This survey describes results and information obtained from the reconstructions of an actual accident which occurred between a Renault 12 and a Chrysler 180, using dummies and, then, fresh unembalmed cadavers. All the experimental conditions and results obtained with regard to vehicles and to their occupants are given in detail, as a first stage. The problem due to the faithfulness of the reconstruction and the data gained on tolerance of impact of the human body are approached, as a second stage.