guardarraíl bedeutet auf Englisch

crash barrier▼(barrier on the side of a road)
noun
[UK: kræʃ ˈbæ.riə(r)] [US: ˈkræʃ ˈbæ.riər]

guardrail [guardrails]▼(rail set alongside a dangerous place)
noun
[UK: ˈɡɑː.dreɪl] [US: ˈɡɑːr.ˌdrel]