guard rail

US /ˈɡɑːrd reɪl/
UK /ˈɡɑːrd reɪl/
"guard rail" picture
1.

Leitplanke, Schutzgeländer

a barrier alongside a road, bridge, or other dangerous area to prevent vehicles or people from falling or straying

:
The car crashed into the guard rail on the highway.
Das Auto prallte gegen die Leitplanke auf der Autobahn.
Pedestrians should stay behind the guard rail for safety.
Fußgänger sollten zur Sicherheit hinter der Leitplanke bleiben.