摘要
针对高速公路雾天低能见度及路面附着系数减小的情况,进行安全车速研究。根据跟车状态下停车过程及标志视认相关方法,分别进行基于停车视距模型(包括AASHTO停车视距模型和NCHRP停车视距模型)和基于交通标志认知距离的安全车速计算。以湖北黄黄高速公路为例,综合3种模型条件下安全车速,最终得出雾天气候下的交通管理措施。
This paper studied the safe vehicular velocity in foggy weather with consideration of poor visibility and road adhesion coefficient＇s reducing on expressway. Accoring to shuton process of following states and traffic sign＇s cognition on expressway, calculation of safe vehicular velocity based on stopping sight distance model （including stopping sight distance model of AASHTO and NCHRP） and traffic sign＇s cognition distance were carried on. Finally, Huanghuang expressway was selected as the example, the safe vehicular velocity of three model conditions were synthetically considered, the traffic management measures were obtained for reference.
出处
《交通科技与经济》
2009年第2期1-3,共3页
Technology & Economy in Areas of Communications
基金
国家自然科学基金资助项目(50578128)
关键词
雾天
安全车速
能见度
附着系数
高速公路
停车视距
foggy weather
safe vehicular velocity
visibility
adhesion coefficient
expressway
stopping sight distance
