Supplementary material for the paper "Pedestrian Planet: What YouTube Driving from 233 Countries and Territories Teaches Us About the World"

Pedestrian crossing behaviour varies globally. This study analyses dashcam footage from the CROWD dataset, covering 233 countries and territories, to examine crossing initiation time, crossing speed, and contextual variables, including detected vehicles, traffic mortality, GDP, and Gini coefficient. Qatar had the longest mean crossing initiation time (6.44~s), while China exhibited the fastest crossing speed (1.69~m/s). On average, worldwide, pedestrians exhibited a crossing initiation time of 3.18~s and crossing speed 1.20~m/s. Crossing speed and crossing initiation time are negatively correlated ($r = -0.18$), indicating slower crossings after longer hesitation. Crossing speed is negatively correlated with Gini coefficient ($r = -0.19$) and positively correlated with traffic mortality ($r = 0.18$). Similar crossing times in countries with different infrastructures, such as Bangladesh (3.42~s) and the Netherlands (3.40~s), underscore the complex interaction between infrastructure and behavioural adaptation. These findings emphasise the importance of culturally aware road design and the development of adaptive interfaces for vehicles.

行人过街行为存在全球地域差异。本研究针对涵盖233个国家与地区的CROWD数据集（CROWD dataset）中的行车记录仪影像展开分析，旨在探究行人过街启动时间、过街速度，以及包括检测到的车辆、交通死亡率、国内生产总值（GDP）与基尼系数在内的上下文变量。其中，卡塔尔的平均过街启动时间最长，达6.44秒；中国的过街速度最快，为1.69米/秒。全球范围内，行人的平均过街启动时间为3.18秒，平均过街速度为1.20米/秒。过街速度与过街启动时间呈负相关（r=-0.18），意味着行人迟疑越久，过街速度越慢。过街速度与基尼系数呈负相关（r=-0.19），与交通死亡率呈正相关（r=0.18）。不同基础设施背景的国家却拥有相近的过街启动时间，例如孟加拉国（3.42秒）与荷兰（3.40秒），这凸显了基础设施与行为适应之间复杂的交互作用。本研究结果强调了兼顾文化差异的道路设计，以及车载自适应交互界面开发的重要性。