First of all there are many risk factors for people of any age. The specific reasons why young people have a higher risk of being involved in a road traffic crash are highly complex. Young people are generally inexperienced road users. As with adolescent pedestrians or cyclists, the increased risk of a crash among young drivers can be mainly due to their inexperience on the roads. They may, for example, be less able to accurately perceive hazards, control the vehicle and make appropriate decisions on the road. Also social norms, including peer influence and the rebellion in youth culture can affect the behavior while acting on the road. For many young people, their friends (peers) are the most important people in their lives and are often also their primary source of behavioral norms. Teenagers can be led by what is considered “cool”, not necessarily what is safe. Peer pressure can mean that young people are more likely to behave in a risky manner on the road, both as novice drivers or riders, and as pedestrians.