The speed limit on Welshpool Road East is being reduced from 80 km/h to 70 km/h between Tonkin Highway and Canning Road.
The change follows a speed zoning review undertaken in accordance with Main Roads WA's Speed Zoning Policy and Safe System principles, which consider factors such as traffic volumes, road environment, crash history and roadside hazards.
The City of Kalamunda is aware there has been significant community interest in this change and understands that many residents and road users have questions about how the decision was made and why it has been implemented.
The information below provides further detail on the speed limit reduction, the approval process and who is responsible for setting speed limits in Western Australia.
The speed limit on Welshpool Road East has been reduced from 80 km/h to 70 km/h to improve road safety.
The decision was based on a review of the road environment, traffic volumes, crash history, roadside hazards, and Safe System principles.
Reducing travel speeds helps lower the likelihood and severity of crashes and provides a safer environment for all road users.
In Western Australia, Main Roads WA is the statutory authority responsible for approving speed limits on both State roads and local government roads.
Local governments may request a speed limit review, however any changes must be assessed and approved by Main Roads WA in accordance with the Speed Zoning Policy and Application Guidelines.
The speed limit change was approved following a technical assessment and endorsement by Council.
As this is an operational road safety measure approved by Main Roads WA, formal public consultation was not required before implementation.
As Welshpool Road East is a regional road that serves a broader community and carries significant traffic volumes, the speed limit was reviewed using the Safe System approach and principles.
This approach aims to ensure that travel speeds are appropriate for the road environment, reducing the likelihood and severity of crashes.
The speed limit reduction applies to both directions of Welshpool Road East.
The new 70 km/h speed limit has already been implemented on the eastbound carriageway. The westbound carriageway, is scheduled to be updated on 9 August 2026 as part of Main Roads WA's implementation program.
Main Roads WA has advised that the speed limit on the westbound carriageway will also be reduced to 70 km/h.
The westbound carriageway, is scheduled to be updated on 9 August 2026 as part of Main Roads WA's implementation program.
Yes. New regulatory speed limit signs have been installed at the commencement of the changed speed zone.
The City has also arranged for temporary "New Speed Limit" signs to be installed to help alert motorists during the transition period.
Drivers are expected to comply with the posted speed limit from the date the new signs are installed.
The City has requested that WA Police consider an education-focused approach during the initial implementation period; however, enforcement of speed limits remains entirely at the discretion of WA Police.
Enquiries should be directed to Main Roads WA Customer Service
Ph: 138 138E: enquiries@mainraods.wa.gov.au
If you have any questions or would like further information, please contact the City of Kalamunda:
Ph: (08) 9257 9999E: enquiries@kalamunda.wa.gov.au
Card 1
Card 2