W331
At a glance
- Sign code
- W331
- Type
- Warning
- Official meaning
- Warning of an uneven roadway surface ahead.
What the Uneven road surface ahead sign means
Warns that the road surface ahead is uneven, with bumps or dips that can jolt the vehicle.
What you must do
Slow down before the rough section and keep a firm but relaxed hold on the steering wheel, as bumps can affect grip and steering.
Know the mistake this sign turns on
Full access adds the confusion Uneven road surface 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 W331 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.