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:

School Zones and Children's Crossings Improvement Program

In April 2024, the Cook Government announced a $10 million investment to enable safety improvements at school warden crossings across Western Australia.

Main Roads has identified 141 crossings on roads with speeds of 50 km/h or higher situated outside school zones across the estate. To implement a 40 km/h speed limit, static speed signs will be installed at all these crossings by June 2025. On roads with speeds of 60 km/h or higher, these static signs will be progressively replaced with Electronic Speed Limit Signs (ESLS) by June 2028.

Unlike School Zone Area signs, which include “School Zone” and “End School Zone” markers, Traffic Warden Controlled Children’s Crossings are not in a School Zone and are marked with speed reinstatement signs without “End School Zone” indicators.

The 40 km/h limit is enforced during school days from 7:30 to 9:00 AM and 2:30 to 4:00 PM, aligning with school zone times. The hours in regional areas may vary.

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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