diamond crossover

Definition from Wiktionary, the free dictionary
Jump to navigation Jump to search

English

15. Diamond Crossover

Etymology

Named after the diamond crossing in its center.

Noun

diamond crossover (plural diamond crossovers)

  1. (rail transport) A superimposed pair of crossovers, resembling a letter X, permitting travel in either direction between a pair of parallel tracks.
    • 1916, Lee O. Kellogg (ed.), Details of Practical Mining[1], page 458:
      "In 15 is illustrated the diamond crossover, one of the many kinds in common use."
    • 1955, L.T.C. Rolt, Red for Danger: A History of Railway Accidents and Railway Safety Precautions[2], page 104:
      "It travelled on until the bogie fouled a diamond crossover at the north end of the station where derailment became complete."
    • 1956, Robert William Abbett, American Civil Engineering Practice[3], page 2:
      "Increased height is necessary when scales or a double hump lead with diamond crossover is placed on the descending slope of the hump."
    • 1958, S. Kip Farrington, Railroads of the Hour[4], page 230:
      "A diamond crossover provides each track with access to the entire yard."
    • 1995 — Institution of Civil Engineers (Great Britain), The Channel Tunnel, →ISBN,p. 20.
      "Each chamber contains a diamond crossover designed for 60 km/h running."
    • 2002 — Paul Jannotti, "Thinking outside the box on light rail: Hudson-Bergen project", Railway Track and Structures, August, 2002 [5].
      "The closed-deck ballasted bridge is double-tracked and opens up to a third track through a combination diamond-crossover and double-slip switch before it reaches the bulkhead on the Hoboken side."
    • 2004 — U.S. Federal Register, v. 69 #101, May 25, 2004, p. 29780.
      "The reason given for the proposed changes is that the crossover and switches were installed to replace a diamond crossover. The BNSF is taking their north connecting track out of service, so the control point with the crossover is no longer needed."
    • ~2005 — Robert Ferreira, "North Springs Branch", in "MARTA North Springs and Doraville Branches", http://world.nycsubway.org/us/atlanta/marta-northbranches.html.
      "In December, 1999 a new diamond crossover interlocking was placed into service at Medical Center."

Synonyms

See also