考虑降雨影响的全速度差跟驰模型及标定

摘要

在分析降雨对交通流影响的基础上,通过驾驶员反应延迟时间参数和路面附着系数参数量化分析了降雨对车辆跟驰行为的影响,并通过安全距离模型将两影响参数嵌入到全速度差模型中,结合全速度差模型建立了考虑降雨影响的全速度差跟驰模型.利用I880N实际数据对模型进行了标定,且对标定结果进行误差分析.结果表明,降雨主要影响车辆的优化速度和车辆之间的安全距离,对车辆间速度差的影响很小.%To study the impact of rainfall on the car-following behavior, based on the analysis of rainfall on traffic flow, the impact of rainfall on car following behavior is analyzed by quantifying two parameters which are the driver reaction delay time and road adhesion coefficient.By embedding the two parameters into the full speed difference model through safety distance model, the full speed difference following model considering the effect of rainfall is established.Finally I880 actual data are used to calibrate the model, and the error analysis is carried out based on the calibration results.The results show that the rainfall mainly affects the vehicle optimization speed and safe distance, and has little impact on the speed difference between vehicles.