<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>POTENTIAL ECONOMIES AND IMPROVEMENTS IN PERFORMANCE RESULTING FROM IMPROVEMENTS IN RAILROAD TERMINAL OPERATIONS</title>
      <link>https://trid.trb.org/View/69666</link>
      <description><![CDATA[The report presents the findings from four case studies to identify potential economies and improvements in performance that result from better terminal operations. Presented are methodologies employed to examine crew scheduling, car flow, hump yards, supporting activities, and costs. Specific findings on potential crew and car flow reductions from the four studies are used as a base point for estimating the national implications of implementation of short term, straight forward improvements. A brief examination of alternatives to railroad pickup and delivery is presented through these case studies.]]></description>
      <pubDate>Thu, 18 May 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/69666</guid>
    </item>
    <item>
      <title>STUDIES IN RAILROAD OPERATIONS AND ECONOMICS. VOLUME 14. MODELS FOR INVESTIGATING TRAIN CONNECTION RELIABILITY AT RAIL CLASSIFICATION YARDS</title>
      <link>https://trid.trb.org/View/57802</link>
      <description><![CDATA[This report presents models for predicting train connection performances at rail freight classification yards. The probability of making a connection is influenced by the time available to make the connection, dispatching policy, traffic volumes, priorities, train reliability, and overall yard performance. The report contains models of the probability of making a train connection that were calibrated for four Southern Railway hump yards. These models can be used with train schedule information to predict average yard times. In this report, several examples demonstrate ways to improve yard performances: avoiding tightly scheduled connections, revising train schedules, improving train reliability, reducing train and block cancellations, and adjusting classification policy as the traffic mix changes. Several of these are illustrated with data developed during the Southern Case Study. The report closes with recommendations for improving yard performance.]]></description>
      <pubDate>Tue, 07 Mar 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/57802</guid>
    </item>
    <item>
      <title>STUDIES IN RAILROAD OPERATIONS AND ECONOMICS. VOLUME 5. MODELS FOR INVESTIGATING RAIL TRIP TIME RELIABILITY</title>
      <link>https://trid.trb.org/View/29015</link>
      <description><![CDATA[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.]]></description>
      <pubDate>Mon, 18 Oct 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/29015</guid>
    </item>
    <item>
      <title>TERMINAL PERFORMANCE MEASUREMENT SYSTEMS</title>
      <link>https://trid.trb.org/View/31027</link>
      <description><![CDATA[This report summarizes and assesses the presentations made and the discussions held during a two-day seminar on the Measurement of Terminal Performance which was conducted under the auspices of the Labor/Management Task Force on Rail Transportation. The seminar was held in Chicago on May 21 and 22, 1975.  The written material submitted by the participants is reproduced in the Appendices.  The main part of the report consists of a comparison of the similarities and differences between the various systems, together with an assessment of the seminar and a list of conclusions and recommendations.  It was prepared by and is based on the interpretations and judgements of the St. Louis Project Team of the Task Force.  It does not necessarily reflect the opinions expressed by all of those attending the seminar.]]></description>
      <pubDate>Thu, 19 Feb 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/31027</guid>
    </item>
    <item>
      <title>BUFFALO, NEW YORK TERMINAL PLANNING STUDY</title>
      <link>https://trid.trb.org/View/28084</link>
      <description><![CDATA[This report studies the opportunities for increased efficiency in Buffalo terminal operations concentrating on the main carriers of Penn Central, Erie Lacawanna, and Lehigh Valley.  Analysis of existing records, time studies, observations, and interviews are used in the evaluation to determine labor effectiveness and utilization.  Procedures are developed for planning of terminal operations and of terminal management, but not procedures for implementation. Profit improvement opportunities are identified.  Primary emphasis is placed on ensuring integrity of flows of traffic affected by consolidation.  Includes an appendix of Yard Descriptions.]]></description>
      <pubDate>Wed, 05 Nov 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/28084</guid>
    </item>
    <item>
      <title>A NEW ANALYSIS OF RAILROAD YARD OPERATIONS</title>
      <link>https://trid.trb.org/View/12349</link>
      <description><![CDATA[Although several models of railroad yard performance have been developed in the past twenty years, none of them are in active use in the daily conduct of railroad freight transportation.  Three basic models are discussed.  Another model is developed using an eight-week sample of daily performance data.  Factor analysis is used as an analytic tool to discern the patterned relationships among the data. The final model developed by the authors is considerably different from previous models, and because of its strong base in empirical investigation it is believed that it is a more viable model than its predecessors.  (Author)]]></description>
      <pubDate>Fri, 23 May 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/12349</guid>
    </item>
    <item>
      <title>METHODOLOGY FOR INVESTIGATING THE POSSIBILITIES OF FORMING MULTI-GROUP GOODS TRAINS DURING THE FIRST SORTING PHASE AT HIGH-CAPACITY MARSHALLING YARDS</title>
      <link>https://trid.trb.org/View/25719</link>
      <description><![CDATA[In railway goods traffic, the standard of service is decisively influenced by the total travelling time of the payload.  That is why, from the outset, it has been the aim of marshalling techniques to reduce the time required for the forming and reclassifying of the trains.  By integrating the secondary sorting process with the train splitting process at the main hump, the formation of multi-group trains can be considerably accelerated.  With the secondary sorting method, here investigated irrespective of local conditions at any given marshalling yard, it is possible to derive considerable benefits from automatic train splitting operation also in respect of the formation of multi-group trains and to achieve a streamlined marshalling process.  The paper sets out to prove the feasibility of humping single wagons as well as rakes of wagons and to indicate the practical limits of the proposed optimum concept for the control of the marshalling equipment.  A method suggested in the paper can be used for calculating the necessary number and length of the sidings.  Apart from permitting the calculation of the time required for the marshalling operations, the method provides a basis for the economic comparison of the suggested "formation of multi-group trains during the first sorting phase" with other secondary sorting systems.  The paper is a synopsis of the key results of a dissertation with the same title, published in 1974 as No. 6 of the series of publications of the "Institute for Transport, Railway Matters and Traffic Protection" at Brunswick Technical University.]]></description>
      <pubDate>Thu, 06 Mar 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/25719</guid>
    </item>
    <item>
      <title>AUTOMATION SYSTEM AT TAKASAKI MARSHALLING YARD</title>
      <link>https://trid.trb.org/View/11453</link>
      <description><![CDATA[Automatic control procedure and control facilities for the cars thrown from the hump are described together with the electromagnetic type and the oil pressure unit type car retarders.  The computer system in the yard automation is of a duplex system, with the active system normally in working condition and the secondary system in standby condition.]]></description>
      <pubDate>Tue, 22 Jan 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/11453</guid>
    </item>
  </channel>
</rss>