Speed zoning

To ensure a safe environment for all road users, it is necessary to continuously review and modify speed zones. 

We are responsible for speed zones on all roads across the state. 

Requests for change in speed zones on local roads need to be submitted to the local government, who will assess the request and submit it to us if they agree with the change. 

 Speed zone changes from the last six months:

RAC Safer Speeds Trial

The Safer Speeds Trial is a partnership between RAC and the Shire of Augusta Margaret River, with support from Main Roads.

The speed limit on approximately 550 local roads across the Shire of Augusta Margaret River will be reduced by the end of September 2025 as part of the trial, to help create safer roads, reduce the risk of serious injury or death and make town centres safer.

To find out more, and to view an interactive map of the speed zone changes, visit Safer Speeds Trial.

Speeding infringements

We set the speed limit on major roads and WA Police Force is responsible for enforcing these laws.

If you wish to dispute your speeding infringement, contact the Department of Transport.

To find out the speed limit on a metropolitan road, send us a copy of your infringement and we’ll have a look into it. If the infringement occurred on a regional road, contact our nearest regional office.

Be roadwork aware - slow down and take care

You can bet you will encounter roadworks and mobile traffic management on your travels - from speed and lane restrictions and possibly a modified road layout.

There are many safety hazards to both road users and construction workers within roadwork zones. It is important to follow the rules and be courteous, even when workers are not on-site as the unsealed or uneven road surface can be dangerous.

Always follow the signs – even if workers are not on-site, avoid ‘rubbernecking’ while driving and only overtake if it is safe.

We want everyone to get home safely to their families.


 Video courtesy of the Traffic Management Association of Australia. 

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.

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