Resources

In order to improve the efficiency of the road transport industry in New Zealand, a range of mass limit increases for heavy vehicles has been proposed.

This report investigates traffic patterns and estimation of annual average daily traffic, and suggests a basis for a traffic count monitoring programme based on Transit New Zealand's regular traffic monitoring strategy.

A methodology has been developed to identify the cost-optimal earthworks cut slope design and establishment of appropriate earthworks contingency factors.

Both the design of new pavements in New Zealand and their rehabilitation treatments are currently performed in accordance with the Austroads Pavement Design Guide and its New Zealand Supplement.

Deck joints are a potential source of deterioration and maintenance problems in a bridge structure and have been identified as the most common maintenance problem in New Zealand road bridges.

A limited survey of roading practitioners was carried out to determine their opinion and needs with respect to communicating the findings of research about the properties of unbound aggregates.

The structural number (SN) of a road pavement is a method for describing the strength of a road pavement, in pavement deterioration models that are currently being calibrated for New Zealand road conditions.

Recognising the significance of scour (ie channel erosion, in all its forms) as a cause of bridge damage, a screening methodology for assessing and ranking New Zealand bridges in terms of their susceptibility to scour is presented.

Geosynthetic-reinforced soils (GRS) have been found to be cost-effective compared to traditionally used retaining structures in specific situations.

One 1986 and three 1991 180/200 penetration grade Safaniya bitumens (from Saudi Arabia) produced by the Marsden Point Refinery were analysed by a range of procedures to detect any significant differences in chemical composition.