What does a road restraint system do? 


A road restraint system is generally a collapsible or sliding structure that, through its deformation or displacement, absorbs part or all of the energy of a vehicle that hits it, and redirects and/or stops it safely for the driver and for the other road users.


The EN 1317 is the standard that establishes common European criteria to assess the performance of Road Restraint Systems.


It states which tests shall be undertaken to comply with the norm, how they must be performed and which criteria shall be assessed, in order to identify the most important features of the products and the performance it has in defined situations.