Motor Vehicle Safety The facts are startling. Motor vehicle accidents are the number one cause of injury and death among people aged 1-34 in the United States. While preventing an accident is not always possible, we can take measures to significantly decrease the chance and severity of injury to ourselves and our children. The following tips have proved invaluable in preventing serious injury and even death: Always wear a seatbelt. Even in vehicles equipped with airbags, nothing can replace the effectiveness of wearing a seatbelt. Make sure your child is restrained in a child safety seat, suitable to his or her size and age. Choose a safety seat Children under the age of 12 should always ride in the back seat. Teenage/new drivers should be well-informed of safe driving practices.