What it means
Temporary Command: You MUST switch on your headlights immediately. The high-visibility background indicates a temporary requirement due to roadworks or specific hazards.
What to do
- Turn headlamps on now and keep them on through the zone.
- Expect dust, smoke, or spray that the backing board warns about.
In the K53 test
The command is headlamps on; the backing predicts poor visibility ahead. Parking lights do not satisfy the command.
Where you will see it
Especially before tunnels or in temporary low-visibility works zones; high-visibility backing board.
