Australian advisory speed sign

A yellow sign giving a recommended rather than legal speed.

Also known as: Advisory speed, Recommended speed sign

Road & transportStandard profile

Meanings

An advisory speed on a yellow warning-coloured sign is a recommendation and not a limit, so exceeding it is not itself an offence. It is drawn in warning colours rather than in a red-ringed circle precisely to signal that difference.

Officially standardisedVerified fact
Recommends a speed for a hazard such as a bend, without setting a legal limit.
Contexts: Road signage
Common modern usageVerified fact
Is drawn in warning colours rather than in a prohibitory circle to mark that it is advice rather than a limit, though ignoring it can still support a charge of driving without due care.
Contexts: Road signage

Visual description

A yellow rectangle or diamond carrying a black numeral, mounted beneath a warning sign.

Symmetry: none
Orientation: upright
Colours: yellow, 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.
Australian Standard AS 1742 — Manual of uniform traffic control devices
Standards Australia / Austroads · retrieved 2026-08-23
The Australian and New Zealand traffic sign standard, a third system distinct from both the Vienna Convention and the MUTCD. Cited for sign forms only.

Last reviewed 2026-08-23

Part of

Road signs across national systems

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Meanings

Officially standardisedVerified fact

Recommends a speed for a hazard such as a bend, without setting a legal limit.

Contexts: Road signage

Common modern usageVerified fact

Is drawn in warning colours rather than in a prohibitory circle to mark that it is advice rather than a limit, though ignoring it can still support a charge of driving without due care.

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.
Australian Standard AS 1742 — Manual of uniform traffic control devices
Standards Australia / Austroads · retrieved 2026-08-23
The Australian and New Zealand traffic sign standard, a third system distinct from both the Vienna Convention and the MUTCD. Cited for sign forms only.

Last reviewed 2026-08-23