Features of functioning of the enterprises of car service at increase in seasonal demand for THAT and repair of motor vehicles are considered. For the analysis of their activity in the conditions of limited resources and a random flow of applications (requirements) the device of system of Queuing is applied

Keywords: Enterprise car service, the flow of requirements probability, criteria, costs, efficiency

Economic-probabilistic method assesses the feasibility of tactics for MAINTENANCE and operating time and technical condition for buses equipped with electronic control units. The scheme of determination of limit values of diagnostic parameters is proved. It is shown that the implementation of the STATE is appropriate when the economic costs associated with the cost of diagnosing and forecasting the technical condition of the buses are not decisive.

Keywords: strategy, tactics, method, parameter, maintenance, repair, cost, reliability, operation, technical condition