The impact of decreasing the speed limit for motor vehicles on bicycle commuting

Data used to examine the effect of the reduction of the speed limit for motor vehicles on bicycle commuting in France. Raw data for Paris come from https://opendata.paris.fr, for Lyon from https://data.eco-counter.com, for Nantes from https://www.data.gouv.fr, for Montpellier from https://data.montpellier3m.fr and for Rennes from https://data.rennesmetropole.fr. The total cycling infrastructure is the sum of cycle paths, cycle lanes, special COVID-19 infrastructure, and other infrastructure. For Nantes and Montpellier, the data concerning dedicated COVID-19 infrastructure were added from https://ecf.com/dashboard. Data for the area of the cities comes from https://www.insee.fr. For the outcome of interest and precipitation level, the few missing values were imputed using principal components analysis. The city of Paris implemented the speed limit decrease on 31 August 2021, Nantes on 31 August 2020, Montpellier on 1 August 2021 and Rennes on 31 August 2020.

本数据集用于探究法国机动车限速下调对自行车通勤的影响。巴黎的原始数据源自https://opendata.paris.fr，里昂源自https://data.eco-counter.com，南特源自https://www.data.gouv.fr，蒙彼利埃源自https://data.montpellier3m.fr，雷恩源自https://data.rennesmetropole.fr。骑行基础设施总规模为自行车专用道、自行车道、新冠疫情专项骑行基础设施及其他骑行基础设施的总和。其中南特与蒙彼利埃的新冠专项骑行设施数据，补充自https://ecf.com/dashboard。城市行政区域面积数据源自https://www.insee.fr。针对研究关注的结局指标与降水量水平，少量缺失值通过主成分分析（Principal Components Analysis）完成插补。巴黎市于2021年8月31日实施机动车限速下调措施，南特市于2020年8月31日实施，蒙彼利埃市于2021年8月1日实施，雷恩市于2020年8月31日实施。