For use of the term in music, see Hocket. For use in electronics and computing, see Interlock (engineering).
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. In North America, a set of signalling appliances and tracks interlocked together are sometimes collectively referred to as an interlocking plant or just as an interlocking. An interlocking system is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe.
Interlocking is a safety measure designed to prevent signals and points/switches from being changed in an improper sequence. For example, interlocking would prevent a signal from being changed to indicate a diverging route, unless the corresponding points/switches had been changed first. In North America, the official railroad definition of interlocking is: "An arrangement of signals and signal appliances so interconnected that their movements must succeed each other in proper sequence".[1]
^Josserand, Peter; Forman, Harry Willard (1957). Rights of Trains (5th ed.). New York: Simmons-Boardman Publishing Corporation. p. 5. OCLC 221677266. Definitions.
and tracks interlocked together are sometimes collectively referred to as an interlocking plant or just as an interlocking. An interlocking system is designed...
formation of interlocking spurs is different from that behind meanders, which arise out of a combination of lateral erosion and deposition. Interlocking spurs...
per hour pass through the interlocking; and a total of 783 trains each weekday. In addition to Amtrak trains, the interlocking serves the Long Island Rail...
a variety of names including signal box (International and British), interlocking tower (North America) and signal cabin (some railways e.g., GCR). Currently...
intersectionality was coined by Kimberlé Crenshaw in 1989.: 385 She describes how interlocking systems of power affect those who are most marginalized in society. Activists...
company based in Billund, Denmark. Lego consists of variously coloured interlocking plastic bricks made of acrylonitrile butadiene styrene (ABS) that accompany...
Two or more corporations have interlocking directorates when they share members of their boards of directors or each shares directors with a third firm...
In cryptography, the interlock protocol, as described by Ron Rivest and Adi Shamir, is a protocol designed to frustrate eavesdropper attack against two...
"Fully interlocking" appears on jigsaw puzzle boxes, as referenced on the album cover. Like the preceding album Cordon Bleu, Fully Interlocking was produced...
World War I or the First World War (28 July 1914 – 11 November 1918) was a global conflict between two coalitions: the Allies and the Central Powers. Fighting...
Philadelphia Zoo, which gave the interlocking its name. The former Zoological Garden station was located next to the interlocking to serve visitors to the Zoo...
Solid State Interlocking (SSI) is the brand name of the first generation processor-based interlocking developed in the 1980s by British Rail's Research...
crossfire in Wiktionary, the free dictionary. A crossfire (also known as interlocking fire) is a military term for the siting of weapons (often automatic weapons...
The Interlock System is R. Talsorian Games' proprietary role-playing system. Interlock was a game system by R. Talsorian Games based on a simple system...
An ignition interlock device or breath alcohol ignition interlock device (IID or BAIID) is a breathalyzer for an individual's vehicle. It requires the...
imitate Lego brand bricks. Rasti is an Argentine toy interlocking brick. Tente is a Spanish toy interlocking brick. Construction toy§Categories Wikimedia Commons...
The United States Senate's Special Subcommittee to Investigate the Administration of the Internal Security Act and Other Internal Security Laws, 1951–77...
not equipped with fail-safe hatches, outboard pressure gauges, and an interlocking mechanism, which would have prevented the trunk from being opened while...
An Interlocking machine room (IMR) is a component of the London Underground signalling system. Interlocking is an arrangement of signal apparatus that...
of one leads straight into the next. Another configuration involves interlocking corkscrews, where two corkscrews are intertwined, with each crossing...
a variety of methods, interlocking tiles can only be manufactured on a large scale with a tile press. In many cases interlocking tile is designed to imitate...
A gladhand connector or gladhand coupler is an interlocking hose coupling fitted to hoses supplying pressurized air from a tractor unit to air brakes on...
a method of manufacturing fabric directly from fibers by entangling, interlocking the fibers by mechanical action (like rubbing and pressing) and often...
triad at Cornell University, the 5M model incorporates a diagram of 3 interlocking circles and one all-encompassing circle. The smaller circles are labeled...
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