What (who) is guardrail - definition
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![Sign in [[Niagara Falls, Ontario]], warning people not to climb over guard rail overlooking the [[Niagara River]].](https://commons.wikimedia.org/wiki/Special:FilePath/Sign in Niagara Falls, Ontario, warning people not to climb over guard rail.jpg?width=200 "Sign in [[Niagara Falls, Ontario]], warning people not to climb over guard rail overlooking the [[Niagara River]].")
![Sand filled barrels in Canada used as [[impact attenuator]]s.](https://commons.wikimedia.org/wiki/Special:FilePath/FitchBarrels2008.jpg?width=200 "Sand filled barrels in Canada used as [[impact attenuator]]s.")
![sp=us}}-high version of the Jersey barrier for deflecting [[automobile]]s and [[semi-trailer truck]]s](https://commons.wikimedia.org/wiki/Special:FilePath/Jersey barrier 2.png?width=200 "sp=us}}-high version of the Jersey barrier for deflecting [[automobile]]s and [[semi-trailer truck]]s")
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Wikipedia
Guard rail, guardrails, or protective guarding, in general, are a boundary feature and may be a means to prevent or deter access to dangerous or off-limits areas while allowing light and visibility in a greater way than a fence. Common shapes are flat, rounded edge, and tubular in horizontal railings, whereas tetraform spear-headed or ball-finialled are most common in vertical railings around homes. Park and garden railings commonly in metalworking feature swirls, leaves, plate metal areas and/or motifs particularly on and beside gates.
High security railings (particularly if in flat metal then a type of palisade) may instead feature jagged points and most metals are well-suited to anti-climb paint.
A handrail is less restrictive on its own than a guard rail and provides support.
Guardrails also apply in a technology context.
