Distraction:talking on coll phpne ,seeing a bee or masquito in to car, having kids in the car.
Fatigue/Tiredness:Falling asleep.
Other activities: trying to eat and drink,changing the radio station.
Bad weather :poor visibility.
According to U.S. National Safety Cauncil,twenty-eight percent of traffic accidents happen when people talk on cell phone or send text messages when they are drving.