Technical Work

Round Robin (TW1)

Influence of light vehicle models in the determination of accelerometric indices in EN 1317 (TW1)

Can the criteria dictated by the EN 1317 standard for the evaluation of vehicle occupant safety, defined in 1998, still be considered representative and in line with the evolution of vehicles and the safety criteria adopted by the automotive industry?

Examination of hundreds of crashes have shown that the accelerometer indices provided in EN 1317 are strongly influenced by the vehicle, which, moreover, the standard does not fully define, and that, contrary to what would be expected, these indices worsen in the case of tests and performed on more modern vehicles. Thus, according to EN 1317, modern vehicles would be less safe, with respect to occupants, than older ones.

By conducting about 20 specific crash tests on vehicles put on the market in the last 30 years and reviewing data from more than 100 crash tests, Intoroads is conducting a study to evaluate the influence of the vehicle in the parameters provided by the standard and the development of parameters independent of the mechanical characteristics of the vehicles

From the results obtained, we found that the type of vehicle has a significant impact on the ASI (Acceleration Severity Index) value provided by the regulations. However, due to the large number of tests performed, a parameter has been identified that is shown to be independent of the type of vehicle used.

The project will be completed by the end of June, and its results will be made available not only to all members, but also to standards bodies.