CURRENT POPULATION OF COUPLERS AND KNUCKLES IN FREIGHT SERVICE INCLUDING IDENTIFICATION OF RECLAIMED COUPLERS

This report contains the results of a two week coupler and knuckle population study conducted in three large Chicago classification yards operated by three different railroads. The sample included 864 freight and tank cars in regular interchange service in the Chicago area. A comparison of the types of cars included in the Chicago sample with the U.S. fleet indicates, for example, that the sample included significantly more than an average number of box cars and less than an average number of hopper cars. It is possible that the various types of cars have a different average age and see different kinds of service. This could affect the coupler and knuckle population. Therefore, samples at several other major geographic areas with a different mix of cars would seem desirable to establish the population with more reliability.

• Supplemental Notes:
  • An RPI-AAR Cooperative Project.
• Corporate Authors:

  Association of American Railroads Research Center

  3140 South Federal Street
  Chicago, IL  United States  60616
• Authors:
  • Morella, N A
  • COOK, R
• Publication Date: 1972-7

Media Info

• Features: Tables;
• Pagination: 43 p.

Subject/Index Terms

• TRT Terms: Couplers; Design; Field tests; Freight cars; Hand; Statistics; Surveys
• Old TRIS Terms: Freight car components; Knuckles
• Subject Areas: Data and Information Technology; Design; Railroads;

Filing Info

• Accession Number: 00080119
• Record Type: Publication
• Source Agency: Association of American Railroads
• Report/Paper Numbers: R-116 Tech. Rpt.
• Files: TRIS
• Created Date: Jan 16 1975 12:00AM