English edit

 
A warning triangle

Noun edit

warning triangle (plural warning triangles)

  1. (automotive) A triangle made of (usually) red reflective material, used to warn other road users of a broken-down vehicle.
    • 2007, The Official Highway Code, The Stationery Office, →ISBN, page 91:
      If your vehicle breaks down, [...] put a warning triangle on the road at least 45 metres (147 feet) behind your broken-down vehicle on the same side of the road.

Translations edit