Abstract
Purpose: for the definition of optimal switch point of crane operation between platforms, to perform task simulation of priority choice in car delivery service, the task should feature penalty consideration for excessive idle delivery at freight front. Methods: Methods of probability theory, queuing and mathematical statistics as well as expert assessments are used to find distribution. Results: Priority model for car delivery service has been worked out. The dependences of average cost of idle time of two car delivery under freight operations - from the moment of switch between deliveries at distribution of Erlang of kth order of freight operation implementation time and the distribution special case — exponential one at mixed priority of car delivery service - are determined. Practical significance: Rational distribution of crane operation is proposed allowing to reduce terminal's costs for penalties for excessive idle delivery at freight front.
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