Physiological limits of locomotive drivers on successive night shifts in the People's Republic of China.
D000222:Adaptation, Physiological; D000328:Adult; D002681:China; D003119:Color Perception Tests; D006801:Humans; D008297:Male; D012890:Sleep / Q000502:physiology*; D014186:Transportation; D014937:Work; D014940:Work Schedule Tolerance