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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.

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

Bylaw 2012-9 - NZ Transport Agency (speed limits on state highways) amendment bylaw March 2013.

Bylaw 2013-2 - NZ Transport Agency (speed limits on state highways) amendment bylaw May 2013.

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.

Bylaw 2013-3 - NZ Transport Agency (speed limits on state highways) amendment bylaw August 2013.

Road safety barrier accreditation scheme gets green light for safety.

These reports are the result of Road Efficiency Group’s (REG) annual assessment of the South Waikato District Council’s ONRC and asset management (AM) data quality. The 2017/18 ONRC data quality framework consists of 35 metrics and the asset management data quality framework consists of 31 metrics. These metrics interrogate the South Waikato District Council’s RAMM and Transport Investment Online (TIO) data for completeness, accuracy and timeliness. Each report includes a summary of the metric results by dimension and category plus for each metric it shows how the South Waikato District Council is positioned against what’s considered good (the expected standard) and where the sector sits. The metrics in the framework have been selected to test a cross section of the data underpinning the ONRC Performance Measure results and our decision-making processes. An individual metric result is intended to raise a red flag when not at the expected standard.

These reports are the result of Road Efficiency Group’s (REG) annual assessment of the Stratford District Council’s ONRC and asset management (AM) data quality. The 2017/18 ONRC data quality framework consists of 35 metrics and the asset management data quality framework consists of 31 metrics. These metrics interrogate the Stratford District Council’s RAMM and Transport Investment Online (TIO) data for completeness, accuracy and timeliness. Each report includes a summary of the metric results by dimension and category plus for each metric it shows how the Stratford District Council is positioned against what’s considered good (the expected standard) and where the sector sits. The metrics in the framework have been selected to test a cross section of the data underpinning the ONRC Performance Measure results and our decision-making processes. An individual metric result is intended to raise a red flag when not at the expected standard.