Guard rail

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(Railroads) a rail placed on the inside of a main rail, on bridges, at switches, etc., as a safeguard against derailment.

See also: Guard

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
Thereat arose an angry war of words; Guard railed at guard and blows were like to end it, For none was there to part us, each in turn Suspected, but the guilt brought home to none, From lack of evidence.
It was because of driving too fast that he lost control of the bus and started breaking when he hit the first guard rail. However, because of the breaks not being fully functional, the bus broke through the second guard rail and fell off the road.
The matatu was heading to Ravine from Eldoret town.The vehicle hit a guard rail and then rolled several times killing several passengers on the spot.
His official car was ripped apart by a guard rail on Thika Road, killing him instantly.
Welshman David Hartshorn was conducting a spinnaker drop with his crew, around 450 nautical miles off the coast of Portugal, when the guard rail became caught between his thumb and the sheet.
Police have not ruled out the possibility that Marios Chrysostomou, from Limassol had a heart attack while driving, which led him to lose control of the vehicle hitting a guard rail.
"Carfaro's products and capabilities are a great addition for FAIRWAY and supports a vision to create the dominant national brand for exterior guard rail, hand rail and metal works," said Greg Burkholder, President/CEO of FAIRWAY.
TEHRAN (FNA)- At least 39 people died after a tourist bus crashed through a guard rail in Southern Italy Sunday evening, local media reported.
Summary: Oregon: A Canada-bound bus crashed through a guard rail on an icy road in ...
A Prohibition Notice was served to the firm, preventing any further work at height and Clare Lallow Ltd complied by constructing a scaffolding and guard rail system.
Police spokesman Geir Riise said Monday the truck didn't have the right tires and was being towed up a serpentine mountain road in Leirfjord, some 700 kilometres (435 miles) north of Oslo, when it slid to the side and tipped over the guard rail.
SPRINGFIELD - A Springfield woman is in jail on hit-and-run and reckless driving charges after she allegedly drove across the Highway 126 median and crashed into a guard rail while intoxicated.