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Displaying Page 5 of 64

Research report 478 Improved effectiveness and innovation for audio tactile profiled roadmarkings

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

The research identified how the physical noise and vibration generated by traversing ATP roadmarkings was influenced by the properties of the roadmarkings, such as their height, width and pitch, as well as by other factors, such as vehicle speed. The research established the relationship of human response to the noise and vibration generated. The physical effects of traversing ATP roadmarkings were determined by measuring the noise (using sound level meters) and vibration (using accelerometers) inside the vehicle while the vehicle traversed a special test strip of ATP roadmarkings, the profiles of which were machined mainly from wood, or from plastic. The driver-response was investigated as a threshold effect via a laboratory-based driving simulation. Participants were played noise effects in controlled conditions from a vehicle driving over different ATP block heights between 2mm and 6mm, and from a vehicle on the road only.

Research Report 537 Improving the cost-benefit analysis of integrated PT, walking and cycling

Published: | Category: Integrated land use and transport systems , Research programme , Research & reports | Audience: General

This research project developed an evaluation framework for estimating the cost-benefit analysis of integrating public transport (PT) with walking and cycling.

Research Report 572 Detailed customer requirements of travel information services, and the effectiveness of current channels

Published: | Category: Integrated land use and transport systems , Research programme , Research & reports | Audiences: General, Road controlling authorities, Road traffic engineers & consultants

The purpose of this report was to build on Transport Agency research report 540 ‘Customers’ requirements of multimodal travel information systems’ to provide practical market and customer research on the delivery methods that customers would prefer and to identify which would have the greatest impact on improving the quality of customers’ travel experiences.

Research Report 312 Safety implications of flush medians in Auckland city: further analysis

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

Between July 2004 and February 2006, research was continued on the safety implications of flush medians in Auckland, New Zealand. A site-by-site benefit/cost analysis found that 38% of studied sites achieved a negative benefit/cost ratio, proving that separate analysis is required for every proposed flush median site. The width of a flush median was found to have no effect on overall benefit/cost ratios.

Research Report 427 Pavement thickness design charts derived from a rut depth finite element model

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

Repeated load triaxial (RLT) tests were conducted on the granular and subgrade materials used at CAPTIF (NZ Transport Agency's test track). Permanent strain relationships found from RLT testing were later used in finite element models to predict rutting behaviour and magnitude for the pavements tested at the CAPTIF test track. Predicted rutting behaviour and magnitude were close to actual rut depth measurements made during full-scale pavement tests to validate the methods used. This method of assessing rutting in granular materials was used to predict the life or number of axle passes to achieve a rut depth defining the end of life for a range of pavement thicknesses, and the subgrade types to produce new pavement thickness design charts. The results of these rut depth predictions showed the Austroads guide required thicker pavements for low traffic volumes, while the rut depth predictions showed significantly thicker pavements were required for high traffic volumes.

Research report 485 Ground vibration from road construction

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

There is an increasing requirement to control and manage ground vibrations generated by road construction and maintenance activities through project specific construction management plans. The objective is to minimise any potential adverse effects. The ability to reliably estimate vibration levels of specific construction activities at the project planning stage and to assess their likely effect on structures and their occupants is therefore required. Typical vibration characteristics for various activities, including site preparation, dynamic compaction and piling were measured for representative equipment and soil types to obtain baseline values for use in preconstruction assessments and to enable validation of available prediction methods. A review of international standards was also undertaken leading to two proposed criteria against which predicted vibrations can be assessed for damage and human perception. The possible application of data acquired from commonly used geotechnical methods, notably scala penetrometer for estimating soil attenuation and falling weight deflectometer to generate...

Research Report 545 - The relationship between crash rates and rutting

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

This report details research carried out in Wellington, New Zealand, over the period 2012–13. The broad aim was to develop relationships between rut depths and crashes on New Zealand's state highway network.

Research Report 313 Effects of toll removal on Tauranga Harbour Bridge New Zealand

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

As toll roads and other forms of road pricing become of more interest to road controlling authorities in New Zealand, the importance of providing robust forecasts of motorists’ responses to tolls increases. While procedures for forecasting patronage on toll roads are in common use internationally, the applicability of international practice to the New Zealand context is uncertain.

Research Report 370 Promoting sustainability in New Zealand's rail system

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

This report presents the findings of research investigating the opportunities and barriers to promoting sustainability in New Zealand’s rail system. The research involved two main aspects: exploring what sustainability means in a New Zealand rail context; and, investigating what opportunities and barriers might exist to achieving a sustainable rail system. Opportunities and barriers were considered in terms of their likely timescale and whether they were internal (systemic) or external (non-systemic) to the rail system. The research is intended to stimulate discussion about the role of rail in New Zealand’s transport system in the future. As part of this ongoing discussion, this report concludes with a number of recommended actions that could be undertaken to promote sustainability in the rail system.

Research report 428 Trialling pedestrian countdown timers at traffic signals

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

The overall research objective was to evaluate changes in pedestrian safety and traffic efficiency from installing pedestrian countdown timers. The study analysed pedestrian behaviour and safety before and after the installation of a trial countdown timer at the intersection of Queens Street, Bunny Street and Margaret Street in Lower Hutt in July 2007. The results were compared with the 2006/07 trial at the Queen Street/Victoria Street intersection in Auckland CBD and showed very different results. The Auckland city trial indicated that, if placed in suitable locations, pedestrian countdown signals were associated with pedestrian behaviour change that enhanced safety. This study in Lower Hutt demonstrated that the observed pedestrian safety decreased as the percentage of both late starters and late finishers increased, although this was likely to be due to the nature of the intersection with one particularly long diagonal crossing coupled with the allocated phase times.
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