W319
At a glance
- Sign code
- W319
- Type
- Warning
- Official meaning
- Warning: a tunnel is ahead on the roadway.
What the Tunnel ahead sign means
There is a tunnel ahead where you may need your headlights on.
What you must do
Slow down and switch your headlights on, dipped, before you enter. Coming back out into bright daylight is where you see least, so keep your following distance.
Know the mistake this sign turns on
Full access adds the confusion Tunnel ahead is most often mistaken for and the hint for the test, on this sign and every other one — plus practice questions and timed mock papers. The practice sample and the readiness test are free.
See the free practice testSources
- Road Traffic Signs chart, National Department of TransportThe official chart. Sign W319 was checked against it, artwork and meaning, before being published here.
- National Road Traffic Regulations, 2000 — Schedule 1Where the prescribed meaning of each road traffic sign is set out.
Last updated 2026-08-23.