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The Transport Services Technical advice note (TAN) is a formal memo which keeps all relevant people up to date and aware of any new releases, interim acceptances, changes and updates to technical information, specifications, legislation, etc in relation to highway projects.

This is being used in place of the email memos you may have been receiving from the technical teams across the Transport Services group.

The Technical advice note series should be seen as the one source of truth associated with changes to our technical requirements.

It is sent to registered users, both internal and external to the NZ Transport Agency.

Subscribe to the Technical advice note - the one source of truth for highways information.

Search for TANs posted in 2019

Search for TANs posted in 2020

Search for TANs posted in 2021

Search for TANs posted in 2022

For further information contact hip.feedback@nzta.govt.nz.

#22-12 Guideline for preparing an environmental management plan

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

This note is to advise that the Guideline for preparing an environmental management plan (EMP) has been published.  This updated guideline replaces the 2014 Guideline for preparing an environmental and social management plan.

#22-11 Safe System audit guidelines

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

This note is to advise that the Safe System audit guidelines have been updated. The new document is available on the NZ Transport Agency Waka Kotahi website and should be used for all new works from the date of this note.

#22-10 National Seismic Hazard Model and what it means for our design standards

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

This note is to advise the sector, including local road controlling authorities, the position of Waka Kotahi is that the newly released National Seismic Hazard Model (NSHM) does not immediately affect Waka Kotahi issued design standards and guidance, including the Bridge Manual.

#22-07 Update to technical appendices for the State Highway Database Operations Manual (SM050)

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

This note is to advise that technical appendices three and four of the State Highway Database Operations Manual (SM050) have been updated and will need to be included in all maintenance contracts. The new requirements apply to our Network Outcomes Contracts (NOC) from 1 July 2022.

#22-06 Update to Z19 Taumata Taiao Environmental and Sustainability Standards – June 2022

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

This note is to advise that the Z19 Environmental and Social Responsibility Standard has been updated. The standard has been renamed to Z19 Taumata Taiao Environmental and Sustainability Standard (Taumata Taiao). The updated standard is available on the Waka Kotahi website and shall be used for all new works from now on.

#22-04 Release of Bridge manual 3rd edition amendment 4

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

This technical advice note is to advise that amendment 4 to the Waka Kotahi NZ Transport Agency Bridge manual 3rd edition and amendment 1 to the Bridge manual commentary, both published in May 2022, are available on the Waka Kotahi website for download.

#22-05 Update to M23 Specification & Guidelines for Road Safety Hardware

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

This note is to advise that M23 Specification & Guidelines for Road Safety Hardware has been updated. The new document M23:2022 applies from the date of this notice.

#22-03 Update to State Highway Construction Contract Proforma Manual (SM031) for COVID-19

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

This note is to advise of interim updates to the Waka Kotahi NZ Transport Agency State Highway Construction Contract Proforma Manual (SM031). Updated documents have been released to be used for all future procurement and are available for download from the Waka Kotahi website.

#22-02 Interim technical standards for the design of timber bridges

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

This note provides guidance on the technical standards that can be used for the design of a broad spectrum of timber bridges, including glue-laminated bridges. These technical standards are interim until Waka Kotahi NZ Transport Agency standards and guidance are updated. The interim standards apply from the date of this notice.

#22-01 New asphaltic surfacing material and density testing specifications

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

This note is to advise that there are two new specifications added to the roading toolbox.   The M32 asphalt specification sets out requirements for EME 2 High Modulus Asphalt, and the T23 density test method specification sets out a methodology for determining the density of pavement layers that can be used alongside existing methods.