恶劣天气条件下车辆换车道的安全模型

Lanechanging Safety Model for Deteriorative Weather

摘要:

考虑雾天对驾驶员能见度的影响,提出雾天驾驶反应延迟时间模型.依据车辆换车道的行车特征,提出基于连续反向圆曲线的换车道几何描述模型.结合车辆跟车行驶模型,建立恶劣气象条件影响下车辆换车道的安全模型,制定了不同天气条件和能见度范围下禁止换车道的车道流量控制标准.采用历史事故资料分析和现场实验的方式,验证了换车道时距比与事故比之间的良好关系.

Abstract:

A driver postpone response model was put forward by taking the fog influence on drivers’ visibility into consideration.Based on vehicle runtrack simplified as continue reversecircle,a describing lanechanging model was set up firstly.Combined with the carfollowing model,the safety lanechanging model was introduced to audit the vehicle lanechanging safety during deteriorative weather.Based on numerical simulation results,lane volume criterion of lanechanging restriction was then set up for deteriorative weather.Field survey and accidents investigation were carried out,good proportion between lanechanging related headway and accidents was testified.