Research on Drowsy Driving
Crashes and Fatalities Due to Drowsy Driving
Crashes caused by drowsy driving often exhibit a set of common factors. Although sleepiness can affect all types of crashes during the entire day and night, drowsy-driving crashes most frequently occur between midnight and 6 a.m., or in the late-afternoon – both times when there are dips in your circadian rhythm (the internal human body clock that regulates sleep). Many drowsy-driving crashes also involve only a single vehicle, with no passengers besides the driver, running off the road at a high rate of speed with no evidence of braking. Drowsy-driving crashes also frequently occur on rural roads and highways.