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Research Report 535 Accurate and affordable location technology for New Zealand

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

A potential gap between available location technology and its use on the ground was identified in the New Zealand land transport sector. This research sought to bridge that gap and support the NZ Transport Agency's ('Transport Agency') goal to increase the use of appropriate location technology by its key providers. Consultation with these was undertaken to understand the requirements for location technology and any lessons learnt from previous implementations. A literature and technology review and evaluation identified suitably accurate and affordable location technologies for use in road asset management in New Zealand.

Research report 398 Utilisation of the kerbside through-lane at signalised intersections

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

Lane under-utilisation is commonly experienced at signalised intersections. This has significant effects on intersection capacity, which has consequences for congestion, especially in the urban environment. Ultimately, this results in overly optimistic design predictions. Little research has been undertaken in New Zealand and Australia on this topic. The main focus of this study was to determine the effect of short kerbside through-lanes on utilisation. The results of the study show a positive relationship between lane length and utilisation; however, it was not found to be a strong link. Increasing auxiliary lane length only resulted in minor improvements in lane utilisation. Based on the small sample analysed in this study, it is therefore concluded that increasing the total upstream and downstream length of the short kerbside through-lane is likely to result in only marginally higher rates of use for both 2-laners and 3-laners.

Research Report 245 Assessment of rural road simulation modelling tools

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

This research investigated the relative merits of various simulation packages (in particular TRARR, TWOPAS and PARAMICS) for modelling vehicle interactions on rural highways. It assessed their suitability for use as tools for evaluating crash risk and travel efficiency, particularly in the prediction of vehicle speeds and bunching in typical highway situations. All were found to have some strengths over the others for particular project applications. A review was also made of recent or developing models of rural crash risks (including IHSDM) and their potential application in New Zealand considered. Although the underlying methodologies appear promising, most would requre further adaptation for the New Zealand environment.

Research Report 540 Customers requirements of multimodal travel information systems

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

The purpose of this research was two-fold: 1) to provide evidence-based recommendations that identify the Transport Agency's customers' key information needs, and 2) to provide best-practice guidance on ways the Transport Agency can best offer and 'push' the delivery of multimodal travel information that is tailored to individuals. This research was carried out in three stages, between November 2012 and June 2013:

Research Report 246 Personalised marketing demonstration study for Birkenhead Auckland

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

A research study was undertaken, in 2002, to facilitate and monitor the effects of a personalised marketing demonstration programme in Birkenhead, Auckland, New Zealand. The research project involved three main components:

Research Report 297 Through lane utilisation at traffic signals

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

Research was undertaken during 2004/05 to determine the effect of short approach through-lanes and downstream merges on lane use at signalised intersections, and to find ways of improving use. This involved surveying three intersections. In general, short slip lanes and short approach and departure through-lanes cause short through-lanes to be used less. Accordingly, a guide was prepared to provide preliminary information to assist practitioners to predict and improve short through-lane use. A direct correlation was identified between short through-lane length and associated lane use. Also, short lane use was substantially less than that estimated by an analytical traffic model. Furthermore, graphs indicated that approach lane length and departure lane length had a similar effect on lane use. Economic analysis demonstrated that lengthening short through-lanes was economically viable. Analysis of a short lane on the right showed that it was more likely to be evenly used than a typical short lane...

Research Report 008 Urban road traffic models for economic appraisal

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

Research for this project identified and developed a range of traffic analysis software suitable for New Zealand use to evaluate urban road improvement schemes. Outputs of the models, in the form of traffic performance characteristics, are used to estimate expected economic benefits from alternative options for a road improvement scheme. This is to allow funding agencies to allocate resources rationally to competing projects.

Research Report 390 The waterproofness of first-coat chipseal

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

This research project, undertaken in 2006 to 2008, confirms that traffic can force water through first-coat chipseal surfacings that do not visually show signs of cracking. The research measured the change in moisture content after rain on a number of newly sealed sites. Although this testing showed a statistically significant increase in moisture over all sites, the increase was not dramatic. The research concludes that water ingress can occur where a water film collects on the pavement. The film of water can occur either through rutting of the pavements, or if the crossfall and longitudinal shape is such that a sheet of water forms above the surface texture of the pavement.

Research Report 029 Road profile characterisation

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

Roughness indices are used to monitor road condition and prioritise maintenance and rehabilitation programs. The most commonly used measure in New Zealand is NAASRA roughness which is based on the dynamic response of a normal passenger car. It does not necessarily reflect the dynamic response of heavy vehicles which produce most of the pavement wear and hence may not reflect the rate of future deterioration of the pavement. Therefore a roughness index based on heavy vehicle response would provide useful additional information for pavement managers. The report describes attempts to develop such an index.

Research Report 432 Minimum design parameters for cycle connectivity

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

This research used video surveillance of 1245 cyclists in New Zealand at pinch points to determine the relationship between the remaining lane or shoulder width and the likelihood of cyclists traversing the edge line into the motorised vehicle stream. Ten sites were observed in Wellington and nine in Christchurch. Sites were selected on the criteria of retained cycle space widths at short pinch points between 0.2m and 1.2m wide, variable relative heights of the objects and traffic conditions. Remote camera equipment was installed to capture cyclist behaviour immediately before and after the site. Results established that at 0.4m most cyclists could retain a course inside the edge line and navigate the pinch point without needing to enter the motorised vehicle stream. It was observed cyclists appeared to anticipate pinch points and move to avoid them gradually in a way to minimise lateral movement.