W411
At a glance
- Sign code
- W411
- Type
- Warning
- Official meaning
- A hazard marker fitted to a boom or barricade that physically blocks or partly blocks the roadway.
What the Boom barricade sign means
A boom or barrier is placed across the road. The high-visibility red-and-white pattern marks the obstruction.
What you must do
Stop before the barrier and only proceed once it is opened or you are directed through.
Know the mistake this sign turns on
Full access adds the confusion Boom barricade 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 W411 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.