If in movement, the victim may be involved in a collision (usually not violent shocks) in the rear by another vehicle, and when the victim stops to see the damage is shackled and forced to give up your car.

When the victim moves towards the car, can be approached in many different reasons, from a request for directions, or just in a violent way (possibly with weapons).

When a person is stopped at a traffic light, usually the approach is always violent, either by the front window if it is open or the rear door. Carjacking is more likely to happen in places of little movement or at night.