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  USA  02139

    Federal Railroad Administration

    Office of Policy and Program Development, 1200 New Jersey Avenue, SE
    Washington, DC  USA  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