Railroad classification yard technology
Subtitle: evaluation of approaches to car presence detection
By: D.S. Wilson, N.J. Petersen ; U.S. Department of Transportation, Federal Railroad Administration, Office of Research and Development.
Contributors: Petersen, N. J.; United States. Federal Railroad Administration. Office of Research and Development.
Publisher: The Administration; National Technical Information Service [distributor]
Published: 1981
Place of publication: Washington, D.C; Springfield, Va
Language: eng
Number of pages: 56
Subjects: Hump yards.; Railroads -- Cars.; Detectors.
Notes: Cover title.

"Final report."

"March 1981."

"FRA/ORD-81/01."

Includes bibliographical references.