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Latest updates

We regularly consult with the sector to gain insights that help us to review and update the documents within our Standards and Guidelines Catalogue. Information on current consultations can be viewed in our public consultation hub, and further information on recently reviewed, updated or archived documents is shared with staff and suppliers in our regular Standards and Guidelines Technical Advice Note newsletter.

Publication consultation hub

Technical Advice Notes were previously published every time an individual operational policy document was ratified and updated in our standards catalogue. However, in 2024 we updated the format into a regular newsletter that not only lists recently updated documents, but also notifies future consultations and highlights upcoming plans in our forward work programme.

An archive of our previous Technical Advice Notes is below.

To search for a specific archived policy update if you can’t see it here, use the search filters in our NZTA resources library.

Search for Technical Advice Notes

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#20-10 Use of hollow bar ground anchors and soil nails

Published: | Category: Technical advice note | Audience: Road traffic engineers & consultants | Author: Geotechnics, Waka Kotahi NZ Transport Agency

This note is to advise that there is an issue with the use of hollow bar anchors and soil nails as an anchorage method and, as a result, this methodology must not be used unless its suitability for anchoring structural works as designed is demonstrable. The new requirement for hollow bar anchors and soil nails applies from the date of this notice for Waka Kotahi NZ Transport Agency, and may be used by any other road controlling authority.

#20-08 Use of GAP65 as a drainage medium to retaining and geotechnical structures

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Geotechnics team, Waka Kotahi NZ Transport Agency

This note is to advise that there is an issue with the use of GAP65 as a drainage material and, as a result, this material must not be used unless its suitability for the works as designed is demonstrated. The new requirement applies from the date of this notice.

#20-09 Use of sonic drilling in ground investigations

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Geotechnics team, Waka Kotahi NZ Transport Agency

This note is to advise that there is an issue with the use of sonic drilling as an investigation technique in the North Island and, as a result, this methodology must not be used unless its suitability for the works as designed is agreed with the road controlling authority. The new requirement applies from the date of this notice.

#20-01 Procedures for design and indirect tensile strength testing of modified and bound pavement materials

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Technical Services team, NZ Transport Agency

This note is to advise that NZ Transport Agency (NZTA) Specification T19:2020, Procedures for design and indirect tensile strength testing of modified and bound pavement materials, has been released for general use and is available on the Transport Agency’s website for download.

#20-02 Pilot specification for in-situ subgrade stabilisation

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Technical Services team, NZ Transport Agency

This note is to advise that the NZ Transport Agency (NZTA) Specification B/9P:2020, In-situ subgrade stabilisation, has been released for use on agreed pilot projects and is available for download from the Transport Agency’s website.

#20-03 Changes to the physical works prequalification pack

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Procurement Services team, NZ Transport Agency

This notice advises that the latest changes to the Prequalification for physical works information pack are available to assist suppliers and project managers to more easily apply the prequalification protocols. This will enable a more consistent and expedited procurement process.

#19-16 Electrical issues identified in signal controllers

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Transport Services

This notice advises that the NZ Transport Agency has recently become aware of electrical issues in some of the traffic signals controllers, managed within one of our maintenance contracts.  

#19-14 SM030 Professional Services Contract Proforma Manual update Amendment 9

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: System Design & Delivery

This note confirms that amendment 9 of the NZ Transport Agency’s SM030 Professional Services Contract Proforma Manual published in October 2019 is available on the Transport Agency’s website for download. This amendment to the SM030 Manual shall be implemented immediately for future contracts.

#19-11 Update to NZTA Guide to assessing air quality impacts from state highway projects

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Safe and Sustainable Transport team

The purpose of this note is to advise project managers that there has been an update to the Guide to assessing air quality impacts from state highway projects.

#19-12 Update to NZTA State highway construction and maintenance noise and vibration guide

Published: | Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors | Author: Safe and Sustainable Transport team

The purpose of this note is to advise project and network managers that there has been an update to the State highway construction and maintenance noise and vibration guide.
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