China Safety Science Journal ›› 2019, Vol. 29 ›› Issue (12): 40-45.doi: 10.16265/j.cnki.issn1003-3033.2019.12.007

• Safety Systematology • Previous Articles     Next Articles

Study on driving style clustering based on K-means and Gaussian mixture model

LIU Tong1, FU Rui1,2, ZHANG Mingfang3, TIAN Shun1   

  1. 1 School of Automobile, Chang'an University, Xi'an Shaanxi 710064, China;
    2 Key Laboratory of Automobile Transportation Safety Technology, Ministry of Transport, Chang'an University, Xi'an Shaanxi 710064, China;
    3 School of Electrical and Control Engineering, North China University of Technology, Beijing 100144, China
  • Received:2019-09-20 Revised:2019-11-11 Online:2019-12-28 Published:2020-11-24

Abstract: In order to study drivers' car-following characteristics and explore an effective method to classify driving styles, 50 participants were recruited to carry out a real road driving test. A GMM with results of K-means clustering was established based on two-dimensional variables: average car-following time gap and average braking time gap. And then results of different types of drivers were analyzed. The research shows that clustering result is better with three categories (aggressive drivers, steady drivers, and conservative drivers) with an average contour value of 0.45. It is found that aggressive drivers tend to choose a smaller car-following time gap or braking time gap while conservative drivers usually take a larger value, and a much softer clustering result with a high separability between samples would be achieved.

Key words: driving style, K-means clustering, Gaussian mixture model (GMM), car-following characteristics, braking characteristics

CLC Number: