By changing the technical condition of road vehicles, the structure of the transport process also changes. That changes the state of a certain means of transport from the "working" one to the "defective" one and affects not only the availability and technical soundness to perform the task of transport, but also the entire transport process. It also reduces the possibility of meeting the requirements of demand, which ultimately causes financial losses. That is why analysis of the impact of negative factors such as fatigue, corrosion and friction is required, as their negative impact can be reduced by using proper and quality maintenance. There are also external factors and atmospheric climatic conditions that change throughout the year, thus reducing the operational competence of road vehicles.