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  • Reference: 559
  • ISBN: 978-0-478-41984-9
  • Author: Dave Smith and Dale Harris Abley Transportation Consultants Limited | Sara Clarke and Pulith Kapugama URS New Zealand Limited

Digital data from emerging sources such as GPS, Bluetooth and weigh-in-motion is currently captured in New Zealand for a range of traffic monitoring purposes. This research project was undertaken to provide guidance on what capacity exists to assess the performance of the state highway road network using these digital data sources.

This report summarises the background research, model...

2

Category: Research & reports

Research Report 560 - Reduced bitumen application rates using bitumen emulsions

Published: Nov 2014
  • Reference: 560
  • ISBN: 978-0-478-41985-6
  • Author: SA Bagshaw Opus Research Ltd

This research project investigated the differences in cohesive energies of model chipseal samples prepared from bitumen emulsions, the base binders, and the kerosene cutback base binder. The aim was to determine if it was possible to construct chipseals by using a lower residual bitumen application rate whilst still retaining adequate performance. Analysis of the NZTA RAMM (Road Asset and...

  • Also known as: 557
  • ISBN: ISBN: 978-0-478-41982-5
  • Author: GHD Limited

With increasing demand for travel and limited opportunities for increasing capacity within urban areas there is increasing pressure to make more effective use of the capacity available. One approach is the introduction of special vehicle lanes where particular classes of traffic, typically buses and high occupancy vehicles are permitted to use the lane.

Vehicles eligible to use...

4

Category: Research & reports

Research Report 558 Epoxy modified bitumen chip seals

Published: Oct 2014
  • Also known as: 558
  • ISBN: ISBN: 978-0-478-41983-2
  • Author: Opus International Consultants Ltd

The research investigated aspects of the use of epoxy modified bitumen for construction of chip seals. Changes in the shear modulus, needle penetration and cohesive energy of the epoxy bitumen were used to monitor changes in the material as it cured at 35℃ and 45℃ and after accelerated ageing at 85℃ for 177 days. Wheel-tracking tests were used to determine the ability of the material to...

5

Category: Research & reports

Crash analysis reports

Published: Oct 2014
  • Author: NZ Transport Agency

As part of the NZTA’s commitment to the government’s Safer Journeys Strategy, we provide a range of crash analysis reports. These reports provide information at a variety of levels (national, regional and territorial authority) and across a number of key road safety themes.

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Category: Research & reports

Research Report 556 Survey methods for driver mobile phone use

Published: Oct 2014
  • Also known as: 556
  • ISBN: ISBN: 978-0-478-41981-8
  • Author: Opus International Consultants Ltd

Reducing driver distraction, including distraction resulting from mobile phone use, is an aim of New Zealand’s Safer Journeys programme.

Currently mobile phone usage by New Zealand drivers is captured by self-report or observational surveys. However, studies have indicated that these methodologies might be under-representing actual usage rates.

The aims of this study...

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Category: Research & reports

Research Report 555 Optimising drainage maintenance for pavement performance

Published: Sep 2014
  • Reference: 555
  • ISBN: 978-0-478-41974-0
  • Author: J Patrick and H Arampamoorthy, Opus Research | G Arnold, Road Science

This project was designed to investigate the importance of drainage maintenance for pavement performance and to recommend a maintenance strategy. With restrained funding for pavement renewals drainage maintenance is a cost-effective method to ensure optimum pavement performance.

A combination of repeated load triaxial testing and modelling of water movement has shown that once...

8

Category: Research & reports

Research Report 554 Travel time predictability

Published: Aug 2014
  • ISBN: 978-0-478-41966-5
  • Author: Sinclair Knight Merz Limited

Reliable journey time is a key parameter in travellers' route choice and has important applications in transport planning and modelling. For transport users, it affects their choice of mode, journey route and also their activity patterns. For transport planners and policy makers, journey time estimates are used to provide key indicators for performance monitoring, congestion...

  • Author: Opus International Consultants Ltd, University of Auckland, University of Canterbury

This report presents a summary of the outcomes from a research project commissioned by the NZ Transport Agency to develop design guidance for bridges in New Zealand for liquefaction and lateral spreading effects. The study involved review of relevant case studies and available design methods. The report summarises available design procedures that are based on observed seismic behaviour of...

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Category: Research & reports

Research Report 551 Car passenger valuations of quantity and quality of time savings

Published: 01 Jul 2014
  • Reference: 551
  • ISBN: 978-0-478- 41948-1
  • Author: Ian Wallis - Ian Wallis Associates

The objective of this research project was to undertake primary market research in New Zealand, at an exploratory level, to gain greater understanding of car passengers' valuations of travel time savings in a range of situations (including passenger valuations relative to when driving, and relative to car occupants as a group). Based on this exploratory research, the project assessed the...

