Yard reliability emerges as a problem of central importance to overall movement reliability. Detailed studies of three yards suggest that 10 to 20% of all cars miss their most appropriate outbound train connections, although performance varies not only between yards, but between inbound-outbound train pairs at the same yard. It is possible to express the probability of making a connection as an increasing function of the time available to make the connection, since the extra time offsets both arrival delays and congestion delays. The greatest cause of delay, however, is the cancellation of outbound trains or blocks. Extraordinary delays caused by rips and no-bills appear to be a relatively small problem.


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    Title :

    Studies in Railroad Operations and Economics. Volume 4. The Impact of Classification Yard Performance on Rail Trip Time Reliability


    Contributors:
    R. M. Reid (author) / J. D. O'Doherty (author) / J. M. Sussman (author) / A. S. Lang (author)

    Publication date :

    1972


    Size :

    72 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English