Crashes that occur due to a driver leaving their lane, including
run-off-road, fixed object, head-on, rollover, and sideswipe crash types (VHB).
Lane departure crashes result from a number of root causes.
Distraction, drug or alcohol use, speeding, and/or inexperience.
Rain, snow, ice, wind, or fog.
Brakes and tire pressure.
Curves, banking, or superelevation.