The invention provides a low visibility highway leading traffic method, which includes the following steps: utilizing the simulation platform to collect the line shape, the position of the preceding vehicle and the driver, the speed and the acceleration and deceleration points at any time; According to the collected position and speed of the driver's vehicle, calculating the headway h; According to the collected acceleration and deceleration time points of the driver's vehicle, calculating the reaction time T of the driver; According to the collected vehicle speed, calculating the minimum safe headway hmin; Evaluating the safety of car-following driving at the certain time Ah=h-hmin; Evaluating the following driving safety of the whole road section A; According to the obtained following distance and the variation range of vehicle speed, analyzing the choice of leading vehicle speed; Determining the traffic plan for leading the team. By establishing the highway driving safety evaluation model under the low visibility condition, the invention provides suggestions for the highway traffic flow operation management under the low visibility condition, which ensures the driving safety on the road while realizing the continuous operation of the highway under the low visibility condition. Utilizing th siunationplatfonn to collect the line shape, t1 positionof th precedng vehicle and the driver, the speed and the acceleration and deceleration points at any tine Accordng to the collected position and speed o f the driver's vehicle, calculating the headway According to th collected accderation and deceleration tine points o f te diver's veicle, calciiating t1 reaction tine T of th driver Accordng to th collected vehicle speed calclatng th nminu nsafe headway Evahating the safety of following driving at a certain point in time Ah=h-hm-in Evaluafmg the following driving safetyofthe whole roadsection Collecting data fror multiple vehicles at the sane tin, perfornng Logistic regression to obtain the mo del fomul P=f( , V, H, T): when the household 20.5, it is urmafe, whe1P <0.5, it is safe to fellow the car Analyzing the selection o f the leading vehcle speed based on the variation range o f the following distance and vehicle speed obtained in step I Deternng the leading traffic plan Figure 1. The logic block diagram of the method of leading traffic on low visibility expressway of the invention
A method of leading traffic on low visibility expressway
2021-02-04
Patent
Electronic Resource
English
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
Expressway traffic sign night visibility analysis method considering driver characteristics
European Patent Office | 2024
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