The Impact of Extreme Weather on Urban Road Traffic and Network Based on Floating Vehicle Trajectory Data

In recent years, the frequent occurrence of extreme weather in China has brought great adverse effects to the operation of urban road traffic. Many studies have been proposed focusing on the impact of extreme weather on the traffic flow properties. However, the influence of extreme weather on whole dynamic traffic networks is rarely investigated. Based on massive floating vehicle trajectory data and extreme weather data, this paper explores the impact of rainstorms on urban road traffic network. The result demonstrates that extreme weather like rainstorms has a negative impact on traffic, especially during the peak periods. Freeways and expressways are more sensitive to extreme weather. Besides, rainstorms seriously affect the robustness and accessibility of the network. These findings can provide a scientific basis for traffic managers to formulate traffic control measures under extreme weather.