The unreliability of the trip time of railroad freight shipments is often given as the reason for the railroads' loss of traffic to competing modes of transport. The report investigates various operating policies and practices affecting reliability through the use of two simulation models. A network model is developed which simulates the day-to-day movements of cars through a portion of rail network, while another model simulates the journey of a single car moving through a series of yards. The objectives of these models are similar; namely, to study the network effects on reliability of operating policies such as (a) holding outbound trains for more traffic, (b) cancelling outbound trains, (c) altering scheduled connection times at yards, and (d) running shorter more frequent trains between yards. Major conclusions are that railroad operating policies do have a substantial effect on car movement reliability.


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    Title :

    Studies in Railroad Operations and Economics. Volume 5. Models for Investigating Rail Trip Time Reliability


    Contributors:
    J. F. Folk (author)

    Publication date :

    1972


    Size :

    213 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English