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Sharing the road with oversize, pilot and escort vehicles

If a heavy vehicle is wider than 3.5m, a pilot or escort vehicle will precede or follow it along the road.

A pilot vehicle has yellow flashing lights and an OVERSIZE LOAD AHEAD sign on its roof. An escort vehicle has yellow flashing lights and yellow and white wigwag lights and an OVERSIZE LOAD AHEAD sign on its roof.

In general, the bigger the vehicle and its load, the more pilot or escort vehicles it will have. When you see a pilot or escort vehicle approaching with its warning lights flashing:

  • slow down
  • move over if necessary
  • respond to gestures by the driver of an escort vehicle
  • give way to the oversize vehicle.

If you are following an oversize vehicle, wait until the rear pilot vehicle operator signals you can overtake. Pass both pilot or escort vehicles and the oversize vehicle in one manoeuvre within the speed limit.

Last updated
24 August 2017