Risk Analysis and Evaluation for Conflicts between Crossing Pedestrians and Right-turning Vehicles at Intersections

In recent years, the conflicts between crossing pedestrians and right-turning vehicles have become more severe at intersections in China, where right-turning vehicles are usually not controlled by traffic signals. Pedestrian safety is increasingly important, but few studies have addressed this issue. In this study, the authors propose a quantitative method for evaluating the conflict risk between pedestrians and right-turning vehicles at intersections based on micro-level behavioral data obtained from field surveys and video recordings. A typical intersection in Shanghai was selected as the study site. In total, 670 min of video were recorded during the peak hours from 7:30 AM to 9:30 PM. After processing the video information, the authors obtained vehicle and pedestrian tracking data, including the velocity, acceleration, deceleration, time, and location coordinates. Based on these data, the authors proposed several conflict indicators and extracted these indicators automatically using MATLAB to identify pedestrian–right-turning vehicle conflicts and to determine the severity of the conflicts identified. The authors identified 93 conflict examples. The conflict risks were quantitatively classified using the K-means fuzzy clustering method and all of the conflicts were assigned to five grades. The authors also analyzed the characteristics of the conflict distribution and the severity of different types of conflict, which showed that conflicts on different areas on the crosswalk differed in their severity.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 14p

Subject/Index Terms

Filing Info

  • Accession Number: 01764186
  • Record Type: Publication
  • Report/Paper Numbers: TRBAM-21-01294
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 23 2020 11:21AM