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The tower and tracks at Deval interlocking, Des Plaines, Illinois, in 1993 In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings.
The Chicago and Western Indiana Railroad operated an extensive number of interlocking tower system on its system. From the north, towers were as follows: 12th Street tower, 15th Street tower, 16th Street tower, 21st Street tower, 40th Street tower, 47th Street tower, Ford Street tower (59th Street), 74th Street tower, 81st Street tower, Oakdale (later remote controlled by 81st Street), Pullman ...
Erie Railway and Pennsylvania Railroad, Horseheads Interlocking Tower Tower Horseheads: Chemung: New York NY-33: Erie Railway, Hornell Station 1971 Shop Hornell: Steuben: New York NY-34: Erie Railway, Hornell Erecting Shop 1971 Shop Hornell: Steuben: New York NY-35: Erie Railway, Corning Side Hill Cut 1971 Cut Corning: Steuben: New York NY-36
Harris Switch Tower, also known as HG Tower or Harris Tower, is an interlocking tower in Harrisburg, Pennsylvania in the United States. The tower was built in 1929 by the Pennsylvania Railroad and remained in operation until it was closed in 1991 by Amtrak .
Signalling control was originally exercised via a decentralised network of control points that were known by a variety of names including signal box (International and British), interlocking tower (North America) and signal cabin (some railways e.g., GCR).
E.J. and E. Griffith Interlocking Tower is a historic interlocking tower located at Griffith, Lake County, Indiana. It was built in 1924 by the Elgin, Joliet and Eastern Railway. It is a three-story, brick building measuring 25 feet long, 16 feet wide, and 30 feet tall. It has a concrete foundation and low pitched hipped roof.
Harold Interlocking and Sunnyside Yard in 1977. Harold Interlocking is a large railroad junction in New York City.The busiest rail junction in the United States, [1] it serves trains on Amtrak's Northeast Corridor and the Long Island Rail Road's Main Line and Port Washington Branch, which diverge at the junction.
The levers were grouped together in a building known as a "signal box" (UK and Australia) or "interlocking tower" (North America). In the UK multiple signal wires were grouped together, and in station areas were commonly routed beneath platform faces just above rail level.