W118
At a glance
- Sign code
- W118
- Type
- Warning
- Official meaning
- Warning that a dual roadway begins ahead and traffic directions become physically separated.
What the Dual-carriageway begins ahead sign means
The single road ahead splits into a dual carriageway, with separate lanes for each direction divided by a median.
What you must do
Keep left, expect the road to divide, and note that oncoming traffic will move onto a separate carriageway.
Know the mistake this sign turns on
Full access adds the confusion Dual-carriageway begins 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 W118 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.