Resources

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Standards and Guidelines Update – 2 October 2025

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

This newsletter provides key updates and a summary of recent revisions to existing standards and addition of new standards on the NZ Transport Agency Waka Kotahi (NZTA) register of Standards and Guidelines, and identifies NZTA standards that are curr…

Traffic signs performance based specification (P24)

Published:
Category: Signs , Maintenance , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

This specification sets out performance requirements for traffic sign manufacturers wishing to design and manufacture, and contractors wishing to install and maintain permanent traffic signs in New Zealand.

State highway professional services contract proforma manual (SM030)

Published:
Category: Project & contract management , Manuals | Audiences: Road traffic engineers & consultants, Roading contractors

A manual for use by NZ Transport Agency Waka Kotahi when preparing tender documents for professional services contracts.

Infrastructure risk rating manual

Published:
Category: Guidance for specialists | Audiences: Local & regional government, Road controlling authorities, Road traffic engineers & consultants, Roading contractors

The Infrastructure risk rating manual (IRR) is a proactive method for assessing road safety risk developed by NZ Transport Agency Waka Kotahi.

Standards and Guidelines Update – 30 June 2025

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

This newsletter provides key updates and a summary of recent revisions to existing standards and addition of new standards on the NZ Transport Agency Waka Kotahi (NZTA) register of Standards and Guidelines, and identifies NZTA standards that are curr…

Random selection of test sites within a lot (T29)

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

The T29 laboratory test method provides an independent means for the random identification and selection of test sites within a construction or pavement Lot.

Procedure for the estimation of the kerosene content of cutback bitumen (T09)

Published:
Category: Materials , Chipsealing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

NZTA T09 Procedure for the Procedure for the Estimation of the Kerosene Content of Cutback Bitumen sets out a procedure by which the kerosene content of cutback bitumen is estimated from the kinematic viscosity of a sample.

Colour indicator test for the presence of adhesion agent in chip seal binders (T30)

Published:
Category: Construction , Surfacing , Specifications | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors

The T30 laboratory test method is used to detect the presence of adhesion agent chemicals in cutback bitumen used as a binder for chip sealing.

Design of chip seals (P18)

Published:
Category: Construction , Chipsealing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

P18 Specification for the design of chip seals sets out a client-prescribed method for the design of a range of chip seal techniques used in New Zealand.