derail

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derail

Chiefly US a device designed to make rolling stock or locomotives leave the rails to avoid a collision or accident

derail

[dē′rāl]
(engineering)
To cause a railroad car or engine to run off the rails.
A device to guide railway cars or engines off the tracks to avoid collision or other accident.
References in periodicals archive ?
Admitting its train was "traveling in excess of the allowable speed", Amtrak today, in its first legal filings in response to lawsuits resulting from the fatal May derailment in Philadelphia, also stated "it will not contest liability for compensatory damages proximately caused by the derailment of Train 188 on May 12, 2015.
The derailment suggested that new safety requirements for tank cars carrying flammable liquids are inadequate.
TORONTO -- A fiery oil train derailment in Ontario this month suggests new safety requirements for tank cars carrying flammable liquids are inadequate, Canada's transport safety board announced Monday.
The derailment on December 30 highlighted concerns about shipping crude by rail.
A series of track-caused derailments, beginning with an April 6, 2004, incident in Eugene in which six cars slid off a track, prompted federal officials to seek a safety compliance agreement with the short-line railroad.
The system includes four components designed to increase passenger safety - a connector that recedes into the train to help prevent derailments, structural changes designed to act like a car's bumper and strengthen the front of the car, and energy absorbers that create crush zones away from passenger areas.
This derailment was staged yesterday at Maynooth station, Co Kildare, as part of the Government Task Force on Emergency Planning.
When I was an apprentice, a teacher at drivers training school told me that speeding by 5 to 10 kilometers (per hour) is all right,'' said a driver in his 40s serving on the Fukuchiyama Line, on which the April 25 derailment took place.
Broken rail report: The broken rail that caused one of last month's two Tube train derailments could not have been detected by existing checks, an interim report said yesterday.
Poor track maintenance often leads to derailments in India.
Despite such threats as derailments, floods, vandalism and harsh weather, railcars are more secure against loss and contamination than any other method of shipment.
While knowledge shortfalls certainly contributed to derailments, they tended to be viewed as more easily correctable than other flaws.