Encroachment Time), which are used to analyze the intersection conflict and collision scenarios. The risk evaluation method of China Field Operation Test data and logistic regression method are used to establish the vehicle dynamic model of intersection conflict and collision according to the TTC and EPET parameters of vehicle braking time. Using the environmental character distribution model and vehicle dynamic model, the intersection boundary safety condition model is established. Based on the China Field Operation Test database and the China in Depth Accident Study database, the safety boundary condition of the two kinds of intersection scenarios are obtained, which is used to automatically generate the real intersection conflict and collision test scenarios for vehicle simulation study.
CitationWu, B., Zhu, X., Liao, M., and Liu, R., "Research on the Model of Safety Boundary Condition Based on Vehicle Intersection Conflict and Collision," SAE Technical Paper 2019-01-0132, 2019, https://doi.org/10.4271/2019-01-0132.
Data Sets - Support Documents
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