ECONOMIC ASPECTS OF SELECTING MEANS OF BUS TRANSPORT

The paper presents a method of selecting technical objects for performance of th e tasks received by the controlling subsystem. The investigation object, being the basis to illu strate considerations presented herein, is an operation and maintenance system of an urban bus transport in a selected agglomeration. Transportation of passengers by means o f bus transport is performed in the determ ined quantitative and territorial scope (specified by a schedule of transport task performance). When operating and maintaining buses various events occur, the results of which have an influence on the processes of using and servicing the buses, as well as on their technica l condition and economic effect of the work of the system in which they are used. The buses of an urban transport system, during the operation and maintenance process, may be in various maintenance states form ing the state space S. It is important, in the aspect of assuring continuity o f performance of transport tasks and the techn ical and economic efficiency achieved by the system, that as many vehicles as possible are in the sta te of serviceability and perform the transport tasks during the phase of a working cycle. It is affected by such factors as: the fea tures of the vehicles being operated and maintained, the type of the equipment and number of the service sites of the service station and of the units of technical emergency service, providing the units o f technical emergency service with diagnostic apparatuses, the nature of the transport tasks being performed, the metho d and scope of performance of the service processes and others. So, there is a possibility to have an influence on the system economic efficiency by selecting the buses with the use of the economic criterion