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In this book, the methods of driver´s fatigue detection have been studied. Furthermore, we explain the process of designing an analysis method based on fuzzy logic theory using three types of factors to detect the driver´s fatigue: Driver crucial factors, Environmental factors and Conditional factors. In the proposed method using tactile and environmental sensors, the system predicts driver´s fatigue before s/he falls asleep and concentrates the driver attention by alarming. This system helps the driver to keep his/her alertness during driving. An advantage of the proposed fatigue detection method is that it does not interfere with the driver´s habit in vehicle control and it resumes functioning only in critical moments.

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