The sign often includes an illustration of a tow truck removing an illegally parked car to graphically show the consequences of not obeying the restriction.

At the same time the states and local councils can use signs that relate to particular situations in their areas, and you need to be alert to them. Even when local bodies erect signs they still follow the general theme of the national guidelines.

Parking signs are also designed to aid traffic flow and to give everyone fair access to a parking spot when they need it, albeit for a limited time.

In some cases, where lanes are changed at particular times of the day, for instance in peak hours, overhead warningsigns are used. A red cross is used to tell you the lane is closed, a green arrow tells you it is open to traffic.

They are diamond shaped, with a black graphic illustrating the hazard on a yellow background, and could warn you of a blind crest, a dip, a steep descent, a T-intersection, traffic lights, a tight curve, a narrow bridge, a road hump, a pedestrian crossing, or a tricky series of bends.

Speed advisory signs telling you of the maximum safe speed you can expect to negotiate a sign-posted curve are also commonly used.

They apply at specified times during the day, usually between 8 am and 9.30 am when students are arriving in the morning and 2.30 pm and 4 pm when they’re leaving at the end of the school day.

The signs denoting a transit lane are white with the words Transit Lane in black above an indicator of the number of occupants needed before you can use the transit lane in white on a red background.

Road signs in Australia are a state responsibility, but they conform to national guidelines, so that are in effect the same right across the country.

It is rectangular with the letter ‘S’ in black inside a red circle crossed by a diagonal red line on a white background. A red arrow will point to the affected area.

Street signs and place names are the most stolen signs in Australia, usually because they have a common connection to something else in the community. Signs including ‘Monaro’ are some of the most stolen.

In some case the parking ban only applies on certain days and at certain times, and these will be spelt out on the sign.

If there was an award for the most confusing road signs in Australia it world have to go to Melbourne’s so-called ‘HOOK TURNS’ at a number of intersections in the city CBD and require right turns to be made from the left lane so the flow of trams isn’t impeded through the intersection.

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Warning signs are also displayed at locations where traffic has to merge, say from three lanes to two, or two to one. The graphic will show an arrow/arrows continuing on where traffic is unaffected, and one coming to a dead end where you have to merge in to an adjacent lane.

To aid traffic flow on freeways or motorways at peak times lanes can be dedicated to cars carrying three or more occupants.

The signs indicating a particular turn is banned are rectangular with a black arrow in the direction of the banned turn inside a red circle on a white background.

They are mostly yellow and black, but could be orange and black, or could be a red triangle if it’s an incident on the road.

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Warning signs are there to warn you of an upcoming hazard requiring caution. When facing a warning sign, the message is clear, take care.

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Temporary warning signs are erected to warn drivers they are approaching a hazard that is currently requiring extra caution.

These signs are rectangular with a white background and a red box in which the particular use of the zone is show in white.

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Also included in the sign are the days and the time of day the transit lanes are used. It’s usually weekdays, either in the morning or afternoon.

A ‘ONE WAY’ sign is square with the words ONE WAY and an arrow in the direction of the permitted traffic flow in black on a white background with a black border.

To make a right turn at the intersections where HOOK TURNS are required you must drive into the intersection in the left lane indicating your intention to turn right and then come to a halt and wait until through traffic clears when you can safely complete the turn.

Parking signs are rectangular, either vertical or horizontal, with the time permitted to park, for instance 2P for parking permitted for two hours, in green on a white background.

In some cases turns are only banned at certain times of the day. When that is the case the sign also has the times when the turn in banned.

The fixed school zone signs are often accompanied by flashing speed signs, with the speed limit in white inside a flashing red circle.

In some cases the parking limitations only apply for certain times on particular days, and that information will also be shown on the sign.

The sign telling you that a roundabout is coming up is triangular in shape with three black arrows forming a circle in a clockwise direction inside a red triangle on a white background.

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It is a rectangular sign with a ‘P’ in black inside a red circle with a diagonal red line through the ‘P’ on a white background. It also has an arrow indicating the area of the parking ban.

It is rectangular, with the words ‘KEEP LEFT’ and an arrow pointing to the left in black on a white background with a black border.

They might point you in the right direction, tell you how far you are from your destination, tell you what road or highway you are on, and the name of the street you are seeking.

With the overall consistency of signs throughout the country we can feel confident to drive anywhere in the country and still recognise and understand the traffic signs in use.

For the safety of workers temporary signs indicating reduced speed limits are posted at sites where roadworks are taking place.

It is rectangular, with a white dash inside a red circle above the words ‘NO ENTRY’ in black on a white background with a black border.

HOOK TURNS are indicated by a rectangular sign with a directional arrow and the words ‘RIGHT TURN FROM LEFT ONLY’ in black on a white background with a black border.

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The ‘TWO WAY’ sign tells you that you are driving on a two-way road and traffic will be coming at you from the other direction in the right hand lane.

They’re white with the word CLEARWAY in black, as well as the letter ‘C’ in a red box, and the days and times the Clearway is in use.

Road signs are used to bring order to our roads so that we can go about our business in relative safety with minimum delay. Without them chaos would reign and our daily drive would be rather more dangerous.

Parking can also be banned in areas limited for business use, such as a LOADING ZONE, BUS ZONE, TAXI ZONE, or a zone that requires a permit.

In some situations turns are banned for safety and to facilitate traffic flow. They could be left turns, right turns, or U-turns.

School zone zones can be square or rectangular in shape with sections indicating the speed limit, which is shown in black inside a red circle on a white background, together with the times and days the speed limit applies, also black on a white background, and headed by a yellow ‘SCHOOL ZONE’ warning in black on a yellow background.

Do not enter a street or road when you see a ‘NO ENTRY’ sign. It is most likely a one-way street and you would be going against the traffic flow.