What is BS EN 16303 about?  
BS EN 16303 defines the accuracy, credibility and confidence in the results of virtual crash tests to vehicle restraint systems through the definition of procedures for verification, validation and development of numerical models for roadside safety application. Finally, it defines a list of indications to ensure the competencies of an expert/organization in the domain of virtual testing.
Who is BS EN 16303 for? 
BS EN 16303 on road restraint systems is useful for: 
- Vehicle manufacturers and designers
- Automotive industry
- Quality control and testing departments
- Civil engineers
- Regulatory bodies
Why should you use BS EN 16303?  
A safety barrier lessens the impact of out-of-control automobiles leaving the road, by protecting people and roadside objects and by reducing the severity and consequences for those involved in the incident.
BS EN 16303 establishes a standard foundation for the use of virtual testing to simulate vehicle accidents against vehicle restraint systems such as safety barriers, crash cushions, terminals, and passive safety devices.
BS EN 16303 specifies the requirements for determining the degree to which numerical models of vehicle restraint systems and vehicles are an accurate depiction of the real world from the perspective of the model's intended usage.
BS EN 16303 can be used to assess the results of computational mechanics work and to ensure the reliability of virtual tests. It also includes a report template and incorporates specific content for general requirements for the competence of entities performing virtual testing.
BS EN 16303 also includes general guidelines based on experience for constructing numerical models of vehicle restraint systems and vehicles for virtual tests. 
As a user, you can rely on BS EN 16303 to assure the stability and robustness of the vehicle model, with the accuracy and precision of test results.
What’s changed since the last update?
BS EN 16303:2020 supersedes PD CEN/TR 16303‑1:2012, PD CEN/TR 16303‑2:2012, PD CEN/TR 16303‑3:2012 and PD CEN/TR 16303‑4:2012, which are withdrawn. In comparison to the previous Technical Reports, this document contains the following changes:
- Some symbols and abbreviations have been modified
- The roadmap for the validation of the numerical vehicle model has been updated and acceptance conditions have been provided
- The validation requirements for virtual testing against vehicle restraint systems have been updated
- The verification evaluation criteria for the finite element model have been updated
- The template of the report has been updated
