Sleepiness Among Night-Time Drivers: Relationship to Blood Alcohol Concentration and Other Factors

The study aimed to explore the distribution and correlates of subjective sleepiness among the general night-time driving population.The survey took place in three British Columbia communities in June 2003 between 21:00 hours to 03:00 hours. Sites and vehicles were selected randomly. Surveyors obtained information on several demographic and situational variables including self-assessed degree of sleepiness and self-reported hours asleep and...