Traffic light rules Australia


Traffic lights

Information about traffic lights and signals.


Traffic light showing red lightRed means stop. Wait behind the stop line.

Do not go through the intersection.


Traffic light showing yellow lightYellow (amber) means stop. You can enter the intersection if you are so close that sudden braking might cause a crash.


Traffic light showing green lightGreen means proceed through the intersection carefully.



Turning arrows at traffic lights

Some traffic lights have arrows to control traffic turning right or left.

A green arrow means you can only turn in that direction.

A red arrow means traffic waiting to turn must wait behind the stop line until the arrow turns green or disappears, even if there is no traffic on the road.

Traffic light showing red light with green right arrow lightYou must not go straight ahead or turn left. You may turn right.


Traffic light showing red light with red right arrow light You must not turn right but you can go straight ahead or turn left if the way is clear.


Traffic light showing red light with flashing amber right arrow light When the yellow (amber) arrow is flashing, you may proceed but you must give way to any pedestrian who is crossing the road into which you are turning.



Signs at traffic lights

Image showing stop sign with three black dots A STOP sign with three black dots is only seen at traffic lights. It means that if the lights are not working or are flashing yellow and you are approaching this sign, you must stop and give way to traffic as though you are at an intersection with stop signs.


Sign showing 'LEFT TURN ON RED PERMITTED AFTER STOPPING'This sign allows you to turn left on a red light after stopping. When turning left you must give way to all traffic approaching from the right.

Left turn on red light is only permitted at intersections where the sign has been placed.



B signals

B signals separate buses and other vehicles at some intersections with traffic lights for a safer, smoother traffic flow. To ensure B signals work properly never drive in the lanes marked buses only.

B signals are attached to the usual traffic lights. They show a white B on a black background (some traffic lights have a red, yellow and white B signal attached to them). Shortly before the usual traffic signals change to green, the B signal lights up white. All other vehicles stay while the buses may go. Buses may proceed in any direction unless signs or markings indicate otherwise. When the lights turn green other vehicles may move off.

Image showing red traffic light with white B light.
White B means buses only go

The red and yellow B signals (or the usual red and yellow traffic lights) tell bus drivers when to stop at the intersection.

Left image showing red only lights, right image showing green only lights.
Left image: Red only means all vehicles stop. Right image: Green only means all vehicles go.
Image showing green light with red B light
Red B means buses stay. Green means other vehicles go.

How can Sydney Traffic Lawyers help?

Our traffic lawyers will carefully consider your case, advise you on all your legal options, and recommend the best way forward. Call us now on 02 8059 7121 or 24/7 on 0420 998 650 to speak with one of our traffic lawyers.