What it means
Hazard Marker: Temporary barrier used to block off a road or lane during construction.
What to do
- Do not pass the barricade: the road or lane beyond it is closed.
- Follow the signed detour or merge into the open lane early.
- Slow down; workers and machinery may be just beyond the barrier.
In the K53 test
A barricade physically closes the way: driving around or between barricade boards is the tested offence, even if the closed section looks clear.
Where you will see it
Placed across the closed road or lane at the start of a works zone, often with flashing lamps at night.



