Warning Signs

Warning signs alert drivers, riders and pedestrians to hazards, changes in the road layout and other dangers ahead on UK roads. This page explains what these warning signs mean, how to recognise them quickly, and links to every individual road sign in this category so you can revise them for your car theory test, motorcycle theory test, HGV / LGV theory test, PCV theory test, or ADI Part 1 theory test.

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What are warning signs?

Warning signs are part of the UK road and traffic sign system used to give drivers and riders early notice of hazards, bends, junctions, crossings and other changes in the road ahead. They help you spot danger in good time, adjust your speed and position, and plan your journey safely and confidently.

You'll usually see:

  • Junction and bend warning signs for sharp bends, crossroads, T-junctions and staggered junctions.
  • Road layout and hazard warning signs such as road narrows, hump bridges, level crossings, steep hills and traffic queues.
  • Vulnerable road user warning signs including pedestrians, children, cyclists, horses and animals in the road.

Understanding these warning signs is essential if you regularly drive on unfamiliar roads, in busy towns and cities or on rural routes - and they can all appear in your DVSA driving theory test and hazard perception test.

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Essential warning signs you need to know for the DVSA theory test

The DVSA driving theory test can include questions about warning signs.

When you revise with Driving Theory 4 All, you'll see these warning signs along with DVSA revision questions, hazard perception practice clips, and unlimited mock theory tests.

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Use this section to quickly find common warning signs in the UK road and traffic sign system. Select a sign to open its dedicated page.

Accompanied horses or ponies likely to be in or crossing the road warning sign

Triangular Animals Rural Warning signs
View accompanied horses or ponies likely to be in or crossing the road warning sign

Agricultural vehicles warning sign

Triangular Special vehicles Rural Warning signs
View agricultural vehicles warning sign

Area infected by animal disease warning sign

Rectangular - red Rural Warning signs
View area infected by animal disease warning sign

Bend to right warning sign

Triangular Bend in the road Warning signs
View bend to right warning sign

Block paving incorporated into a roundabout to indicate sharp deviation of route warning sign

Chevrons Junction Roundabout Warning signs
View block paving incorporated into a roundabout to indicate sharp deviation of route warning sign

Cattle warning sign

Triangular Animals Rural Warning signs
View cattle warning sign

Cattle grid with indication of bypass for horse-drawn vehicles and animals warning sign

Triangular Animals Road surface Rural Warning signs
View cattle grid with indication of bypass for horse-drawn vehicles and animals warning sign

Children ahead warning sign

Triangular Pedestrian Warning signs
View children ahead warning sign

Children going to or from a playground warning sign

Triangular Pedestrian Warning signs
View children going to or from a playground warning sign

Children going to or from school warning sign

Triangular Pedestrian School Warning signs
View children going to or from school warning sign

Children going to or from school with a patrol warning sign

Triangular Pedestrian School Warning signs
View children going to or from school with a patrol warning sign

Crossroads warning sign

Triangular Junction Warning signs
View crossroads warning sign

Disabled children ahead warning sign

Triangular Pedestrian Warning signs
View disabled children ahead warning sign

Disabled pedestrians warning sign

Triangular Pedestrian Warning signs
View disabled pedestrians warning sign

Distance and direction to hazard warning sign

Rectangular - white Distance to Warning signs
View distance and direction to hazard warning sign

Distance over which hazard extends warning sign

Rectangular - white Distance for Warning signs
View distance over which hazard extends warning sign

Distance to GIVE WAY line warning sign

Triangular Junction Speed Warning signs
View distance to GIVE WAY line warning sign

Distance to hazard warning sign

Rectangular - white Distance to Warning signs
View distance to hazard warning sign

Distance to STOP line warning sign

Triangular Junction Speed Warning signs
View distance to STOP line warning sign

Double bend first to the left warning sign

Triangular Bend in the road Warning signs
View double bend first to the left warning sign

End of bridge parapet, abutment wall, tunnel mouth etc. warning sign

Chevrons Bridge Tunnel Warning signs
View end of bridge parapet, abutment wall, tunnel mouth etc. warning sign

End of dual carriageway warning sign

Triangular Road width Road type Warning signs
View end of dual carriageway warning sign

Fire station ahead warning sign

Triangular Emergency services Warning signs
View fire station ahead warning sign

Frail pedestrians likely to cross warning sign

Triangular Pedestrian Warning signs
View frail pedestrians likely to cross warning sign

Gliders likely warning sign

Triangular Special vehicles Warning signs
View gliders likely warning sign

Hidden dip ahead warning sign

Triangular Visibility Warning signs
View hidden dip ahead warning sign

Horse-drawn vehicles likely to be in the road warning sign

Triangular Animals Rural Warning signs
View horse-drawn vehicles likely to be in the road warning sign

Hump bridge warning sign

Triangular Bridge Warning signs
View hump bridge warning sign

Junction on a bend warning sign

Triangular Junction Bend in the road Warning signs
View junction on a bend warning sign

Lights warning of children likely to be crossing the road on their way to or from school warning sign

Traffic lights School Warning signs
View lights warning of children likely to be crossing the road on their way to or from school warning sign

Low-flying aircraft or sudden aircraft noise warning sign

Triangular Special vehicles Warning signs
View low-flying aircraft or sudden aircraft noise warning sign

Low-flying helicopters or sudden helicopter noise warning sign

Triangular Special vehicles Warning signs
View low-flying helicopters or sudden helicopter noise warning sign

