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are placed onto one side of the rail with the derail pointed to the outside of the track. Then there is a part of the derail that is able to be tightened down to the rail and then secured with a locking mechanism. If the derail is left unlocked for any reason or does not have a locking mechanism deployed then the owner of the derail can face substantial fines if found by an
253:: On September 15, 1958 in Newark Bay, New Jersey, United States, when a Central Railroad of New Jersey (CNJ) morning commuter train, #3314, ran through a restricting and a stop signal, derailed, and slid off the open Newark Bay lift bridge. Although the derailer did work, it was insufficient as #3314 had such great speed that it was unable to stop in time.
273:, British Columbia, when 11 runaway rail cars full of logs crashed into them and their equipment while they were working on the line. The railcars had become uncoupled at the top of the hill and as they rolled out-of-control down the hill, they overpowered the derails which had been installed incorrectly and into rotting rail ties.
139:
The most common form is a wedge-shaped piece of steel which fits over the top of the rail. If a car or locomotive attempts to roll over it, the wheel flange is lifted over the rail to the outside, derailing it. When not in use, the derail folds away, leaving the rail unobstructed. It can be manually
203:
The third type of derail is the portable derail, and is used by railroad mechanical crews, as well as some industries. This is often used in conjunction with blue flag rules (meaning equipment on the track must not be moved, as workers are on or near the equipment) and is temporary in nature. They
72:
Although accidental derailment is damaging to equipment and track, and requires considerable time and expense to remedy, derails are used in situations where there is a risk of greater damage to equipment, injury or death if equipment is allowed to proceed past the derail point.
233:
The fourth type of derailer is the powered or motorized derailer, electronically powered through an actuator. This type of derailer can be controlled remotely from an external control panel or manually. It is commonly installed as a part of
259:: On May 15, 2001, CSX 8888, pulling a train of 47 cars including some loaded with hazardous chemicals, ran uncontrolled for two hours at up to 82 kilometers per hour (51 mph). A portable derail was used but failed.
140:
or remotely operated; in the former case it will have a lock applied to prevent it from being moved by unauthorized personnel. This type is common on North
American railroads.
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61:(or collision with anything present on the track, such as a person, or a train) by unauthorized movements of trains or unattended
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which directs the errant rolling stock away from the main line. This form is common throughout the UK, where it is called
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This article is about the device that intentionally causes a vehicle to derail. For the act of derailing itself, see
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454:. Vol. CCXLI. Washington, D.C.: Government Printing Office. p. 145 – via Google Books.
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Office of the
Federal Register, National Archives and Records Administration (October 1, 2002).
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The second type of derail is the "split rail" type. These are basically a complete or partial
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155:. It is set so that a train proceeding away from the camera will remain on the track.
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501:"Faulty coupling, rotted ties led to deadly train derailment in Woss, B.C.: report"
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541:(6). New York: Simmons-Boardman Publishing Co.: 203–209 – via Google Books.
435:. New York: Simmons-Boardman Publishing Co. p. 704 – via Google Books.
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incident: On April 20, 2017, three workers were killed in an accident on the
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552:. Washington, D.C.: Government Printing Office – via Google Books.
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524:. New York: Simmons-Boardman Publishing Co. – via google Books.
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is a device used to prevent fouling (blocking or compromising) of a
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238:, to ensure personnel safety in maintenance workshops and depots.
127:, oriented to protect track located off the bottom of the picture
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https://www.jonroma.net/media/rail/accident/usa/icc/3813-a.pdf
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229:
Powered derailer, Temple Mills, Eurostar
Maintenance Depot, UK
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27:
Device that intentionally derails trains due to safety reasons
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temporarily at an area where crews are working on a rail line
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431:. In Howson, E.T.; Lewis, E.R.; Kellenberger, K.E. (eds.).
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270:
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approaching a drawbridge, dead end, or similar hazard.
466:"Railway Safety & Track Repair Products | Aldon®"
452:
Official
Gazette of the United States Patent Office
246:Derails have failed on occasion. Examples include:
370:. US Patent & Trademark Office. Archived from
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100:at junctions or other crossings to protect the
69:the equipment as it rolls over or through it.
