How are road restraint systems used?
Road Restraint Systems have different goals, according to the specific product:
Road safety barriers: Their goal is to prevent an errant vehicle from leaving the road way. This is extremely important when a driver has lost control of his vehcile and is about to impact an unprotected road side obstacle. Even more crucial is the role of road barriers used in the central reserve to prevent a vehicle from crossing it and, so, to avoid the possibility of a frontal impact on motorways or double carriage roads.
Crash cushions: crash cushions are collapsible devices, and their role is to avoid frontal crashes on 'sensitive' spots such as motorways exit, in order to reduce the consequences of an accident.
Terminals: terminals are the ending parts of a barrier; their role is to ensure that the ending point of a barrier does not become a hazard for road users that may impact them frontally.
Transition between 2 safety barriers: Transitions are products which connect two safety barriers, guaranteeing structural continuity and a correct passage from the performance of the first barrier to the ones of the second without creating black spots in those critical points.
Motorcycles restraint systems: those products aim at reducing the consequences of an accident when a motorcyclist slides out of the road.
Each country establishes in its national regulation which kind of protection should be used, according to the different situations that may be present on the road network (e.g. which barrier to use on bridges? Which minimum containment level in each situation?), and establishes the different installation and maintenance procedures together with any additional needs not covered by the norm.