Migratory toad crossing warning sign

Triangular Animals Rural Warning signs
View migratory toad crossing warning sign

Opening or swing bridge warning sign

Triangular Water Bridge Warning signs
View opening or swing bridge warning sign

Pedestrians in road warning sign

Triangular Pedestrian Warning signs
View pedestrians in road warning sign

Pedestrians in road for distance shown warning sign

Triangular Pedestrian Warning signs
View pedestrians in road for distance shown warning sign

Pedestrians likely to be crossing a high-speed road where there is no formal crossing point warning sign

Triangular Pedestrian crossing Warning signs
View pedestrians likely to be crossing a high-speed road where there is no formal crossing point warning sign

Plate used with "roundabout" or "bend" signs warning sign

Rectangular - white Camber Road surface Warning signs
View plate used with "roundabout" or "bend" signs warning sign

Plate used with warning signs where a reduction in speed is necessary warning sign

Rectangular - red Speed Warning signs
View plate used with warning signs where a reduction in speed is necessary warning sign

Quayside or river bank warning sign

Triangular Water Warning signs
View quayside or river bank warning sign

Risk of falling or fallen rocks warning sign

Triangular Road surface Warning signs
View risk of falling or fallen rocks warning sign

Risk of ice warning sign

Triangular Weather Road surface Warning signs
View risk of ice warning sign

Risk of lorries overturning on bend to the left warning sign

Rectangular - white Camber Road surface Warning signs
View risk of lorries overturning on bend to the left warning sign

Road narrows on both sides warning sign

Triangular Road width Warning signs
View road narrows on both sides warning sign

Road narrows on right warning sign

Triangular Road width Warning signs
View road narrows on right warning sign

Roundabout warning sign

Triangular Junction Roundabout Warning signs
View roundabout warning sign

Sand pit ahead to be used if your brakes fail warning sign

Rectangular - blue Steep gradient Warning signs
View sand pit ahead to be used if your brakes fail warning sign

Shallow river crosses the road warning sign

Triangular Water Warning signs
View shallow river crosses the road warning sign

Sharp deviation of route to the left warning sign

Chevrons Bend in the road Warning signs
View sharp deviation of route to the left warning sign

Sheep warning sign

Triangular Animals Rural Warning signs
View sheep warning sign

Side road warning sign

Triangular Junction Warning signs
View side road warning sign

Side winds warning sign

Triangular Weather Warning signs
View side winds warning sign

Slippery road warning sign

Triangular Road surface Warning signs
View slippery road warning sign

Slow-moving military vehicles likely to be in or crossing the road warning sign

Triangular Special vehicles Warning signs
View slow-moving military vehicles likely to be in or crossing the road warning sign

Slow-moving vehicles for distance shown warning sign

Triangular Steep gradient Lorry Warning signs
View slow-moving vehicles for distance shown warning sign

Soft verges for distance shown warning sign

Triangular Parking Warning signs
View soft verges for distance shown warning sign

Staggered junction warning sign

Triangular Junction Warning signs
View staggered junction warning sign

Steep hill downwards warning sign

Triangular Steep gradient Warning signs
View steep hill downwards warning sign

Steep hill upwards warning sign

Triangular Steep gradient Warning signs
View steep hill upwards warning sign

Supervised cattle crossing warning sign

Triangular Animals Rural Warning signs
View supervised cattle crossing warning sign

Supervised cattle crossing ahead warning sign

Triangular Animals Rural Warning signs
View supervised cattle crossing ahead warning sign

T-junction warning sign

Triangular Junction Warning signs
View t-junction warning sign

Traffic merges from the left warning sign

Triangular Junction Warning signs
View traffic merges from the left warning sign

Traffic merges onto main carriageway warning sign

Triangular Junction Warning signs
View traffic merges onto main carriageway warning sign

Traffic queues likely ahead warning sign

Triangular Queues Car Warning signs
View traffic queues likely ahead warning sign

Traffic signals ahead warning sign

Triangular Junction Warning signs
View traffic signals ahead warning sign

Traffic signals that operate only at certain times warning sign

Triangular Junction Warning signs
View traffic signals that operate only at certain times warning sign

Try brakes after crossing a ford or before descending a steep hill warning sign

Triangular Water Warning signs
View try brakes after crossing a ford or before descending a steep hill warning sign

Tunnel warning sign

Triangular Tunnel Warning signs
View tunnel warning sign

Two-way traffic warning sign

Triangular Direction of traffic Road type Warning signs
View two-way traffic warning sign

Two-way traffic on route crossing ahead warning sign

Triangular Direction of traffic Road type Warning signs
View two-way traffic on route crossing ahead warning sign

Uneven road warning sign

Triangular Road surface Warning signs
View uneven road warning sign

Water course alongside road warning sign

Triangular Water Warning signs
View water course alongside road warning sign

Wild animals warning sign

Triangular Animals Rural Warning signs
View wild animals warning sign

Wild fowl warning sign

Triangular Animals Rural Warning signs
View wild fowl warning sign

Wild horses or ponies warning sign

Triangular Animals Rural Warning signs
View wild horses or ponies warning sign

Zebra crossing warning sign

Triangular Pedestrian crossing Warning signs
View zebra crossing warning sign

Ford warning sign

Triangular Water Warning signs
View ford warning sign

View our full UK road signs directory Previous: Tram Signs, Signals and Road Markings

Source: Department for Transport - Know Your Traffic Signs. Contains public sector information licensed under the Open Government Licence v3.0.

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