| This paper emphasizes all factors affecting driving fatigue; the interaction of all factors which may lead to driving fatigue; driving fatigue course, law and mechanism; effect on sorting of driving fatigue, assessment system on driving fatigue and test system; fatigue effect identification mode in dangerous. The mechanism of formation, accumulation and variation of driving fatigue is put forward in this paper. The static and dynamic testing and assessment mode of driving fatigue is also established. All these offer theory foundations to traffic accident precaution and elimination.The paper divides labor into five working mode: muscle, sensation, information, thinking and creation working mode. According to this the fatigue is separated into five parts: muscle, sensation, information, thinking and creation fatigue. Driving fatigue is mainly composed of the sensation fatigue and the operation fatigue. It is actually at first to get ideas about the driving fatigue equilibrium mechanism, the driving fatigue information operation mechanism, the matching mechanism for the driving fatigue and driving operation. Surely, all these form an initial theory.By using transfer function, quantitative analysis, pattern analysis and reduced analysis of driving fatigue can be finished. Based on automatic control theory, driving fatigue can be analogized as two parts: inertia link and proportion differential link. This shows driving fatigue has the general characteristics of two-order system.The state of driving fatigue can be examined by a testing system, which is developed by transportation safety laboratory of Southwest Jiaotong University. As the equilibrium is formed by vision, vestibule and sensation system, the change of gravity reflects the interaction of different system and central nervous system. Based upon the neuro-physiologic mechanism, the change of balance stability when drivers are in fatigue can be identified. Moreover, fatigue factor can be identified and analyzed. Testing system is developed by ourselves. By lab and field research, the assessment module is built in this paper.The driving feedback and selection mode built in this paper, which starts refresh ideas on filtering out dangerous and high dangerous person mode. In the research, a set of simulation equipment is developed to examine the drivers' static and dynamic fatigue. Recur to the apparatus, contrast and control experiment are made among different ages, workload intension and workload factors group. The endings summarize as following: (1) driving sensation fatigue investigation (investigation of psychological and physiologic index and contrast investigation of fatigue); Continuous driving load and discrete driving load investigation of fatigue. Driving fatigue investigation on normal speed and high speed; Dynamic eyesight can index the degree of fatigue sensitively. The dynamic eyesight decrease while the age increases, so driving fatigue is. Using combined index of dynamic eyesight and static eyesight, zoning assessment system can be obtained. (2) The investigation about driving fatigue of information operation showed if the information become more complex, the reaction seriously reduced, however, fatigue degree increased. Otherwise, with the age advancing, the reaction slowed. (3) An instrument called testing force machine is utilized to correctly illustrate the center of gravity movingtrack. It can collect and calculate those benefit data automatically, furthermore, user could obtain some important outputs including the equilibrium index of driving fatigue easily. So as to access an objective testing system, experiments were made with various workloads, ages, and environments in different situation. (Lean at 15, 30 degree, eye-closed, eye-opened, etc.) (4) The research illustrated the relationship between driving fatigue and driving time, speed, environment, and therefore came up with a chain of standards: the longest time for continuous safety driving (at different ages, conditions), day driving time, the highest speed for safe...
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