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Category: Research & reports

Research Report 547 Fatigue design criteria for road bridges in New Zealand

Published: 30 Jun 2014
  • Reference: 547
  • ISBN: 978-0-478-41936-8 (electronic)
  • Author: MJ Beamish, Beca Ltd

Road bridges are subjected to millions of cycles of heavy vehicle loading over their design lives, and the introduction of higher vehicle mass limits on New Zealand roads will significantly increase the rates of fatigue damage in bridge superstructures. The NZ Transport Agency's Bridge Manual has relied on British and Australian standards for fatigue design criteria, and the aim of this...

  • Reference: 550
  • ISBN: 978-0-478-41914-6
  • Author: Beca Infrastructure Ltd, Francis and Cambridge Ltd

This study conducted in New Zealand in 2012 investigated the attitudes, prevalence, habits and self-reported risks associated with drug-driving, along with possible countermeasures. Telephone and internet surveys were used for a general population sample. Face-to-face interviews, mainly in prisons, surveyed habitual users of four main drug types: alcohol and other drugs, cannabis,...

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Category: Research & reports

Research Report 550 Transport productivity and sub-industry measures

Published: 24 Jun 2014
  • Reference: 550
  • ISBN: 978-0-478-41947-4
  • Author: Coelli Economic Consulting Services, Martin, Jenkins and Associates

This research investigated using four different approaches to measuring the productivity of the sub-industries (ANZSIC three digits) that comprise the New Zealand transport sector. The four approaches investigated were the growth accounting framework, the Tornqvist index, the Malmquist index and the input–output tables-based approach. The unit-record data available from Statistics New...

  • Reference: 549
  • ISBN: 978-0-478-41942-9
  • Author: P Kirby, B Wilmshurst, G Koorey

Reducing delay and achieving higher traffic flow rates and a reduction in the frequency and severity of crashes is a key component of New Zealand's long-term success in managing its transport network. The research focused around developing, implementing and measuring safe and robust design principles and techniques to understand economic efficiency and operation on New Zealand's...

  • Reference: 548
  • ISBN: 978-0-478-41939-9
  • Author: J Raine, A Withill, M Morecock Eddy

The New Zealand Transport Agency selected URS NZ Ltd to conduct a literature review in 2013 to find available cost and benefit information for traveller information systems (TIS) and associated products. The outcome of this literature review will be used as reference material for current traveller information projects and as the basis for future New Zealand TIS projects.

This study...

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Category: Research & reports

Research Report 542 Ongoing domestic freight volume information study

Published: Mar 2014
  • Reference: 542
  • ISBN: 978-0-478-41903-0
  • Author: R Paling, Richard Paling Consulting, Auckland | M King, Murray King and Francis Small Consultancy, Wellington | J Ballantyne and C McBride, Traffic Design Group, Lower Hutt | A Gray, Statistics Research Associates, Wellington

The availability of comprehensive and reliable information on the movement of freight is increasingly seen as an important element in the effective planning for the sector, both by those providing infrastructure and those providing services. However, the main source of data on freight movements, the Ministry of Transport's National Freight Demand Study, was based on data that is now...

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Category: Research & reports

Crash data for All New Zealand 2000 onwards

Published: Mar 2014
  • Author: NZ Transport Agency

Below are links to .csv files exported from the Transport Agency's Crash Analysis System (CAS) which are suitable for import into MS Excel.

These files contain injury and non-injury crash information and are split into local body areas. Each crash also has a geographic co-ordinate for import into geospatial systems.

For the current year we will provide quarterly...

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Category: Research & reports

Research Report 546 Measuring the resilience of transport infrastructure

Published: Feb 2014
  • Reference: 546
  • ISBN: 78-0-478-41915-3
  • Author: JF Hughes and K Healy - AECOM New Zealand Ltd

Internationally there is a growing call to improve the resilience of our critical infrastructure. This is in response to a realisation that the services we take for granted may be robust in the face of predictable hazards/failures, but are in fact extremely fragile in the face of unanticipated shocks.

In the context of transport infrastructure, operators strive to ensure that transport...

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Category: Research & reports

Research Report 545 - The relationship between crash rates and rutting

Published: Jan 2014
  • Reference: 545
  • ISBN: 978-0-478-41916-0
  • Author: PD Cenek, RJ Henderson and M Forbes - Opus Research (previously Opus Central Laboratories) | RB Davies - Statistics Research Associates | A Tait - National Institute of Water and Atmospherics

This report details research carried out in Wellington, New Zealand, over the period 2012-2013. The broad aim was to develop relationships between rut depths and crashes on New Zealand's state highway network.

A literature review suggested that deep ruts could either:

- increase crash rate because of reduced vehicle control, or
- reduce crash rate as drivers...

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Category: Research & reports

Research Report 543 Pavement design for specialist surfacings

Published: Jan 2014
  • Reference: 543
  • ISBN: 978-0-478-41905-4
  • Author: G Arnold, A Stubbs and J Vercoe - Road Science

Leutner shear tests to measure bond strength and flexural beam tests to measure flexibility were conducted on specialist surfacing resins used in New Zealand for coloured and high-friction surfacings. The flexural beam tests found the specialist surfacing resins, except for one, to be very flexible at 5 and 20 degree test temperatures. This flexibility showed that the specialist surfacing resins...

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