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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

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

#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.  

#21-21 Update for tendering to manage cost volatility

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 all parties to capital works tenders that temporary arrangements will be made to the tendering process because of the current industry circumstances.  

#21-20 Road to Zero Speed and Infrastructure Programme Design Framework

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 a Design Framework has been introduced for use on all current and future corridors and sites that form part of Road to Zero Speed and Infrastructure Programme (SIP).

#21-18 Amendments to Contractor Health and Safety Expectations Guideline

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 amendments have been made to the Waka Kotahi NZ Transport Agency “Contractor health and safety expectations: guidance for supply chain partners” document.   The amended document will apply from the date of publication of this note.

#21-17 Update to the Asset Register in 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 staff and suppliers who update the Road Asset Maintenance Management (RAMM) database system that there has been some significant changes to the updating requirements.

#21-11 Amendment of SM014 Cost Estimation Manual

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

This note is to advise that an amendment has been made to the Waka Kotahi NZ Transport Agency (Waka Kotahi) Cost Estimation Manual SM014 (herein referred to as ‘SM014’).   This is a general update to align the manual with current business and cost estimation practice. The amended SM014 comes into effect from the date of publication of this note.

#21-15 Withdrawal of P23 performance-based specification for hotmix asphalt wearing course surfacing

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

Waka Kotahi NZ Transport Agency wishes to advise that Specification P23: 2005 performance-based specification for hotmix asphalt wearing course surfacing, and its accompanying Notes, have been withdrawn and must no longer be used in new Waka Kotahi contracts.   This change will be active from the date of publication of this notice.

#21-14 Infrastructure Delivery Resource Efficiency Policy

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 Infrastructure Delivery Resource Efficiency Policy for Waka Kotahi NZ Transport Agency has been introduced to be used on all of its future projects meeting the criteria set out in the policy.