Australian signs use familiar shapes and colours, but a visitor needs to distinguish a legal instruction from a hazard warning or advisory speed. Temporary traffic control matters just as much as a permanent sign.
Regulatory signs
Stop, Give Way, speed limit, Keep Left, No Entry, prohibited turns, roundabouts and shared zones create legal requirements. A Stop sign requires a complete stop.
Give Way requires slowing and stopping when necessary, then applying the priority rule for the intersection.
Warnings and advisory speeds
Warning signs identify bends, merging or narrowing lanes, animals, unsealed surfaces, floodways and railway crossings. The hazard changes how you drive even when the posted maximum stays the same.
A regulatory speed sign is not the same as an advisory speed displayed for a bend or crest. Slow to the conditions and vehicle.
- Read the shape and colour
- Do not treat advisory speed as a target
- Expect animals near dusk
Roadworks and road trains
Temporary speed limits, traffic lights and traffic-controller directions at roadworks must be obeyed. Conditions can change between trips.
A yellow ROAD TRAIN or LONG VEHICLE panel attached to a truck identifies that vehicle. Give it space; do not mistake the panel for a roadside direction.
Signs you will not have seen elsewhere
Floodway markers with depth indicators appear on roads that cross watercourses, and the numbered posts show water depth. Never enter if the depth is unknown or the water is moving.
Grid signs warn of cattle grids, which can be rough at speed. Open range and stock warning signs indicate unfenced roads where animals may be on the carriageway at any time.
Road train and long vehicle signs on trucks identify combinations up to 53.5 metres. The sign is attached to the vehicle rather than being a roadside instruction, which confuses many visitors.
- Floodway posts show water depth
- Open range means unfenced stock
- Road train signs are on the truck
Speed signage and variable limits
Speed limits are in kilometres per hour and the default open road limit varies by state, from 100 in most to 110 on many highways and 130 on specified Northern Territory sections.
Variable message signs and electronic speed signs override posted limits and are common around roadworks, tunnels and school zones. Roadwork limits apply whether or not work is visibly happening.
Advisory speeds on yellow signs at corners are not legal limits but are set for a car in good conditions. In a loaded campervan or towing, the safe speed is lower again.
- Default open limits vary by state
- Electronic signs override posted limits
- Yellow advisory signs assume a car
Wildlife and fatigue signage
Animal warning signs indicating kangaroos, wombats, cassowaries or camels mark areas with genuine strike risk, concentrated around dawn and dusk. Treat them as a reason to reduce speed rather than decoration.
Driver reviver and rest area signs mark places to stop for fatigue, and on long routes the distance to the next one is often shown. Use them rather than pushing on.
Some remote routes carry signs stating the distance to the next fuel or water. Those are not suggestions; on the Nullarbor and through the outback they are the information your trip depends on.
- Animal signs mark real strike zones
- Rest area signs show the next distance
- Fuel distance signs are critical
Distance markers and location signs
Roadside distance markers and location reference signs are how you describe where you are to emergency services in remote areas. Noting the nearest one before making a call saves a great deal of time.
Many highways carry signs showing the distance to the next fuel, water or rest area. On outback routes these are planning information rather than trivia, and they are frequently the most useful signs on the road.
Spend ten minutes with a signs guide before the first driving day, because recognising an unfamiliar sign at speed is considerably harder than learning it in advance.
- Note markers before calling for help
- Fuel distance signs are planning data
- Location references guide responders
Places along the way
Check before you go
Rules and conditions change. Recheck the official source and the page for your exact park or campground before departure.
Take it on the road
Save the stops. Plan the whole trip.
Build an ordered route from saved places, calculate the distance and keep dates, notes and to-dos attached.