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Displaying Page 4 of 64

Research Report 334 Flexural modulus of typical New Zealand structural asphalt mixes

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

Structural hot mix asphalt (HMA) pavements have become popular in New Zealand in recent times as heavy traffic volumes have increased and early failures of granular pavements have become more common, especially in urban areas where road maintenance causes major traffic disruption.

Research report 392 The implications of discount rate reductions on transport investments and sustainable transport futures

Published: | Category: Sustainable land transport , Research programme , Research & reports | Audience: General

The effects of reducing the discount rate used in evaluations of initiatives funded from the National Land Transport Fund (NLTF) were assessed during 2007–09. Over 160 projects across a range of project types were collated and the relative effects of different discount rates were documented.

Research report 507 The implications of road investment

Published: | Category: Economic development , Research programme , Research & reports | Audience: General

The objective of this research (undertaken in 2010–12) was to provide improved evidence (potentially leading to improved modelling, monitoring and evaluation methods) on the implications of major road investments in New Zealand on significant factors including travel demand, operational performance, environmental effects, emissions, road safety, development patterns and economic effects.

Research Report 252 New standard precast concrete bridge beams: stage 1 – identification of new standard beam shapes

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

The objective of Stage 1 of this research project (carried out in 2002-2003) was to research and identify the most appropriate precast concrete bridge beam shapes that should be adopted in New Zealand as industry standards for the future. This research was considered a priority as the standard bridge beam designs currently used in New Zealand had been adopted as industry standards in the 1970s. These designs are therefore almost 30 years old and out-of-date with respect to design codes, construction techniques, and the higher strength materials now commonly used.

Research Report 311 Energy risk to activity systems as a function of urban form

Published: | Category: Sustainable land transport , Research programme , Research & reports | Audience: General

This project aimed to develop analytical methods for assessing energy risks due to a peak and decline in global oil production. Additionally to develop modelling capabilities to link these analyses to urban form. The aim was to provide a new capability for long term development planning. The need for communication between members of the community, councillors and practitioners with diverse backgrounds and interests are realised. Thus, the goal in modelling was to provide accurate risk assessment and clear visual-based communication of results. Keywords: energy, urban form, transport policy, modelling.

Research Report 369 Trends in older people's travel patterns

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

We updated our earlier study of older people’s travel patterns using the 1997/98 New Zealand Household Travel Survey (NZHTS) with a comparative analysis using the recently compiled 2004–07 Ongoing NZHTS database (ONZHTS).

Research Report 484 The social impacts of poor access to transport in rural New Zealand

Published: | Category: Sustainable land transport , Research programme , Research & reports | Audience: General

Little social research on rural access to transport in rural communities has been carried out in New Zealand. With assistance from the NZ Transport Agency, the researchers addressed this issue and the social effects of poor access. Census and national travel survey data provided a picture of access to private and public transport, travel patterns and socio-economic characteristics of residents in areas with different levels of transport access. Two rural community case studies were conducted to document the social issues and impacts of poor access to transport, and to identify local attempts to solve transport problems. Options for addressing poor access to transport and its effects were explored with government and private sector transport specialists.

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.

Research Report 571 Approaches to valuing injury and mortality risk in transport assessments

Published: | Category: Economic development , Research programme , Research & reports | Audience: General

This report describes a review of literature on approaches to valuing injury and mortality risk in transport assessments.

Research Report 337 Deterioration of prestressed concrete bridge beams

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

A routine inspection revealed significant corrosion of the prestressing strand on a concrete road bridge built in 1966 to a standard design used in about 117 State Highway bridges in New Zealand. To identify the cause of the deterioration and how many bridges of this design might be affected, the conditions of 29 similar bridges on New Zealand State Highways were evaluated by site investigation. The research, carried out in 2005–2006, found that although the concrete quality in the bridge beams was generally good, the combination of cover depths less than 25 mm and exposure to salt spray had increased the likelihood of corrosion in bridges of this design in the B2 (coastal frontage) exposure zone. Bridges in the B1 (coastal perimeter) and A2 (inland) zones are less likely to be affected, although the concrete in some of the beams contained chlorides added during construction.
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