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531:"Use of Derails Varies Greatly on Railroads"
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414:
322:
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549:Code of Federal Regulations: Transportation
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391:
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123:A derail device installed on a siding at
518:Adams, Braman B.; Hitt, Rodney (1912) .
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182:
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80:
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386:
97:meet main lines or other through tracks
85:A derailed train car at a closed siding
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131:There are four basic forms of derail.
45:Hinged derail with automatic blue flag
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529:Kellenberger, K.E., ed. (June 1919).
445:
365:
446:Hayes, Stanley W. (August 7, 1917).
420:
24:
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427:Hayes Track Appliance Co. (1921).
236:Depot Personnel Protection Systems
25:
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34:. For the bicycle component, see
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366:Meyer, J. Joe (March 9, 1978).
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439:
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187:Split rail type derail on the
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1:
433:Maintenance of Way Cyclopedia
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251:1958 Newark Bay rail accident
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104:against unauthorized movement
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198:
10:
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788:Transfer table (traverser)
448:"Patent 1,235,971, Derail"
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29:
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776:ground-level power supply
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521:Railway Signal Dictionary
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89:Derails may be applied:
761:Railway electrification
535:Railway Signal Engineer
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65:. The device works by
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900:Platform screen doors
354:Adams & Hitt 1912
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125:Glen Haven, Wisconsin
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84:
44:
850:Anti-trespass panels
1078:Rail infrastructure
697:Classification yard
356:, pp. 195–197.
956:Motive power depot
910:Signalling control
470:Aldon Company, Inc
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783:Railway turntable
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415:Kellenberger 1919
368:"Portable derail"
323:Kellenberger 1919
308:Kellenberger 1919
267:Englewood Railway
263:Englewood Railway
257:CSX 8888 incident
18:Derail (railroad)
16:(Redirected from
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960:Railway workshop
676:Transition curve
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374:on May 22, 2018
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378:September 25,
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63:rolling stock
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935:Wayside horn
885:Interlocking
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865:Catch points
825:Water trough
727:Passing loop
707:Pocket track
692:Balloon loop
656:Ladder track
548:
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473:. Retrieved
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376:. Retrieved
372:the original
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289:Catch points
245:
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177:catch points
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102:interlocking
88:
77:Applications
71:
54:
50:
48:
860:Buffer stop
820:Water crane
732:Track gauge
671:Tie/Sleeper
397:49 CFR
336:49 CFR
284:Buffer stop
211:49 CFR
208:inspector (
171:trap points
153:JR Hokkaido
1033:Industrial
1017:Water stop
978:for trains
970:Roundhouse
944:Structures
930:Train stop
880:Guard rail
855:Block post
843:and safety
840:Signalling
771:third rail
744:Rail track
737:dual gauge
621:Baulk road
475:2023-03-07
295:References
160:Split rail
147:Derail on
59:rail track
36:Derailleur
32:Derailment
983:for goods
925:Tell-tale
756:Rail yard
722:Guide bar
702:Headshunt
685:Trackwork
651:Fishplate
641:Date nail
602:(history)
429:"Derails"
67:derailing
1072:Category
1038:Military
995:building
965:Platform
875:Derailer
793:Roll way
712:Junction
611:Axe ties
505:CBC News
278:See also
242:Failures
199:Portable
55:derailer
1048:station
1043:Private
990:Station
666:Profile
616:Ballast
339:213.357
221:Powered
214:218.109
189:A&M
95:sidings
810:Switch
798:Siding
598:Tracks
400:218.29
115:Design
93:where
51:derail
1026:Types
1005:ghost
1000:clock
974:Shed
588:Rail
135:Wedge
1053:list
1010:list
631:Cant
380:2006
271:Woss
217:.).
830:Wye
269:in
206:FRA
191:in
174:or
53:or
1074::
539:12
537:.
533:.
503:.
468:.
450:.
407:^
388:^
346:^
315:^
180:.
151:,
49:A
958:/
581:e
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567:v
507:.
478:.
382:.
38:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
