摘要
分析了传统车辆跟驰模型的局限性,建立了考虑前后车速度关系的车辆跟驰模型:前后车以相同速度匀速行驶时的跟驰模型;前后车以不同速度匀速行驶,后车速度小于前车速度时的跟驰模型;前后车以不同速度匀速行驶,后车速度大于前车速度,当前车速度不变时的跟驰模型和前车减速时的跟驰模型.以四种跟驰模型为基础,分别建立了相应的速度-间距关系和车辆追尾模型.追尾模型表明:最小车头距离是后车速度的二次函数,随后车速度急剧缩小;当实际车头距离小于该值时,则会发生追尾事件.
Because of the limitation of the traditional linear vehicle-following model, in consideration of speed relations among adjacent vehicles, four vehicle-following models are set up, they are the vehicle-following models under the following four conditions： the leading and following vehicles at the same speed, lower speed of the following vehicle than leading vehicle, higher speed of the following vehicle than leading vehicle when the leading vehicle keeps speed and slows down. According to these models, four speed-spacing relations and four rear-end collision models are got accordingly. This model indicated that minimal headway is quadratic function of the following vehicle speed as the following vehicle speed reduces; rear-end collision will happen, when actual headway is less than certain value.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第9期87-90,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50278027)
中国博士后基金资助项目(20040350533)
湖北省教育厅优秀中青年教师科研项目(2003B001).
关键词
车辆跟驰理论
车辆跟驰模型
速度-间距关系
车辆追尾模型
vehicle-following theory
vehicle-following model
speed-spacing relation
rear-end collision model
