Some people claim that most crashes involves sleep deprivation, but I agree with Vladimir that we have no idea.
What is suggestive is two studies of one hour differences in school start times (americans drive to school at 7:30 at age 16). One compared Virginia Beach to Chesapeake. Better was when Lexington changed its start time. The student crash rate went down 16%. The state rate went up by 8%, so these are very volatile numbers and this could be data-mining. Also, day light savings causes crashes to spike. What’s great about the school studies is that they’re about practical interventions and not just assigning blame.
Some people claim that most crashes involves sleep deprivation, but I agree with Vladimir that we have no idea.
What is suggestive is two studies of one hour differences in school start times (americans drive to school at 7:30 at age 16). One compared Virginia Beach to Chesapeake. Better was when Lexington changed its start time. The student crash rate went down 16%. The state rate went up by 8%, so these are very volatile numbers and this could be data-mining. Also, day light savings causes crashes to spike. What’s great about the school studies is that they’re about practical interventions and not just assigning blame.