English

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,p. 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,p. 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,p. 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,p. 230.

     "A diamond crossover provides each track with access to the entire yard."

   • 1995 — Institution of Civil Engineers (Great Britain), The Channel Tunnel, ISBN 072771922X,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 .

     "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

• scissors crossover

See also

• "Crossover" at Wikipedia