W330
At a glance
- Sign code
- W330
- Type
- Warning
- Official meaning
- Warning that the roadway narrows from the left side ahead.
What the Roadway narrows from the left side ahead sign means
Warns that the road ahead narrows on the left-hand side, with the right edge staying straight.
What you must do
Reduce speed and be aware the available width is reduced on the left; keep your position and watch for traffic moving in as the left side closes in.
Know the mistake this sign turns on
Full access adds the confusion Roadway narrows from the left side 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 W330 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.