IN11.1
At a glance
- Sign code
- IN11.1
- Type
- Guidance
- Official meaning
- A supplementary plate giving an advisory speed. It hangs directly under a main sign and applies only to the hazard that sign is about.
What the Supplementary plate — advisory speed sign means
The recommended speed for whatever the sign above it is warning about. It is advice, not a new speed limit — but it is the speed that hazard can actually be taken at.
What you must do
Be down to the speed shown before you reach the hazard, not while you are in it. Brake on the straight, not in the bend.
Know the mistake this sign turns on
Full access adds the confusion Supplementary plate — advisory speed 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 IN11.1 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.