This European Standard contains provisions for the measurement of performance of products for the road restraint systems@ under impact and impact severity levels@ and includes: ?? Test site data; ?? Definitions for road restraint systems; ?? Vehicle specification (including loading requirements) for vehicles used in the impact tests; ?? Instrumentation for the vehicles; ?? Calculation procedures and methods of recording crash impact data including impact severity levels; ?? VCDI. The modifications included in this standard are not a change of test criteria@ in the sense of EN 1317-5:2007+A1:2008@ ZA.3.