A car crash can be caused by a number of factors. One cause canbe when one vehicle collides with another vehicle. A vehicle canalso collide with an animal, road debris, pedestrian,architectural, and geographical obstacles. Traffic collisions canresult in death, injury, and property damage. A number ofconditions can contribute to the risk of a car crash. Vehicledesign and speed of operation are both factors that can contributeto an automobile crash. Road design and driver impairment are alsoimportant factors in some accidents.Driver impairment caused by alcohol and drugs significantlyaffects the likelihood of a car crash. A study done in Canadaindicated that 33% of vehicular deaths were caused by intoxicationof the driver. Prescription drugs also impair a driver's reflexes;Over the counter