Results from a recent US DOT study showed that compared to drivers getting seven to nine hours of sleep a night, those who reported getting six hours of sleep had 1.3 times the odds of causing a crash.
Drivers who reported getting fewer than four hours had a startling 15.1 times the odds of causing a crash, which is comparable to the risk of a driver with a blood alcohol level 1.5 times the legal limit (that’s about nine drinks for an average-sized person).
Read the article at Forbes.