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The company maintains the only industry-accepted version of the North American railroad industry's official code tables. Beginning as an information technology department within the Association of American Railroads (AAR), the company was established as a wholly owned, for-profit subsidiary of the AAR in 1999.
The Association of American Railroads (AAR) has defined the lower bound as 350 miles (560 km) of track or $40 million in annual operating revenue. [1] The Class I threshold is $250 million, adjusted for inflation since 1991. [ 2 ] ).
The ARA became the Association of American Railroads (AAR) in 1934; the Signal Division was renamed the Signal Section and the Telegraph and Telephone was renamed the Communications Section. The two sections merged in 1961 to become the Communications and Signal Division of the AAR, which has now been merged into AREMA.
This is a list of current shortline railroads (FRA Class III) in the United States. The reporting mark assigned by the Association of American Railroads (AAR) is listed for each entry. This transport-related list is incomplete ; you can help by adding missing items .
Association of American Railroads (AAR) An industry trade group representing primarily the major freight railroads of North America (Canada, Mexico and the United States) [24] Automatic equipment identification (AEI) (US) An automatic tracking system using RFID technology [25] [26] Auto Train (US)
Ann Arbor Railroad (1895-1976) → Ann Arbor Railroad (1988) A&A: Anniston and Atlantic Railroad: AAR: Association of American Railroads: AB: Akron Barberton Cluster Railway: ABB: Akron and Barberton Belt Railroad: ABCK: Alaska British Columbia Transportation Company: ABEC: Aberdeen Electric Company: ABL: Alameda Belt Line: ABM
The AAR wheel arrangement system is a method of classifying locomotive (or unit) wheel arrangements that was developed by the Association of American Railroads.Essentially a simplification of the European UIC classification, it is widely used in North America to describe diesel and electric locomotives (including third-rail electric locomotives).
The diagram from Beard's 1897 coupler patent [1]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [2] [3] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [1] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...