W301
At a glance
- Sign code
- W301
- Type
- Warning
- Official meaning
- Warning that a traffic signal (robot) controls the road ahead.
What the Traffic signal ahead sign means
A set of traffic lights is coming up, so be ready to stop if the light is against you.
What you must do
Ease off speed on approach, watch the signal, and be prepared to stop. If it has been green for a while, expect it to change and do not speed up to beat it.
Know the mistake this sign turns on
Full access adds the confusion Traffic signal 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 W301 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.