The Signing System

The signing system explains how UK road and traffic signs are designed, grouped and used to give drivers, riders and pedestrians clear, consistent information. This page explains how the signing system works, how to recognise different sign shapes, colours and categories quickly, and links to every individual 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 is the signing system?

The signing system is the set of rules and standards used across the UK so that road signs are consistent in shape, colour and layout wherever you drive. It helps drivers and riders quickly recognise the type of sign (for example, a warning, regulatory or information sign) and understand what action they need to take, even before reading any words on the sign.

You'll usually see:

  • Warning signs - usually red-bordered triangles that alert you to hazards or changes in the road ahead.
  • Regulatory signs - mainly circles that tell you what you must or must not do, including speed limits and turn restrictions.
  • Information and direction signs - often rectangular, giving route guidance, local information and details about road layouts and facilities.

Understanding the signing system is essential if you regularly drive on unfamiliar roads, in busy towns and cities or on rural and high-speed routes - and it can appear throughout your DVSA driving theory test and hazard perception test.

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Essential parts of the signing system you need to know for the DVSA theory test

The DVSA driving theory test can include questions about every part of the signing system, from warning and regulatory signs to information, direction and road work signs.

When you revise with Driving Theory 4 All, you'll see how the signing system fits together, along with DVSA revision questions, hazard perception practice clips, and unlimited mock theory tests.

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Use this section to quickly find key examples from the signing system in the UK road and traffic sign system. Select a sign to open its dedicated page.

Directions on a primary route sign

Rectangular - green Shape type The signing system
View directions on a primary route sign

Directions on non-primary routes or wording plates for warning signs

Rectangular - white Shape type The signing system
View directions on non-primary routes or wording plates for warning signs

Give Way sign

Triangular Speed Traffic priority The signing system
View Give Way sign

Gives an order sign

Colourless shape Shape type The signing system
View gives an order sign

Gives an order for something you must do sign

Circular - blue with white writing Shape type The signing system
View gives an order for something you must do sign

Gives an order for something you must not do sign

Circular - white with a red border Shape type The signing system
View gives an order for something you must not do sign

Information about the road or directions sign

Colourless shape Shape type The signing system
View information about the road or directions sign

Information on a primary route or directions on a motorway sign

Rectangular - blue Shape type The signing system
View information on a primary route or directions on a motorway sign

Warning about a potential hazard ahead sign

Colourless shape Shape type The signing system
View warning about a potential hazard ahead sign

You must stop at the white line on the road sign

Octagonal Speed Shape type The signing system
View you must stop at the white line on the road sign

View our full UK road signs directory

Previous: Speed Limit SignsNext: Tidal Flow Lane Control Signs and Signals

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

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