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Displaying Page 3 of 64

Research report 404 Environmental and financial costs and benefits of warm asphalts

Published: | Category: Environmental impacts of land transport , Research programme , Research & reports | Audience: General

Warm asphalts are asphalts produced at significantly lower temperatures than the C that is typical of a hot mix plant. Depending on the approximately 160 technology used, laying and compaction may also be possible at significantly reduced temperatures. The report gives a summary of current warm asphalt technologies, followed by details of costs, temperature reductions and energy savings. A comparison is made of potential environmental costs and benefits of hot mix manufacture and the different warm mix methodologies.

Research Report 462 Lifetime liabilities of land transport using road and rail infrastructure

Published: | Category: Environmental impacts of land transport , Research programme , Research & reports | Audience: General

The aim of the project was to establish the whole-of-life environmental performance of passenger and freight movement that uses roads and rail. The performance indicators selected were life cycle energy consumption, life cycle stormwater contamination, and life cycle GHG emissions. This study was based on process assessment and considered material use, transport requirements, on-site machinery use, and fuel use. The impacts of traffic delays and rolling resistance were not considered. The study was undertaken in New Zealand between October 2009 and March 2011 using data for the year beginning July 2007 and ending June 2008.

Research Report 520 - National long-term land transport demand model

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

This report describes a national long-term land transport demand model (NLTDM) for evaluating transport demand scenarios looking out 30 years and taking account of mega-trends in: population growth dynamics; spatial demographic trends; technology trends; income and economic growth; industrial composition; and policy.

Research Report 598 Cracking in specialist surfacing systems

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

Specialist surfacings such as high-friction and coloured traffic-calming surfaces have gained huge popularity since their introduction. However, the reputation of these specialist systems in New Zealand is also plagued by premature failures due to cracking and other related modes.

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 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.
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