Understanding the risks
Sleepiness contributes to approximately 1 in 5 fatal and serious road accidents. When we are feeling sleepy, for example after a night shift, driving is one of the most dangerous things we can do. Sleepiness reduces alertness, slows reaction times, and increases the likelihood of being involved in an accident. Sleep-related vehicle accidents (SRVAs) are more likely to result in serious injury, because they tend to occur at high speed, and there is limited braking or avoidance action.