Speed Limit Speed limit signs have a distinctive red circle with a black number indicating the speed limit in kilometres per hour. Different speed limits and where they apply are described.see here

Give way signrules NSW

Give way signroad markings

Give Way When you are faced with a Give Way sign, you must slow down and, if necessary, stop your vehicle in order to Give Way. The rule about giving way at a Give Way sign is described (Example 19).

No Right/Left Turn Normal or illuminated signs may indicate that either right or left turns are prohibited. These apply when the sign is illuminated, or during the time stated on the sign, or at all times if no time is shown.

Give way signmeaning

Temporary Signs Temporary signs are erected to warn you of road works or other temporary hazards on the road, such as loose stones, detours and closed lanes.

Direction Signs Direction signs inform you of distances and/or directions to towns and major roads. They also direct you to services such as emergency telephones, caravan parks, off-street parking and information bays.

Stopsign Australia

Some warning signs on curves and bends have safe speed advice signs mounted below them to tell you the maximum safe speed at which the bend or group of bends can be negotiated under good driving conditions.

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Some temporary signs are regulatory signs - for example, these tell you what speed you must travel when passing road works. Speed limits are described, see also section on Speed Limits.

Warning Signs These signs warn you that you are approaching an unexpected, hazardous or unusual feature on the road ahead. They will help you to drive and ride with care - taking appropriate action when you see the signs will assist courtesy and safety on the roads.

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Stop When you are faced with a Stop sign, you must stop your vehicle at the stop line or, where there is no stop line, as near as practicable to but before entering the intersection. The rule about giving way at a Stop sign is described (Example 18 and 20).