Driver fatigue detection technology in active safety systems

Driver fatigue and sleep deprivation have been widely recognized as critical safety issues that cut across all modes in the transportation industry. FMCSA, the trucking industry, highway safety advocates, and transportation researchers have all identified driver fatigue as a high-priority commercial vehicle safety issue. There has been much research work done in driver fatigue detection. This paper presents a comprehensive review of driver fatigue detection technologies in recent decades. The methods of fatigue detection mainly focused on measures of the driver´s state, driver performance and the combination of the driver´s state and performance. The measures of driver´s state included eye state, mouth shape and head position; the measures of driver performance included lane tracking and tracking of distance between vehicles. These approaches are presented and discussed in detail. Some typical driver monitoring systems are also introduced in this paper. Finally, summary and conclusions are presented.