W346
At a glance
- Sign code
- W346
- Type
- Warning
- Official meaning
- Warns of a hazard ahead by means of an intermittent flashing yellow light inside the warning triangle.
What the Emergency flashing light sign means
A warning triangle with a yellow light that actually flashes. It is added to conditions that are unusually hazardous, to give the warning sign beside it more emphasis.
What you must do
Slow down early and be ready to stop. It is normally mounted with another warning sign, so read that one for what the hazard actually is.
Know the mistake this sign turns on
Full access adds the confusion Emergency flashing light 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 W346 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 2026-08-25.