Using co-ordinated ramp signals

 Before arriving at the on-ramp, you’ll see a posted sign that lets you know whether the signals are operating.
 When the signals are operating, cars briefly stop at the lights to allow one vehicle per lane to enter the freeway on each green cycle.
 There are also signs posted several hundred metres before the on-ramp entrance, displaying estimated journey times so you can decide whether to continue with your planned route or seek an alternative.
 Letting one vehicle through at a time means each driver can accelerate to merging speed before joining the freeway traffic, which keeps the freeway moving smoothly.
What does it mean when the ramp signals are flashing yellow?

The ramp signals prevent congestion – mainly during peak periods or when there is an incident. They flash yellow when activated and again when they are deactivated, to let road users know of the change.

When switching on, the yellow lights flash for 10 seconds followed by four seconds of constant yellow then six seconds of red before switching to the normal green, yellow, red cycle.

When flashing yellow, you may proceed through the lights with caution, just like other traffic signals. If they change to constant yellow before you get to the stop line, stop and wait for the green light signals.

When the ramp signals are switching off, they flash yellow for ten seconds, during which you may proceed with caution.

Can road users be fined for running through the ‘red’ ramp signals?
Yes, the ramp signals work the same as traffic lights, only faster. That means anyone running the red light is subject to the same penalties.
Will I be notified about potential delays on the freeway before I enter the on-ramp?

Yes, you will. There are signs around 200 metres before the ramps and other signs where the ramp starts. As soon as our operators are alerted to any issues on the freeway, they will display appropriate messaging on these signs, letting drivers know what to expect.

Acknowledgement of country

The Government of Western Australia acknowledges the traditional custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders both past and present.

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