Accumulation of pedestrian risk behaviours at urban intersections and their association with roadway characteristics in Mexico

Engineering notes

Key topics: autonomous driving. See the paper for implementation details and experimental results.

Chinese explanation / 中文解读

中文解读待补充：本站会优先为端到端自动驾驶、BEV感知、3D目标检测、轨迹预测、路径规划、LiDAR感知等高价值论文补充中文说明。

Original abstract

Background Pedestrian safety remains a major public health concern in urban environments, particularly in low- and middle-income countries. While individual risk behaviours have been widely studied, less is known about how the built environment influences their accumulation during real-world crossing events. Objective To analyse the association between roadway characteristics and the accumulation of pedestrian risk behaviours at urban intersections in Guadalajara, Mexico. Methods An observational cross-sectional study was conducted based on direct observation of pedestrian crossings at multiple urban intersections between March and June 2024. The unit of analysis was the individual crossing event. Seven risk behaviours including crossing during vehicular green signals, crossing outside the crosswalk and diagonal crossing were used to construct a composite risk index (range 0–7). Associations were evaluated using multivariable Poisson regression models with robust standard errors clustered at the intersection level. Results A total of 1018 pedestrian crossings were analysed. Most pedestrians exhibited none (39.8%) or one (45.3%) risk behaviour while 14.0% accumulated two or more. The most frequent behaviours were crossing with vehicular green (28.1%), crossing outside the crosswalk (19.6%) and diagonal crossing (19.2%). In multivariable models, a higher number of traffic directions (incidence rate ratio 1.50, 95% CI 1.30 to 1.80), curb presence (incidence rate ratio 1.30, 95% CI 1.10 to 1.50) and unsignalised intersections (incidence rate ratio 1.30, 95% CI 1.10 to 1.5) were associated with greater accumulation of risk behaviours. In contrast, arterial and higher-level roadway types were associated with lower risk accumulation (incidence rate ratio 0.84, 95% CI 0.79 to 0.90). Conclusions Pedestrian risk behaviours tend to accumulate and vary according to roadway characteristics. These findings underscore the role of the built environment in shaping pedestrian behaviour and support infrastructure-based interventions to improve urban safety.

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