The present study was carried out with the best crash test dummy currently available (Hybrid III) equipped with good instrumentation and the data were compared to established injury criteria. The biofidelity of the Hybrid III dummy neck is however questionable and this influences the validity of the results of this study. Results from recent studies, regarding sites and mechanisms of neck injuries implicate that neck collars, in order to have good effect, have to interfere with the forward translational and forward angular headneck motion early on in the crash event.