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VDAM Rule 2016: information for road controlling authorities

This page provides information for road controlling authorities (RCAs) about what they need to know and how to work with the NZ Transport Agency to incorporate changes under the new rule.

Detailed information, including background, key contacts, bridge assessment guides and the specialist vehicle permitting process can be found in the RCA information pack [PDF, 355 KB]. The pack was updated on 21 March to reflect changes to the bridge capacity table [PDF, 202 KB].

What the Transport Agency seeks from all road controlling authorities.

The implementation of VDAM 2016 has four key pieces of information and actions required by RCAs:

Key rule change

Action required by RCAs

By when

Gross mass limit increases to 45/46 tonnes at 1 February 2017. Under permit unless using routes specified on new map (initially based on state highway approved routes).

Email the NZ Transport Agency to inform whether own 50MAX road network can be added to the new 45/46 tonne map.

Anytime up to 1 December 2017.
Ideal to open as many routes as possible early 2017.

Gross mass limits of 45/46 tonnes on specified vehicles become general access at 1 December 2017.

Conduct assessments of bridges and structures for the new mass limits to ensure road safety is maintained, and post any restrictions.

The NZ Transport Agency is providing support. Contact one of our assigned contractors for more information:

1 December 2017

Passenger service vehicles operating up to 9 tonne axle limits on public transport networks become general access from 1 December 2018.

Conduct assessments of bridges and structures on public transport networks for the new axle limits to ensure road safety is maintained. Post any restrictions.

The NZ Transport Agency is providing support. Contact one of our assigned contractors above for more information.

1 December 2018

Axle mass limits for specialist vehicles available under permit.

Understand new permit process and make changes to own permitting information and processes as required.

Support is available from:

From 1 February 2017

Helpful information

Below are helpful tools and links to support you in making decisions under the new rule:

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