Journal
JOURNAL OF TRANSPORTATION SAFETY & SECURITY
Volume 14, Issue 10, Pages 1750-1775Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/19439962.2021.1960662
Keywords
Pedestrian safety; signalized intersections; pedestrian-vehicle conflict; Ordered Probit model; risk factors
Categories
Funding
- National Natural Science Foundation of China, China [51875049]
- Hunan Science Foundation for Distinguished Young Scholars of China, China [2019JJ20017]
- Hunan Key Research and Development Program, China [2020SK2099]
- National Key RAMP
- D Program of China [2017YFE0118400, 2019YFE0108000]
- CATARC Initiative Scientific Research Program [19210127]
- Hunan Provincial Innovation Foundation for Postgraduate, China [CX20200850]
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This study investigated the unsafe conditions of pedestrian crossings at signalized intersections in Changsha, China, identifying risk factors related to severity of conflicts between pedestrians and vehicles. Significant relationships were found between severity level and characteristics of pedestrian behavior, vehicles, and conflicts, with roadway characteristics also influencing the likelihood of severe pedestrian-vehicle conflicts. Recommendations for improving the pedestrian traffic environment were proposed based on the findings.
The purpose of this study is to investigate the unsafe conditions of pedestrian crossings at signalized intersections under the mixed traffic environment in Changsha, China. For this purpose, based really pedestrian-related crash data of Changsha city and visualized crash geographic information, six typical urban signalized intersections were selected. The peak and off-peak surveillance videos of six signalized intersections were collected via field surveys, 1,070 conflicts were extracted through using professional trajectory tracking software Traker to track pedestrian and vehicle trajectories. PSMT (Pedestrian Safety Margin Time) was used as an indicator to identify the severity of conflicts, and manually recorded the characteristics of pedestrian crossing behavior, vehicles and roads during the conflict. An Ordered Probit model was established to analyze the risk factors that led to different severities of the conflict between pedestrians and vehicles. The model outcome indicates a significant relationship between the severity level and characteristics of pedestrian behavior, vehicles and conflict. Moreover, it was identified that, in addition to the above characteristics, roadway characteristics significantly influenced likelihood of severe pedestrian-vehicle conflict. Finally, these factors are discussed, and suggestions for improving the pedestrian traffic environment are proposed from different perspectives.
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