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weigh right programme banner


At Waka Kotahi NZ Transport Agency, we’re aiming for a road system free of death and serious injury. We also want to enable a productive land transport system, which supports a level playing field for the heavy vehicle industry. The Weigh Right Programme is one way in which we are delivering this.

In the programme, roadside technology is installed and intelligent software developed to screen heavy vehicles and to direct potentially overweight vehicles into a commercial vehicle safety centre (CVSC, formerly weigh stations) for further inspection.

Vehicle screening involves weigh-in-motion or in-road scales, automatic number plate recognition cameras and electronic signs all working together to identify potentially overweight vehicles.

Targeting potentially overweight non-compliant vehicles can enable compliant heavy vehicles to continue their journey without interruption, and makes for a better use of resources and time.

It’s about safer roads, a level playing field for industry and smarter regulation.


Twelve CVSC sites will be rolled out in the Weigh Right Programme (three existing weigh stations will be upgraded and nine CVSCs will be built new). The weigh station at Glasnevin (north Canterbury) was upgraded and opened in January 2019 and the one at Paengaroa (Bay of Plenty) was opened in July 2020.

The locations of the CVSCs are on heavy-volume routes and cover 46% of the total freight kilometres travelled in New Zealand.

These sites are close to major centres, sea ports or significant highway junctions and at locations where it is difficult for heavy vehicles to avoid.

More information

Weigh Right Programme information sheet [PDF, 459 KB]
Weigh Right Programme questions and answers [PDF, 229 KB]

Contact us

Contact the Weigh Right Programme team:

Commercial vehicle safety centres

Mackays Crossing

The Mackays Crossing commercial vehicle safety centre (CVSC) will be a new build to serve heavy vehicles on route to Wellington when Transmission Gully opens.

A public open day is planned for 14 October 2020 at St Peter’s Hall, Paekākāriki from 1.30pm–8pm. If you are interested in learning more about the plans for Mackays Crossing and would like to share your feedback, please visit this drop-in session.

Feedback will also be open online from Wednesday, 14 October until 5pm on Friday, 6 November 2020.

Submit your feedback online(external link)Related documents

Mackays Crossing CVSC information boards [PDF, 1.6 MB]
Mackays Crossing CVSC FAQs [PDF, 454 KB]
Mackays Crossing interchange traffic (all vehicles) volume maps [PDF, 951 KB]