Saving Lives Together

Keeping left & overtaking

On single lane roads, you must drive as far to the left as practical (except motorcyclists). On multi-lane roads if the speed limit is 90km/h or more you must drive in the left lane. This same rule applies to any road where there is a ‘keep left unless overtaking’ sign.

On these roads you can only drive in the right hand lane if:

  • you’re turning right or making a U-turn;
  • you’re overtaking;
  • the left lane is a special purpose lane, e.g. bus lane, bicycle lane;
  • the left lane is a turning lane and you are going straight ahead;
  • you’re avoiding an obstruction;
  • the other lanes are congested with traffic.
Failing to keep left in a multi-lane road.$502

The information available on our website provides a simple interpretation of the law and is not intended to constitute legal advice. Full details of traffic offences and penalties are contained in the Road Traffic Code 2000.


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.

The Road Safety Commission is a portfolio within WA Police Force. It reports to the Minister for Road Safety, Hon. Michelle Roberts MLA.