Volume 39 Issue 1
Feb.  2021
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Article Navigation >  Journal of Transport Information and Safety  > 2021  >  39(1): 17-25
DING Rui, LIU Jun, JIANG Yan, XU Jin. Driving Risks of Interchange Ramps Based on Vehicle Acceleration Data[J]. Journal of Transport Information and Safety, 2021, 39(1): 17-25. doi: 10.3963/j.jssn.1674-4861.2021.01.0003
Citation: DING Rui, LIU Jun, JIANG Yan, XU Jin. Driving Risks of Interchange Ramps Based on Vehicle Acceleration Data[J]. Journal of Transport Information and Safety, 2021, 39(1): 17-25. doi: 10.3963/j.jssn.1674-4861.2021.01.0003
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Driving Risks of Interchange Ramps Based on Vehicle Acceleration Data

doi: 10.3963/j.jssn.1674-4861.2021.01.0003
  • 1.

    College of Traffic & Transportation, Chongqing Jiaotong University, Chongqing 400074, China

  • 2.

    Chongqing Rail Transit(Group)Co., Ltd, Chongqing 400042, China

  • 3.

    Sichuan Nanyu Expressway Co. LTD., Nanchong 637000, Sichuan, China

  • 4.

    Chongqing Key Laboratory of"Human-Vehicle-Road"Cooperation and Safety for Mountain Complex Environment, Chongqing Jiaotong University, Chongqing 400074, China

  • Received Date: 2020-12-04
  • Publish Date: 2021-02-28
    Abstract
  • More than 30 participants are tested in actual passenger-car driving test at Nanshan Interchange and Jiangnan Interchange in Chongqing to clarify the operating characteristics and driving risks of interchange ramps. Using high-precision equipment such as Speedbox and Mobileye, the continuous running data of passenger cars on four roundabout ramps are collected, including driving speed, lateral acceleration, and longitudinal acceleration. The running statuses of vehicles on roundabout ramps are specified. Besides, the G-G diagram, characterizing the relationship between lateral and longitudinal acceleration, is used to analyze the driving risk during ramp driving. The danger levels at different positions of the interchange ramps and the high-risk sections of dangerous driving behavior are determined. The results show that: ① The lateral acceleration and speed of the passenger cars on the interchange ramps are distributed in a triangle, and the longitudinal acceleration and speed are distributed in an elliptical shape. ② The proportion of dangerous driving behaviors on small radius curve ramps is higher than that on large radius curve ramps. ③ By counting the proportions of dangerous driving-behavior points of different sections, the dangerous sections of the ramps are divided into low risk, medium risk, and high risk. ④ Male drivers have a higher proportion of dangerous driving behaviors on the interchange ramps than female drivers, and adventurous drivers have a higher proportion of dangerous driving behaviors than that of drivers of other driving styles. ⑤ The dangerous high-incidence road sections of interchange ramps are usually located in the sections with drastic speed changes, namely the deceleration section of the turn and the acceleration section of the exit.

     

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