Warning

Road narrows from one side only

TW330

Illustrative image — The manual draws this code sharing one image with sibling code(s) W329, TW329, W330 — shown as printed, not isolated to TW330 alone.

Where

On any road.

Purpose

To warn that the road ahead narrows from the left (W330, TW330) or from the right-hand (W329, TW329) side.

Action

Slow down and adjust your position on the roadway.

Manual on Road Traffic Signs, page 30.