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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 that.

The programme is installing roadside technology and developing intelligent software to screen heavy vehicles and direct potentially overweight vehicles into a commercial vehicle safety centre (CVSC, formerly a weigh station) 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 enables compliant heavy vehicles to continue their journey without interruption, and is a better use of resources and time.

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


12 CVSCs sites will be rolled out in the Weigh Right Programme (four existing weigh stations will be upgraded and eight CVSC sites will be built new).

The weigh station at Glasnevin (north Canterbury) was upgraded and launched as a CVSC in January 2019 and one upgraded weigh station at Paengaroa (Bay of Plenty) was launched as a CVSC in July 2020.

Remaining CVSC are scheduled to be completed by end 2021.

The CVSC sites are on routes that cover 46% of the total freight kilometres travelled in New Zealand.

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

More information

Weigh Right Programme questions and answers [PDF, 223 KB]

Weigh Right Programme information sheet [PDF, 459 KB]

Contact us

Contact the Weigh Right Programme team: