This paper describes methodology of disturbances formation from the road surface to predict durability of suspension elements and the supporting system of light commercial vehicles. This methodology is designed on the basis of theoretical and experimental researches. Classification of asphalt concrete roads is formed taking into account deterioration of the coverage. It gives models of the road profiles representing public roads. The synthesis method of sequences of ordinates of road profiles is based on the use of probabilistic characteristics of microprofile. It shows the measuring equipment to determine the road sections with different states of coverage by the length of the routes selected for the research. It presents the results of the selection and justification of the range of modes of motion reflecting the real operating conditions of vehicles in urban environments. The results are obtained by carrying out statistical studies of the traffic intensity on the selected routes using a web mapping service.

The use of hydrostatic transmission driveline as a part of multi-wheeled all-terrain vehicles on ultralow pressure tires allows achieving the efficient power distribution for driving wheels depending on the conditions of vehicle-terrain interaction. This provides a significant increase in average speeds of vehicle movement in difficult road conditions (the maximum possible traction force is implemented by automatic maintaining the required level of wheel slip). At the same time, the minimum energy losses of wheel-soil interaction (improved fuel economy) and environmental safety of wheels, when operating on soft soil and vegetation, are provided. Installing the hydrostatic transmission allows to optimize layout scheme at the expense of the free selection of placement of transmission units. Application of integrated combination of active drive wheels, tires ultralow pressure, independent suspension system, the ability to control all the wheels according to any given algorithm (ability to control turning by all wheels) when driving on soft soil allows to effectively carry out the transportation operation with preservation of the ecology of the soil cover.

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