The article considers the main phases of traffic injury (TI) described by A.A. Solokhin in 1968 and their modern application in forensic medical and automotive examination. TI is divided into four sequential phase: collision of vehicle with pedestrian, falling on hood, throwing to the ground and sliding on road surface. An additional intermediate phase occurs at high speed which leads to new injuries. Modern specialized literary sources confirm the data on the mechanisms of interaction between vehicle and pedestrian, focusing on the differences in damage depending on the speed and configuration of the vehicle. The researchers also discuss the consequences of braking and the impact of new technologies, such as SRS electronic units and specialized software, on the quality of automotive examination. The use of security cameras helps to establish the circumstances of an accident, that emphasizes the importance of a comprehensive approach to the analysis of TI. The application of video analysis and modeling programs allows to study more detailed the dynamics of interaction and to establish new mechanisms of TI.