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Research Report 202 Update and enhancement of traffic count guide

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

The measurement of traffic volumes on an extensive nationwide network is a very large task. It is not feasible to count all traffic on all roads all of the time.

Research Report 227 Comparison of predictive pavement management models (HDM-III HDM-4 NZ dTIMS) for New Zealand conditions

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

This report describes the results of a project, carried out in 2000–01, to investigate the enhancements carried out to road deterioration (RD) and works effects (WE) models included in the predictive pavement modelling system, HDM-4, with respect to the HDM-III models used in the NZ dTIMS Setup used now in New Zealand.

Research Report 229 Assessing road-friendly suspensions: implementation feasibility study

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

The objective of this project, carried out in 2001, was to investigate the design of an operational scale device for testing the 'road-friendliness' of heavy vehicle suspensions. This includes an estimate of the cost of manufacturing the device, adapting an existing facility (such as a vehicle testing station) for the operation of the suspension tester, and the running costs associated with the testing device.
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