高速公路汽车追尾是一种严重的交通安全事故 ,引起了交通科技界的广泛重视 .近几年来 ,人们试图从理论与技术上解决高速公路汽车追尾问题 ,其中建立追尾的数学模型是研究追尾现象的基础 .文中在分析了汽车追尾的原因后 ,基于神经网络理论 ,建立了追尾的 BP网络模型 ,并讨论了追尾预测系统的技术实现方案 . Motorway rear-end collision is a serious traffic accident, which aroused widespread attention of transportation science and technology community.In recent years, people try to solve the rear-end problem of highway automobile theoretically and technically, in which the rear-end mathematical model is established to study rear-end phenomenon Based on the neural network theory, this paper established a rear-end BP network model, and discussed the technology of the rear-end prediction system.