The National Transport University Bulletin

Abstract

The article considers systems in which the moments of receipt of the service request and the length of the services themselves, which are called queuing systems, are variable and random. Examples of QMS in the field of technical operation of road transport are: posts, lines, areas of repair shops, trucking companies, spare parts warehouses, fuel and lubrication dispensers of gas stations, etc. It is established that the initial flow of requirements depending on the characteristics of the QMS are generally serviced and non-serviced requirements. For road transport, it is mandatory to perform the necessary maintenance and repair work, ie the output flow, as a rule, consists of serviced requirements, ie serviceable cars. The classification of the queuing system according to various factors influencing the efficiency of the means of service and methods of intensification of production is described, current indicators, and the complexity of technical impacts, their dependence on the type, brand, modification of rolling stock, mileage from the beginning of operation, driver qualifications, operating conditions, the adopted maintenance and repair system, organization and management of engineering and technical service of the enterprise, state of production technical base, technology of execution and mechanization of works. With regard to the technical operation of cars, the most common are closed and open, single- and multi-channel SMO, with the same type and specialized service devices, with single- and multi-phase service, without losses or with a limit on the length of the queue or time spent on it. Absolute capacity depends on the following factors: the accepted structure of enterprises or specializations of divisions, the level of organization and management of maintenance and repair; technological level of works; provision of production technical base; level of mechanization of works; qualification and provision of repairmen, spare parts, materials. The estimation of mechanization of production processes is made, which is deduced on two indicators: level of mechanization of production processes; degree of mechanization of production processes. The article outlines the system aspects, criteria and strategies for improving the maintenance and repair of cars at the present stage. It is shown that the efficiency of maintenance and repair largely depends on the development and practical implementation of criteria and models for optimizing production processes. The results of the article can be used to model the operation of the service station as a queuing system in computer software products and will reveal the low efficiency of diagnosing the main systems of cars in a particular service station.

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