In complex transport means systems, in order to assure the possibility of appropriate carrying out of transport tasks it is necessary to maintain task serviceability status. It is achieved as a result of carrying out of service and repair processes at serviceability assurance subsystem posts. The possibility of appropriate carrying out of service and repair tasks assigned to the availability assurance subsystem depends to a large extent on the availability of the posts of the subsystem. This article presents the results of tests on the evaluation of availability of the serviceability assurance subsystem posts in transport means utilization system. An actual city bus transport system was used as test example. The presented results of the evaluation of the serviceability assurance subsystem posts were reached with the assumption that random variables describing the periods of time the posts remain available or unavailable have exponential and Erlang distributions. Source data necessary to determine the availability of the serviceability assurance subsystem posts were obtained at a selected actual city bus transport system basing on utilization data and the method of passive experiment in natural utilization conditions.
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