STUDIES IN RAILROAD OPERATIONS AND ECONOMICS. VOLUME 2. RAIL TRIP TIME RELIABILITY: EVALUATION OF PERFORMANCE MEASURES AND ANALYSIS OF TRIP TIME DATA

After evaluating alternative measures within a logistics framework, this report recommends two measures of reliability, the maximum percentage of cars whose trip times fall in a consecutive two or three day period of the trip time distribution (the 2- or 3-day%) and the percentage of cars arriving after this period (the %-late). Nevertheless, a dialogue with shippers is necessary before the most appropriate measures can be determined for a specific situation. Using these measures, origin-to-destination (O-D) data for three railroads are analyzed to discover the nature of O-D reliability. Although yard classifications are found to affect reliability much more than does distance, detailed train information is necessary to predict the nature of this impact for a particular O-D pair. Reducing the number of classifications or improving yard operations will improve both reliability and mean trip times.

  • Supplemental Notes:
    • See also Volume 1, PB-244 118, and Volume 3, PB-244 120.
  • Corporate Authors:

    Massachusetts Institute of Technology

    Transportation Systems Division
    Cambridge, MA  United States  02139

    Federal Railroad Administration

    Office of Policy and Program Development, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Martland, C D
  • Publication Date: 1972-6

Media Info

  • Pagination: 110 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00092227
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: MIT-R72-37 Final Rpt., FRA/RPD-75/1.1
  • Contract Numbers: DOT-FR-10006
  • Files: NTIS, TRIS, USDOT
  • Created Date: Oct 18 1976 12:00AM