TRAFFIC UPDATES: Roads across the north island have been impacted by recent weather events. We’ll provide updates on our Journey Planner website as information becomes available. View our traffic map for road closures and delays(external link)

SCAM ALERTS: Report a phishing scam or learn about the latest phishing emails

CONTACT CENTRE WAIT TIMES: Our Contact Centre is currently experiencing significant wait times. View frequently asked questions

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CONTACT CENTRE WAIT TIMES: Our Contact Centre is currently experiencing significant wait times. View frequently asked questions

REGO AND RUC LABEL ERROR: There was a postage error with labels purchased on the 15 August 2022. Find out more

ROAD USER CHARGES (RUC) DISCOUNT: Find out more about the temporary RUC reduction scheme

ONLINE SERVICES: We are currently experiencing issues with all our online services at the moment. We are working to resolve the services as soon as possible. We apologise for any inconvenience caused.

COVID-19 SERVICES UPDATE: Information on Waka Kotahi services, extensions and more

ONLINE SERVICES: We currently have an issue with receiving some payments and are working to resolve this issue as quickly as possible. We apologise for any inconvenience.

EASTER WEEKEND – PLAN AHEAD: Heading away for the long weekend? Check our holiday journeys tool(external link)

SCAM ALERTS: Refund email and Vehicle licence (rego) renewal phishing emails

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Resources

Displaying 1 - 10 results of 93 for ""

Research Report 622 Best practice guide for pavement stabilisation

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

New Zealand pavement engineers, in collaboration with colleagues in South Africa and Australia, are recognised internationally as leaders in the use of stabilisation in highway, road, airport, port and industrial hardstand pavement applications.

Research Report 613 Seismic design and performance of high cut slopes

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

A review of the performance of slopes in historical earthquakes, a review of relevant literature describing recent research, consideration of New Zealand’s distinctive topography and seismicity, and limited numerical analyses have been carried out.

Research Report 612 Lessons to be learned from 15-year-old second-coat seals and reseals

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

The purpose of this research was to isolate and identify the reasons why some reseals have very long lives, and to identify which of these factors could economically be applied to reseals in future contracts, thus leading to a reduction in whole-of-l…

Research Report 618 Trialling best value delineation treatments for rural roads

Published:
Category: Activity management , Research programme , Research & reports | Audiences: General, Roading contractors

Providing a safe, comfortable, cost-effective visual environment to help drivers navigate rural roads requires a better understanding of the strengths and limitations of different delineation devices, materials and treatment configurations.

Research Report 615 Maintaining the effectiveness of audio tactile profiled roadmarkings for their full life cycle

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

This research considered maintenance of the audio, tactile and visual effects of ATP roadmarkings including for situations where the road surface was to be resealed while the ATP roadmarkings had remaining effective life.

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.

Research Report 602 Evaluation of shear connectors in composite bridges

Published:
Category: Activity management , Research programme , Research & reports | Audiences: Advice and assistance, General, Road controlling authorities

There are approximately 270 bridges on New Zealand’s state highway network and many more bridges on local roads with steel concrete composite superstructures.

Research Report 576 Flushing in chipseals

Published:
Category: Activity management , Research programme , Research & reports | Audience: Road traffic engineers & consultants

This report details research carried out from 2012 to 2015 into chipseal flushing.

Research Report 599 Review of the NZ Transport Agency treatment selection algorithm

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

The objective of this research, carried out between 2012 and 2015, was to improve the treatment selection algorithm (TSA).