中文摘要：

在当今各种重大伤亡事故中，交通事故所占比例最大．其中驾驶疲劳已经成为引发交通事故的主要原因，但驾驶疲劳的产生受交通标志、环境、驾驶员自身素质等诸多因素交互作用，成因复杂，表现特征呈现出多维度、多侧面．基于安全人机工程学的原理分析了驾驶疲劳的各种影响因素及其相互关系，归纳出其形成过程分为感知、判断决策和动作3个阶段，提出疲劳驾驶的行为模式，并探讨其内在机理，这对于预防驾驶疲劳，保障车辆安全畅行具有十分重要的理论及现实意义．

英文摘要：

Nowadays, traffic accident occupies the largest scale among all the fatal accidents. Driving fatigue has become the main factor traffic accidents. Driving fatigue, formed by interactions of complex reasons, such as traffic marks, environment, drivers etc. It shows the multiple dimensionality and the multiple profile characters. Based on safety ergonomics principle, the paper analyzes these interactive factors, which induces three processing steps ： knowing, judging and acting, concludes the behavior mode of driving fatigue and analyzes the mechanism. It is very important on theory and practice to prevent driving fatigue and ensure vehicle safety.