With the increase of motor vehicles in road traffic, traffic accidents also increased, which meant that the problem of researching traffic accidents on roads became as old as road traffic itself. The collected evidentiary materials on the traffic accidents themselves, as well as the testimony of the eyewitnesses of the traffic accidents, are of great importance for the resolution and analysis of the traffic accidents themselves, and according to the collected evidence, the material or criminal responsibility of the participants in the traffic accidents is established. Professional investigation of traffic accidents leads to the pattern and resolution of traffic accidents. By collecting the facts that are found at the scene of the traffic accident, we arrive at an easier discovery of the culprit for committing the traffic accident, and in this way the perpetrators of traffic accidents are liable to the prescribed material penalties, or in the case of criminal liability, to imprisonment. A professionally conducted investigation of the traffic accident, the facts that happened at the scene of the traffic accident, enables either other authorized persons, or judges, who were not present, to more easily pass judgments in favor of the injured parties or those responsible for traffic accidents.