guard rail
US /ˈɡɑːrd reɪl/
UK /ˈɡɑːrd reɪl/

1.
vangrail, leuning
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.
De auto botste tegen de vangrail op de snelweg.
•
Pedestrians should stay behind the guard rail for safety.
Voetgangers moeten voor de veiligheid achter de vangrail blijven.