This International Standard specifies a sled test procedure for the evaluation of restraint systems in road vehicles by the simulation of frontal collisions. Its main purposes are to improve test methods for evaluating restraint system efficacy and harmonize existing test methods — especially to enable the comparison of results of tests carried out in different laboratories. It is applicable to restraint systems used within the structure of a passenger car as defined in ISO 3833. Deviations from its requirements are permitted, provided they have no significant effect on the results of the test.