Saving Lives Together

Crossing continuous white lines

There are three types of single continuous (unbroken) lines:

1. Edge Lines

Are used to mark the edge of the road.

You can only cross over an edge line when entering or leaving the road or; passing a vehicle on the left or; turning right or making a U-turn; or stopping.

2. Lane Lines

Are used to define multiple lanes travelling in the same direction.

If the lane line is continuous, don’t cross the line to change lanes.

3. Centre/Dividing Lines

Are used to separate lanes travelling in different directions.

If the centre/dividing lines are continuous, do not cross that line unless you are turning right (i.e. to leaving or entering the road) or making a U-turn. The same applies if there is a continuous line on the left of a broken or dotted centre line.

Exception - IF you need to avoid an obstruction, you may cross the continuous centre line(s) if you have a clear view of any approaching traffic.

OffencePenaltyDemerits
Crossing the edge line of a road for any reason.$1000
Crossing a continuous line when changing lanes.$1002
Crossing a continuous centre line.$1503


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.