During the last twenty years, there have been tremendous changes in racing equipment and in the development of track safety features. Very little has been scientifically analysed in predicting the efficacy of such instalations and little has been quantitively analysed once these changes have been adopted. Mechanical advances introduced by the racing community have greatly helped the development of the automobile;​ however, this community could well benefit from a more comprehensive, clinical and scientific accident-investigation methodology, so that more precise data and inferences could be obtained. This would help track-safety development and would yield further data concerning human tolerance and force-injury severity. The knowledge gained from certain crash dynamics during competition is discussed with respect to injury mechanisms. Crashworthiness is discussed in the context of modified highway vehicles and in the development of injuryreducing, full-racing vehicles.