EN 1317 Part 5: Product requirements and evaluation of conformity for vehicle restraint systems.ENV 1317 Part 4: Performance classes, impact test acceptance criteria and test methods for terminals and transitions of safety barriers *.EN 1317 Part 3: Performance classes, impact test acceptance criteria and test methods for crash cushions.EN 1317 Part 2: Performance classes, impact test acceptance criteria and test methods for safety barriers and vehicle parapets.EN 1317 Part 1: Terminology and general criteria for test methods.In the same way, the containment level is chosen depending on the type of vehicle cicrculating on a specific road and according to the current risks (for example, falling off a bridge, entering pedestrian sidewalks or compromising the integrity of buildings).ĮN1317 is divided into different parts, each of which takes care of a different aspects or a different kind of product: The space needed for its smooth operation (how much space it ‘takes’ during the impact, the amount of deformation after the impact…)įor each situation, it is generally preferrable to use a system whose working width is lower than the available space (for example on the edge of a cliff), while at the same time, ensuring appropriate safety features.The “safety level” of the product under impact (through bio-mechanical indexes it is possible to rate the probability of injuries resulting from an impact with the product).The performance class of the product (for which vehicles it is tested and under which conditions).It’s important to point out that EN1317 do not states which barriers should be used in one or another situation, but it states which test a product should undergo to be in a certain performance class and what are the safety levels (ASI, THIV, etc.) and the classes of performance (based on different parameters).ĮN1317 defines levels of performance: each user should evaluate, every time, which features he needs when choosing a safety barrier those features are defined by the test outputs described in this norm, and they represent: The use of the CE marking coming from its part 5 is mandatory for each EU nation as from January 2011. EN 1317 is a European Norm etablished in 1998 that defines common testing and certification procedures for road restraintsystems.