Journal of South China University of Technology(Natural Science Edition) ›› 2024, Vol. 52 ›› Issue (4): 126-137.doi: 10.12141/j.issn.1000-565X.230159

• Traffic Safety • Previous Articles     Next Articles

Online Driving Style Recognition Method Considering Lane-Changing Game

ZHANG Yunchao1 HUANG Jianling2 LI Yongxing1 CHEN Yanyan1 YANG Anan2 ZHANG Yongnan1   

  1. 1.Beijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, China
    2.Beijing Intelligent Transportation Development Center, Beijing 100027, China
  • Received:2023-03-30 Online:2024-04-25 Published:2023-06-07
  • Contact: 陈艳艳(1970-),女,博士,教授,主要从事智能交通研究。 E-mail:cdyan@bjut.edu.cn
  • About author:张云超(1994-),男,博士生,主要从事道路交通安全研究。E-mail:zhangyunchao@emails.bjut.edu
  • Supported by:
    the National Natural Science Foundation of China(62203021)

Abstract:

Driving style is the external expression of driving behavior. Drivers with aggressive style tend to engage in more frequent risky driving operations, intensifying interactions between vehicles and affecting lane-changing safety. Identifying a driver’s driving style before executing a lane-changing can effectively constrain driver’s behavior through personalized warning information. This paper proposed the SHAP-XGBoost method, which considers lane-changing game in a connected environment, aiming to achieve the real-time recognition of driving styles during the lane-changing intention phase. Firstly, the fluctuation degree of individual behavior and gaming behavior during the lane-changing intention was used as input feature variables, and the driving style was marked by correlation analysis, principal component analysis, and four different clustering methods. Next, the proposed SHAP-XGBoost model was used to select key features for training the driving style recognition model, and online recognition was completed through a sliding window. Finally, experiments were conducted using the HighD dataset. Results show that: compared with clustering methods based on centroid distance, connectivity and density distribution, spectral clustering based on graph theory principles can better label driving styles based on the morphology of the input feature variables; using the proposed SHAP-XGBoost model with 14 key features for driving style recognition can improve online recognition efficiency without loss of accuracy, and the driving style recognition accuracy is up to 99%; simultaneously incorporating individual features and gaming features as inputs to the model can improve the accuracy of driving style labeling and recognition. The research results can be used to support personalized lane-changing decisions and early warnings.

Key words: intelligent transportation, driving style recognition, extreme gradient boosting tree, lane-changing safety

CLC Number: