Road Signs
Master sign shapes and colours — triangles warn, circles command, rectangles inform.
Road and Traffic Signs
Introduction
Road signs, road markings and traffic signals provide essential information to help road users travel safely and efficiently.
They are designed to:
- Give instructions.
- Warn of hazards.
- Provide information.
- Regulate traffic flow.
- Improve road safety.
Why They Matter
Understanding road signs allows drivers to anticipate hazards, follow legal requirements, make safe decisions and avoid penalties and collisions.
Drivers must know both the meaning of road signs AND the actions required when they see them.
What it means
Road signs tell you the rules, give you warnings, and provide information. Shape and colour tell you the type at a glance.
Why it matters
Signs are the silent language of the road. Misreading one can mean going the wrong way down a one-way street or missing a low bridge.
Types of sign & marking
Warning signs (red triangles)
Warn you about a hazard ahead so you have time to slow down and prepare.
- Sharp bend ahead
- School crossing patrol
- Traffic queues likely
- Slippery road
Regulatory signs (red circles)
Tell you what you MUST NOT do. Breaking them risks fines, points or a crash.
- 30 mph speed limit
- No entry
- No overtaking
- No U-turn
Mandatory signs (blue circles)
Tell you what you MUST do.
- Turn left ahead
- Keep left
- Minimum speed
- Mini-roundabout — give way
Information signs (rectangles)
Give you guidance — blue = motorways, green = primary routes, white = local roads, brown = tourist.
- Hospital
- Motorway services
- Parking (P)
- Tourist attraction
Road markings
Lines on the road carry the same legal weight as signs.
- Single broken white line: you may cross if it is safe.
- Double white lines (solid your side): you must not cross or straddle.
- Single yellow line: parking restrictions apply at certain times.
- Double yellow lines: no waiting at any time.
- Yellow zig-zags (outside schools/hospitals): no stopping or parking.
- White zig-zags (zebra crossings): no parking and no overtaking the lead vehicle.
Common mistakes
- Confusing 'no entry' (red circle with white bar) with 'no through road'.
- Mixing up warning triangles with regulatory circles.
- Ignoring temporary yellow signs at roadworks — they override the permanent ones.
- Parking on zig-zag lines near a crossing or school.
Exam tips
- Circles give orders (red = prohibit, blue = mandatory).
- Triangles warn.
- Rectangles inform (blue motorways, green primary, white local, brown tourist).
- Octagon = STOP. The only octagonal sign on UK roads.
Real driving examples
- A red circle with '30' means a 30 mph limit. A white circle with a black diagonal line means the national speed limit applies (60 single, 70 dual/motorway).
- A blue circle with a white arrow means you MUST go that way.
Key facts to memorise
- Circles = orders, triangles = warnings, rectangles = information.
- Octagon = STOP (the only one).
- National speed limit sign: white circle with black diagonal line.
Test your knowledge
10 questions, instant feedback, scored to your dashboard.
Start Road Signs quiz