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Automotive Engineering ›› 2022, Vol. 44 ›› Issue (6): 821-830.doi: 10.19562/j.chinasae.qcgc.2022.06.003

Special Issue: 智能网联汽车技术专题-感知&HMI&测评2022年

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An Analysis on Longitudinal Driving Characteristics in Urban Intersection Based on Natural Driving Data

Tian Yuan1,Xuan Zhao1,Rui Liu1(),Qiang Yu1,Xichan Zhu2,Shu Wang1   

  1. 1.School of Automobile,Chang’an University,Xi’an  710064
    2.School of Automotive Studies,Tongji University,Shanghai  201804
  • Received:2021-12-15 Revised:2022-01-17 Online:2022-06-25 Published:2022-06-28
  • Contact: Rui Liu E-mail:liuruiaza@163.com

Abstract:

In order to meet the higher requirements of driver assistance systems for human-like driving ability in urban intersection, the longitudinal driving characteristics of drivers in real traffic in that area are investigated in this paper. 778 sample data of drivers approaching urban intersections are extracted from natural driving data, and YOLOv4 is applied to identifying various types of road users in traffic scene. ANOVA is used to investigate the differences in reaction characteristics across motion types and traffic densities, and hierarchical regression models are established to analyze the relationships between braking characteristics and motion state, motion type and road users. The results show that high-density traffic significantly reduces approaching speed. Compared with right-turning drivers, stopping drivers have longer reaction distance and may approach intersection with higher acceleration and braking intensity in a shorter time with braking started 4.46s earlier when approach speed is higher or reaction distance is shorter. Different road users have different effects on braking characteristics: stopping drivers primarily pay attentions to the vehicles traveling in the same direction, and right-turning drivers are mainly concerned with pedestrians and cyclists.

Key words: urban intersections, driving behavior, ANOVA, hierarchical regression, natural driving data, human-like driving