W320
At a glance
- Sign code
- W320
- Type
- Warning
- Official meaning
- Warning of a height restriction ahead at the value indicated.
What the Height restriction sign means
Warns that a height limit is coming up, at the height shown on the sign.
What you must do
If your vehicle plus its load is taller than the height shown, do not proceed; find an alternative route. If unsure of your vehicle's height, do not risk it.
Know the mistake this sign turns on
Full access adds the confusion Height restriction 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 W320 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.