Saving Lives Together

Merging & changing lanes

Merging and changing lanes

Where two lanes merge into one (i.e. lane lines end) the vehicle in front has the right of way.

If there are dual lanes, and the lane you are in ends, give way to the vehicles in the lane you are moving into.


  • Always use your indicator to signal your intentions to other drivers when merging;
  • Keep a safe distance between your vehicle and the vehicle in front of you and take turns to merge if there are long lines of merging traffic;
  • You need to match the legal speed of the road you’re merging into.
Failing to give way when merging$1002
Failing to give way when changing lanes$1003


Entering the freeway

The new dotted lines on freeways and highways mean similar rules to 'normal' lane changes now apply.

When joining traffic on the freeway, motorists should:

  • Get up to speed;
  • Indicate their intention to join freeway traffic; and
  • Move into the gap at the earliest and safest opportunity. Just like changing lanes.

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.