Design of an Integrated Crash Safety Test Scenario: Rear-End Collision in SUBSEQUENCE of Emergency Braking

The integrated vehicle crash safety design provides longer pre-crash preparation time and design space for the in-crash occupant protection. However, the occupant’s out-of-position displacement caused by vehicle’s pre-crash emergency braking also poses challenges to the conventional restraint system. Despite the long-term promotion of integrated restraint patterns by the vehicle manufacturers, safety regulations and assessment protocols still basically focus on traditional standard crash scenarios. More integrated crash safety test scenarios and testing methods need to be developed. In this study, a sled test scenario representing a moderate rear-end collision in subsequence of emergency braking was designed and conducted. The bio-fidelity of the BioRID II ATD during the emergency braking phase is preliminarily discussed and validated through comparison with a volunteer test. The final forward out-of-position displacement of the BioRID II ATD falls within the range of volunteer displacements. The test results indicate that conducting this integrated rear-end collision scenario via sled test is feasible, and integrated restraint patterns, such as active pretensioning seatbelts, effectively reduces whiplash injury parameters, demonstrating the potential significance of carrying out this assessment scenario.