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The article enumerates the main problems encountered in creating main traction-transport vehicle (TTV) units as mechatronic systems. The authors review the results of theoretical and experimental studies of creating TTVs - automobiles of the future based on mechatronic systems. The analysis of the results shows that TTV progress is only possible based on a broad introduction of mechatronic modules into vehicle designs. This significantly increases the role of electronics and control systems. The paper shows that TTVs with mechatronic systems cannot be unambiguously described mathematically based on the existing theory of applied mechanics. A theory describing the laws governing the functioning both of individual TTV systems with their interrelationships and of the object as a whole should be developed.

The aim of this paper is to present the main principles of building the traction electric drive (TED) of the wheels of a heavy-duty road commercial vehicle.A high importance is given to the complex nature of designing and summing up the practical experience of making particular designs of the traction electric drive; as well as to the involved terms and definitions. The design of the AC TED with asynchronous motors and an AC generator looks most promising and having the best price/quality ratio.