00391580

Component

http://onlinepubs.trb.org...s/trr/1983/927/927-002.pdf

https://scholar.google.co...Wong&publication_year=1983

A knowledge of freight car rolling resistance is critical in the design and operation of rail freight yards, yet published data on this subject have been scant in the past. In a project sponsored by the Transportation Systems Center and the Federal Railroad Administration, SRI International gathered data on freight car rollability at five rail yards. Complete data were obtained only from Hinkle Yard (Union Pacific) and DeWitt Yard (Consolidated Rail Corporation). In the empirical approach used, the distributional characteristics of rolling resistance were obtained for the two yards during the winter and the summer. These samples were combined and the results of a regression analysis exploring the underlying causal factors are presented. Generally, resistance was found to depend on those factors frequently cited in the literature, although some notable deviations were found.

Publication of this paper sponsored by Committee on Rail Freight Classification Terminal Design. 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.

01420434

pp 5-13

1983

Transportation Research Record

Railroad Classification Yard Workshop, 3rd, USA

0309036178

Print

Figures (9) ; References (1) ; Tables (5)

Curves (Geometry); Design; Freight cars; Journal bearings; Railroad cars; Railroad yards; Rolling resistance; Temperature; Train track dynamics; Wind

Design; Highways; Planning and Forecasting; Railroads; Terminals and Facilities; I21: Planning of Transport Infrastructure

TRIS, TRB

Jan 30 1985 12:00AM

• A COMPUTER FOR YOUR OLD HUMP YARD?
• A MODULAR APPROACH TO CLASSIFICATION YARD CONTROL
• CANADIAN NATIONAL RAILWAYS' TERMINAL INTERACTIVE MODEL (TRIM)
• CLASSIFICATION YARD COMPUTER CONTROL SYSTEMS
• DEVELOPMENTS IN THE APPLICATION OF THE DOWTY CONTINUOUS-CONTROL METHOD
• EFFECT OF MEASUREMENT ERRORS ON CAR ROLLABILITY DISTRIBUTION IN A YARD
• ENGINEERING DESIGN AND OPERATIONAL STUDY OF COYOTEPEC YARD
• INNOVATION IN CLASSIFICATION YARD TECHNOLOGY: PROCEEDINGS OF THE THIRD RAILROAD CLASSIFICATION YARD WORKSHOP. INTRODUCTION
• ON THE BEHAVIOR OF LONG CUTS WITH UNEVEN LOAD AND AXLE DISTRIBUTION IN CLASSIFICATION YARDS
• SEMIAUTOMATIC OPERATION FOR UPGRADING INTERMEDIATE-SIZED HUMP YARDS
• THE VR-IV RETARDER CONTROL SYSTEM
• TRIM SIMULATION OF CANADIAN NATIONAL RAILWAYS' THORNTON YARD