Research on road traffic flow status based on survival analysis

Abstract

: Based on the data of bayonet and floating car, this paper studies the traffic flow state of the main roads in Shenzhen, analyses the relationship between speed and flow, and establishes a speed-flow model. It studies the characteristics of traffic flow in Shenzhen and the overall distribution of congestion duration. The results demonstrate that there is a strong correlation between flow and speed, which have obvious characteristics of morning and evening peak within a day, and the flow and speed show significant differences between work days and non-work days. As for the congestion duration of each road, they are generally under 16 minutes. Specifically, when the congestion duration is less than 8 minutes, there is a high probability that the congestion state ends; while the congestion lasts more than 10 minutes, the congestion status is less likely to end in a short time. In view of the above analysis, it is recommended that relevant departments strengthen monitoring and control of real-time road traffic so that the traffic environment in Shenzhen can be improved.