An Analysis of a Railroad Classification Yard

Roger R. Crane, Frank B. Brown and Robert O. Blanchard
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Roger R. Crane: Westinghouse Air Brake Company, Pittsburgh, Pennsylvania
Frank B. Brown: Westinghouse Air Brake Company, Pittsburgh, Pennsylvania
Robert O. Blanchard: International Business Machines Corporation, New York, New York

Operations Research, 1955, vol. 3, issue 3, 262-271

Abstract: A freight car in the United States spends approximately two-thirds of its time stationary; a significant portion of this time in hump classification yards is spent in queues waiting to be inspected and classified into outbound trains. This paper describes the development of a model for these queues and the application of the Monte Carlo method to the analysis of these queues for a particular classification yard. An elementary form of feedback is included in the model. Using the model of yard operation, certain methods of improving yard operation are determined. Operations Research , ISSN 0030-364X, was published as Journal of the Operations Research Society of America from 1952 to 1955 under ISSN 0096-3984.

Date: 1955
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