Understanding Australian Road Signs: A Guide for Learners

Updated October 2026

Road signs are designed to be understood at a glance. Once you know how shapes and colours work, you can read most signs instantly, even ones you have not seen before. Here is how Australian road signs are organised.

Regulatory signs: rules you must obey

Regulatory signs tell you what you must or must not do. Ignoring them is an offence.

• Stop signs (red octagon): stop completely at the line and give way to all traffic.
• Give way signs (red and white inverted triangle): slow down and give way to traffic on the road you are entering.
• Speed limit signs (black numbers in a red circle): the maximum speed allowed from that point.
• No entry, no right turn and no U-turn signs: usually a red circle, often with a red diagonal line.
• Keep left signs and lane arrows: show which way you must travel.

Warning signs: hazards ahead

Warning signs are usually yellow diamonds with black symbols. They warn you of curves, crests, merging traffic, pedestrians, school zones, animals, roundabouts and changes in road conditions. Many curve warnings come with an advisory speed sign showing a safe speed for the bend.

Guide signs: directions and information

• Green signs show directions and distances to towns and roads.
• Blue signs show services such as rest areas, fuel and hospitals.
• Brown signs show tourist attractions.

Temporary and roadwork signs

Orange signs warn of roadworks. Reduced speed limits at roadworks are enforceable, and workers may be on or near the road, so slow down and follow directions from traffic controllers.

School zones

School zone signs show a reduced speed limit during set times on school days. Some school zones also have flashing lights. Check the times shown on the sign, and remember that school zone hours and holidays differ between states and territories.

Road markings matter too

• A single unbroken centre line means you must not cross it to overtake.
• Broken lines can be crossed when it is safe and legal.
• Painted arrows show which way each lane may turn.
• Stop and give way lines show where to stop.

Signs you might see in only some places

Some signs are specific to particular states or cities, such as “right turn from left only” signs for hook turns in Melbourne, or road train warnings in the Northern Territory. Learn the signs used where you drive, and ask your instructor about anything unfamiliar.