On the official sheet, prohibition signs are mostly circles with a red border. This page groups them by what they restrict: turns and entry, vehicles and loads, overtaking, and pedestrians and cyclists.
Parking and stopping bans have their own page: parking and stopping signs. Speed limits are on speed and motorway signs.
Turns and entry
- 417L Left turn prohibited
- 418 U-turn prohibited
No entry and vehicle bans
- 421 No entry
- 422 Except buses
- 423 All motor vehicles prohibited
- 424 Buses prohibited
- 425 Delivery vehicles over 10 tonnes prohibited
Weight, axle and size limits
- 426 Weight limit 40t
- 427 Axle weight limit 10t
- 428 Width limit 2m
- 429 Length limit 6m
- 430 Height limit 5m
Overtaking, pedestrians and cyclists
- 431 Overtaking prohibited
- 432 Overtaking by delivery vehicles prohibited
- 433 Pedestrians prohibited
- 434 Bicycles prohibited
- 435 Bicycles only
Horn and customs
- 439 Sounding horn prohibited
- 440 Stop for customs
Animals, lanes and police
- 446 Animals prohibited
- 448 Heavy vehicles prohibited from certain lanes
- 450 Police slow
- 451 Police accident
- 453 Bus and bicycle lane
More signs in this group
- No motorcycles
Frequently asked questions
What do the red circle signs mean?
On the official sheet, circles with a red border are the prohibition signs: they say what is not allowed.
Which signs set weight and size limits?
Signs 426 to 430 cover weight, axle weight, width, length and height limits.
Continue with other sign types
Information signs
The 300 series is the "services and places" family: signs that tell you where something is, which lane to use or that a road does not go through.
View signsPriority & direction signs
Signs in this group decide who goes first at a junction and which way you must go.
View signsParking & stopping signs
These signs answer one question: can you leave your car here, and for how long?
View signsSpeed & motorway signs
Maximum and minimum speed signs, and the signs that mark where a motorway starts and ends.
View signsWarning signs
Warning signs tell you what is coming up before you reach it, so you have time to slow down.
View signsRoadworks signs
Roadworks signs warn you about works, closures and diversions, and keep traffic moving safely around them.
View signs