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

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

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 project was to provide the basis for amended fatigue loadings based on New Zealand heavy vehicle characteristics, with allowances for forecast long-term growth in volumes and vehicle masses. The base fatigue loading was derived from analyses of effects on bridge spans of heavy vehicles recorded at weigh-in-motion sites between 2007 and 2011. The base fatigue loading was then adjusted for increases in legal vehicle masses permitted under a 2010 Land Transport Rule amendment (introducing HPMV – high productivity motor vehicles).

Research Report 617 Transition from visual condition rating of cracking, shoving and ravelling to automatic data collection

Published: | Category: Activity management , Research & reports | Audiences: General, Road traffic engineers & consultants

Robust condition data feeding into asset management processes is a key step towards having confidence in long-term strategies for renewals and replacements. The manual condition rating system was originally developed as an input into the treatment selection algorithm; however, in later years the data has been used for pavement deterioration modelling and trend monitoring, which are outside the intended scope of the rating system. It was therefore not unexpected that both field inspectors and researchers highlighted shortcomings in the quality and repeatability of manually recorded data. Automated scanning technologies promise to overcome many of the issues associated with manual condition data collection. However, before a wide-spread adoption of the scanning technology is possible, research had to prove the accuracy of the measurements and determine the impact of new data items in the asset management processes.

Regional passing and overtaking plans: a bridge between high-level policy and localised solutions

Published: | Category: Research & reports | Audience: Roading contractors

This paper will discuss the process for developing NZ Transport Agency’s passing and overtaking (PO) plans.

Advanced bus solution: final report

Published: | Category: Public transport , Planning, design, funding, building, maintenance of the transport network , Guidance for specialists , Research & reports | Audiences: Communities, General, Local & regional government, Road traffic engineers & consultants

The objective of the ‘Advanced Bus Solution’ (ABS) study was to provide the details of a preferred advanced bus solution for central access and city to / from the Airport that provides the opportunity for a step change in current service levels:

the Advanced Bus Solution utilises new and emerging technologies
it has been outlined to sufficient detail to enable comparisons with other modes at the Programme Business Case / Indicative Business Case level
The study comprised six modules of work over an 11week period (October – December 2016):

Review of evaluation criteria and establishment of cost benefit analysis methodology
Review of current bus solution
Assessment of advanced bus initiatives
Advanced bus option development
Advanced bus option selection (based on costbenefit and multicriteria analysis)
Definition of preferred ‘Advanced Bus Solution(s)’
The project was undertaken by L. E. K.

Performance of highway structures during the Darfield and Christchurch earthquakes of 4 September 2010 and 22 February 2011

Published: | Category: Research & reports | Audience: Road traffic engineers & consultants

The report covers state highway bridges in the Canterbury region that were subject to significant ground motion under the Darfield and Christchurch earthquakes of September 2010 and 22 February 2011. The report documents, ground motions, bridge damage, structural analysis, interpretation of results and geotechnical observations including liquefaction.

Better Conversations on Road Risk Media Insights

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

If you read the news, browse social media, or speak with friends or colleagues, you often hear misinformation about speed and risk on the road.  

Better Conversations on Road Risk Media Insights seeks to provide meaningful analysis of what the media is saying and how people are talking about road risk and speed in their communities. On this page you'll find a series of PDF articles we have referenced within some editions of Media Insights. Sign up for Media Insights.

Research Report 544 New Zealanders attitudes towards drug-driving and suggested countermeasures

Published: | Category: Safety, security and public health , Research programme , Research & reports | Audience: General

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, methamphetamine and benzodiazepine. Alcohol was the main substance used before driving, followed by alcohol and cannabis together and cannabis alone. Nearly half the general population respondents had driven after taking drugs or alcohol and a sizable proportion after taking drugs other than alcohol. Many respondents in the face-to-face group said they took risks when driving. Only a third had a full licence despite driving for more than 10 years. The majority had been involved in a crash, more than half being at fault.

Providing for walking: research into guidance and policy

Published: | Category: Research & reports | Audiences: General, Walkers & cyclists

The NZ Transport Agency commissioned Abley to conduct research into how well New Zealand is providing for walking, with a particular focus on existing guidance and policy. The research indicated that overall, New Zealand is well placed in terms of the strategic direction, policy and planning and design guidance, however there are some improvements that can be made into the funding processes and translating guidance into good practice. The Transport Agency is developing a programme of work to review and implement the report’s recommendations.

Research Report 662 Best Practice Model For Developing Legislation

Published: | Category: Inclusive access , Research & reports

The aim of this research was to develop a model to guide the development of land transport regulation in the context of New Zealand’s public safety regulatory environment. The research found legislation tends to reflect a particular moment in time. Regulatory failures often share common factors, from which we can learn. New Zealand’s regulators tend to work within constraints that impede their ability to develop flexible regulation for rapidly changing conditions. The report proposes a systems model for regulatory design. Keywords: developing legislation, regulatory design, regulatory failures, regulatory tools, transport safety

Research Report 661 Travel demand management: strategies and outcomes

Published: | Category: Inclusive access , Research programme , Research & reports | Audience: General

Travel demand management (TDM) is a rapidly changing field. This research drew lessons from international practice to inform New Zealand planning and policy decisions. The research findings show that a wide range of strategies are in use internationally and the report summarises some key insights from international TDM practice. Keywords: behaviour change case study, cycling, incentives, mobility management, parking, public transport, transport, travel demand management, walking