Temporary sign colours

A background colour reserved for roadworks and diversions.

Also known as: Roadworks sign colour, Orange work zone sign

Road & transportStandard profile

Meanings

Temporary signs for roadworks use a reserved background colour — yellow in Britain and orange in the United States — so that a driver knows the instruction is temporary and overrides the permanent signing around it. The colour is doing the work that a date or a note would do badly.

Officially standardisedVerified fact
Marks a sign as temporary, using a reserved background colour so it can be distinguished at a glance from permanent signing.
Contexts: Road signage
Officially standardisedVerified fact
Takes precedence over the permanent signs it contradicts, which is why the distinction has to be visible from a distance.
Contexts: Road signage

Visual description

A rectangular or diamond panel filled with a bright reserved colour carrying black legend or pictogram.

Symmetry: none
Orientation: upright
Colours: yellow, orange, black

Confidence

IdentityHigh confidence: High confidence because the identity is documented in encyclopedic references, but multiple independent sources agree.
Historical originModerate confidence: Moderate confidence because the historical origin is documented in encyclopedic references, but multiple independent sources agree, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useHigh confidence: High confidence because the current use is documented in encyclopedic references, but multiple independent sources agree.
Visual matchHigh confidence: High confidence because the visual match is documented in encyclopedic references, but multiple independent sources agree.

Sources

Convention on Road Signs and Signals (Vienna, 8 November 1968), consolidated text
United Nations Economic Commission for Europe · retrieved 2026-07-31
A treaty binding only on its contracting parties. It prescribes sign categories, shapes and colours and permits national variants within them; it does not describe the signage of non-signatory states, notably the United States. Cited for category and design prescription, never for the traffic law of a particular country.
Comparison of European road signs
Wikipedia · retrieved 2026-08-23
Tertiary reference, cited for the conventional description of a mark, its usual name and where it is encountered. Where an issuing body defines the mark, that body is cited alongside and governs.
Manual on Uniform Traffic Control Devices for Streets and Highways
Federal Highway Administration · retrieved 2026-08-23
The United States traffic sign standard, published openly. The MUTCD's word-led signs are a deliberate departure from the pictogram-led Vienna Convention used across Europe, and the records say which system they describe.
Traffic Signs Manual
Department for Transport (United Kingdom) · retrieved 2026-08-23
The British traffic sign manual, published openly. Britain signed the Vienna Convention but implements several signs differently, which the records name where relevant.

Last reviewed 2026-08-23

Part of

Road signs across national systems

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Meanings

Officially standardisedVerified fact

Marks a sign as temporary, using a reserved background colour so it can be distinguished at a glance from permanent signing.

Contexts: Road signage

Officially standardisedVerified fact

Takes precedence over the permanent signs it contradicts, which is why the distinction has to be visible from a distance.

Contexts: Road signage

Confidence

IdentityHigh confidence: High confidence because the identity is documented in encyclopedic references, but multiple independent sources agree.
Historical originModerate confidence: Moderate confidence because the historical origin is documented in encyclopedic references, but multiple independent sources agree, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useHigh confidence: High confidence because the current use is documented in encyclopedic references, but multiple independent sources agree.
Visual matchHigh confidence: High confidence because the visual match is documented in encyclopedic references, but multiple independent sources agree.

Sources

Convention on Road Signs and Signals (Vienna, 8 November 1968), consolidated text
United Nations Economic Commission for Europe · retrieved 2026-07-31
A treaty binding only on its contracting parties. It prescribes sign categories, shapes and colours and permits national variants within them; it does not describe the signage of non-signatory states, notably the United States. Cited for category and design prescription, never for the traffic law of a particular country.
Comparison of European road signs
Wikipedia · retrieved 2026-08-23
Tertiary reference, cited for the conventional description of a mark, its usual name and where it is encountered. Where an issuing body defines the mark, that body is cited alongside and governs.
Manual on Uniform Traffic Control Devices for Streets and Highways
Federal Highway Administration · retrieved 2026-08-23
The United States traffic sign standard, published openly. The MUTCD's word-led signs are a deliberate departure from the pictogram-led Vienna Convention used across Europe, and the records say which system they describe.
Traffic Signs Manual
Department for Transport (United Kingdom) · retrieved 2026-08-23
The British traffic sign manual, published openly. Britain signed the Vienna Convention but implements several signs differently, which the records name where relevant.

Last reviewed 2026-08-23