China Safety Science Journal ›› 2023, Vol. 33 ›› Issue (9): 157-163.doi: 10.16265/j.cnki.issn1003-3033.2023.09.1676

• Safety engineering technology • Previous Articles     Next Articles

Study on trip chain clustering of hazardous materials transportation vehicle based on GPS data

CHEN Ranran1(), XU Jiali2, LI Jian1,**()   

  1. 1 Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China
    2 Liuzhou Yunshang Longcheng Big Data Industry Development Co., Ltd., Liuzhou Guangxi 545001, China
  • Received:2023-03-10 Revised:2023-06-21 Online:2023-09-28 Published:2024-03-28
  • Contact: LI Jian

Abstract:

In order to assist the government in regulating the transportation of hazardous materials, a cluster analysis framework based on GPS data was proposed. We set the spatiotemporal threshold, extracted the vehicle base station and halfway effective stop point from the GPS data, and generated trip chains of the hazardous material vehicle. Based on calculating the number of trip chains, the average number of stop points, the average stop time of trip chains and the average distance of trip chains, the average risk of trip and trip point were proposed to measure the risk of hazardous materials transportation vehicles. The characteristics of vehicle trip chain were taken as clustering indicators, silhouette coefficient and the sum of squares due to error were taken as evaluation indicators, and by comparing the results of K-Means, K-Means++, PAM and FCM algorithms, the trip chains of hazardous materials transportation vehicles were clustered. The feasibility of the framework was verified by case analysis. The results show that the K-Means++ algorithm has the best effect, and the hazardous material transportation vehicles are divided into 5 categories: chemical park connection (44.19%), intercity transportation (31.42%), city distribution (13.23%), freight terminal connection (9.76%) and non-working state (1.40%).

Key words: global positioning system (GPS) data, hazardous materials transportation vehicle, trip chain, cluster, transportation risk