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Calder Freeway ramp signals

Photo showing Calder Freeway ramp signals at red with a prominent sign saying one vehicle per green per lane.

As a large volume of traffic on the southern part of the Tullamarine Freeway comes from the Calder Freeway, we have installed ramp signals at seven inbound entry ramps on the Calder Freeway to enable us to control the flow of traffic:

  • Kings Road
  • Melton Highway
  • Green Gully Road
  • Keilor Park Drive
  • M80 Ring Road
  • Moorna Drive
  • McNamara Avenue.

New inbound ramp signal locations on Calder Freeway

Location of the Calder Freeway's new ramp signals.

Ramp signals improve freeway traffic flow by carefully managing the number of vehicles entering the freeway to make merging easier, remove stop-start conditions and reduce congestion around entry ramps.

The ramp signals operate like traffic lights, but the light is only green for a short period of time, so that one car per lane is allowed through at a time. They will only operate when the road is busy or an incident has occurred, to manage the number of cars entering the freeway.