Publications

The motor car currently dominates personal travel. However its position is being challenged by concerns over congestion, fuel availability and price, local air quality and global atmospheric impacts. While public transport will be called on to play…

Part 6 of the Guide to Pavement Technology addresses unsealed pavements including operational demands of unsealed road surfaces, pavement configurations, floodways, cuts, fills and mine haul roads, the identification of suitable pavement materials…

This Guide contains advice on the selection, testing and specification of crushed rock and naturally occurring granular materials for use in pavement base and subbase construction.

Older drivers are over represented in serious injury and fatal crash rates based on distance travelled. While their physical frailty is a contributing factor, ageing may also result in unacceptably diminished driving skills for a minority of older…

Part 4J of the Guide to Pavement Technology provides information and guidance on: the classification and description of source rocks

This report presents the results of testing conducted on an unbound granular pavement with a thin bituminous surfacing using a variety of tyre types and half-axle loads applied using the Accelerated Loading Facility. It was found that the reference…

There is a widespread claim that older drivers are over-represented in crashes, particularly when crash figures are adjusted for distance travelled. There are numerous reasons suggested for this increased risk, including the increased frailty…

Improved RD models for sealed granular and asphalt pavements are needed. Pavement performance history data from state road authorities and New Zealand (SRAs) were used for calibrating RD models. The calibration and refinement of RD models is…

Over the last decade a considerable amount of research effort has been focussed on the development of a repeated load triaxial (RLT) test procedure to assist practitioners in the use of natural and marginal unbound base/subbase materials in road…

The objective of this report is to provide data relating the laboratory repeated load triaxial test (RLT) results to field performance and to develop procedures for incorporation of RLT test results into performance-based specifications and…