00714799

Component

http://onlinepubs.trb.org...trr/1995/1489/1489-001.pdf

https://scholar.google.co...ttle&publication_year=1995

Origin-to-destination (O-D) trip times and reliabilities of railroad freight cars as well as car cycle times of selected rail freight services during the period from 1990 to 1991 are documented. Trip times and reliabilities were obtained from samples of car movements obtained from the Association of American Railroad's Car Cycle Analysis System. All car cycles completed during a 12-month period were extracted for a 10% sample of boxcars, grain service covered hoppers, and double-stack intermodal cars. Cycle time information was obtained by using the entire sample for each car type. Trip times and reliabilities were obtained for the largest O-D car movements. Altogether, 477 general merchandise O-D movements, 102 unit train O-D movements, and all O-D movements over the 10 largest double-stack corridors were considered. The study covers movements throughout the United States and Canada. Clear differences in trip times and reliabilities were found for the three services. For general merchandise cars the average loaded trip time was 8.8 days and the average 2-day-percent (the maximum percentage of cars with trip times falling within a 48-hr window) was just under 50%. For unit grain train service in 1991 the average loaded trip time was 5.3 days and the average 2-day-percent was just over 60%. For double-stack train service in 1991 the average ramp-to-ramp trip time was just under 3 days in the long-haul markets (greater than 24,140 km (1,500 mi)) and just over 1 day for the short-haul markets; for both long- and short-haul services the 1-day-percent was about 90%. The average car cycle was 6.2 days for double-stack cars, 15.3 days for covered hopper cars in unit train service, 24.1 days for non-unit train covered hopper cars, and 26.9 days for boxcars.

This paper appears in Transportation Research Record No. 1489, Railroad Transportation Research. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01495777

English

p. 1-8

1995

Transportation Research Record

0309061555

Figures (4) ; References (11) ; Tables (11)

Box cars; Covered hopper cars; Freight service; Intermodal transportation; Origin and destination; Railroad cars; Railroads; Reliability; Travel time

Double stack container cars

North America

North America

Freight Transportation; Highways; Planning and Forecasting; Railroads

TRIS, TRB

Nov 30 1995 12:00AM

• BALTIMORE-WASHINGTON CORRIDOR MAGNETIC LEVITATION FEASIBILITY STUDY
• DEVELOPMENT OF NONCONVENTIONAL TIE AND TRACK STRUCTURE INSPECTION SYSTEMS
• EVALUATION OF RAILWAY SUBGRADE PROBLEMS
• EVALUATION OF SELECTED CRASHWORTHINESS STRATEGIES FOR PASSENGER TRAINS
• INSULATING A PRECAST CONCRETE CROSSING WITH ELASTOMERIC RAIL ENCLOSURE
• MODELING SINGLE-LINE TRAIN OPERATIONS
• OPERATIONS AND SAFETY CONSIDERATIONS IN HIGH-SPEED PASSENGER/FREIGHT TRAIN CORRIDORS
• STRATEGIC ENVIRONMENTAL ASSESSMENT OF EUROPEAN HIGH-SPEED TRAIN NETWORK