What it means
Road area reserved exclusively for construction vehicles. Usually found near building or civil engineering sites.
What to do
- Construction plant stream: slow, wide, and unpredictable swing.
- Keep distance; do not undertake a reversing tipper.
In the K53 test
Blue circle means command: the lane belongs to a construction vehicle while the sign applies. Using a reserved lane to jump a queue is the offence being tested.
Where you will see it
In areas where mining or industrial activity requires construction-vehicle routes.


