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Infrastructure procurement strategy

Published: | Category: Project & contract management , Manuals | Audiences: Road controlling authorities, Road traffic engineers & consultants

This Infrastructure procurement strategy sets out strategic objectives for infrastructure procurement, describes how Waka Kotahi will procure the current National Land Transport Programme (NLTP), and provides strategic guidance to our teams when designing and selecting procurement approaches. This strategy is currently under review to reflect new funding sources and investment programmes, and will be formally updated following the finalisation of the 2021 Government Policy Statement on Land Transport (GPS).

Cycle counting in New Zealand

Published: | Category: Walking & cycling , Planning, design, funding, building, maintenance of the transport network , Guidance for specialists | Audiences: Road controlling authorities, Walkers & cyclists

The report is a summary of a literature review of traffic-counting technology able to detect and monitor cycle traffic on a continuous basis and an internet-based survey of road controlling authorities (RCAs) and regional councils about their experience and interest in counting cycle traffic, either manually or automatically.

Research Report 574 Geosynthetics in basecourse stablisation

Published: | Category: Activity management , Research programme , Research & reports | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors

The application of geosynthetics (ie geogrids) for the stabilisation of basecourses prepared with a River Run rounded gravel aggregate was investigated. Reductions in the rate of rut formation by over 50% were observed when geogrids were included either at the basecourse/sub-base interface or at half-height of the basecourse. The rate of rut formation was reduced further if a square type geogrid was used in place of a triaxial type geogrid. It was found that the basecourse rutted rapidly if the surface was not confined, due to the lack of particle interlock and surface confining stress. If the surface was confined with a thin (ie < 40mm) asphalt layer to bind together the particles in the surface, then the aggregate provided significant support and reduced rutting by over 90%, even without the addition of geosynthetic stabilisation.

#15-14 Concrete barriers used to temporarily detain rockfall and slope debris

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

This TAN clarifies issues related to the utilisation of concrete barriers to temporarily detain rockfall/slope debris.

#16-02 Transport Agency Greenroads implementation policy

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

The Transport Agency is using Greenroads® as a tool to assess the sustainability performance of high-value state highway improvement projects. Greenroads assessment and certification applies to the detailed design and construction stage of a project.

#16-17 Road safety barrier accreditation scheme

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

Road safety barrier accreditation scheme gets green light for safety.

Asphalt surfacing treatment selection guidelines

Published: | Category: Pavement design , Manuals | Audience: Road controlling authorities

These guidelines for surfacing treatment selection have been written for asset managers, surfacing engineers and pavement designers. They aim to guide the reader in the engineering decision making and processes that need to occur in selecting a road surfacing treatment.

#15-01 Launch of the Technical advice note

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

Highways and Network Operations have launched the new Technical advice note series.

#15-13 Geotechnical testing and investigations

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

The NZ Transport Agency is currently participating in the preparation of an industry ground investigation specification which may be adopted in the future for NZ Transport Agency projects.

P46 stormwater specification

Published: | Category: Drainage , Maintenance , Specifications | Audiences: General, Road controlling authorities, Road traffic engineers & consultants, Roading contractors

This specification sets out the requirements for the design, construction and operation of all stormwater improvement projects. It is anticipated that the standard stormwater specification is a starting set of specifications and may be adapted to address local issues and the scope of the project.