Road transportation vehicles are motor vehicles used for transporting passengers and cargo. They use existing infrastructure to move around and dont require much investment in the construction of new roads. Passenger and cargo transport can not be performed with the same type of transporting vehicles as passengers expect comfort, safety and speed. Buses and passenger cars are the most common form of passenger transport, while for transport of cargo are used customized vehicles. Due to the constant increase in the number of traffic participants, it is important to increase the level of safety of the participants. Vehicles of high speed, comfort and safety are the most wanted, so all vehicles must be categorized. Road motor vehicles are divided into categories AM to H and vehicles and vehicles who must go thru procedure of approval fall into categories M to S. For each of these categories, the age of driving the vehicle, the engine power and the mass of the vehicle are clearly prescribed.