The relationship between the automobile and road safety is not only to assess the safety of the vehicle alone, but also to study the interaction between vehicles and accidents. From this point of view, 4×4, SUV, vans and minivans are frequently criticized for obstructing the field of vision of other drivers that they cause. But it is above their danger in a collision with an automobile or light a vulnerable user alleged against them.In a collision between two vehicles, they must remove all of their kinetic energy in the form of mechanical energy (deformation of the vehicle) or kinetic (possible rebound of a vehicle). The kinetic energy is proportional to the mass, these heavy vehicles cause damage far above those of a lighter vehicle at the same speed. The dangerousness of this type of vehicle for vulnerable road users, especially pedestrians, is related to two aspects: first their road behavior lower (lower avoidance capability, longer braking distances) increases the risk of collision with a pedestrian in urban areas where speed is less than 60 km / h, and secondly the design of these vehicles is more dangerous for pedestrians in accidents in areas where speed is less than 60 km / h .This proven design problem is highlighted by the Euro NCAP impact with a pedestrian, and sometimes exacerbated by an incident of the questionable value, the bull bar. The owners of these cars are considered by some as threatening the lives of others, and making the choice of their own security to the detriment of the safety of other road users, idea contradicted by some accident statistics. In contrast, advocates of such vehicles argue that average behavior does not condemn all drivers; You can not judge a person guilty by default, especially riding in a vehicle approved. If there is insufficient, then it would be to look into the objectives that bind governments whose role is to ensure the safety of the population.
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