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Research Report 629 System dynamics investigation of freight flows, economic development and network performance

Published:
Category: Performance monitoring , Research programme , Research & reports | Audiences: General, Road traffic engineers & consultants

The purpose of this research was to investigate if and how systems dynamic (SD) modelling could be used for understanding traffic flows at an inter-regional (state highway) level, in the context of improving understanding of the relationship between …

Research Report 627 Data standards for the NZ transport network

Published:
Category: Transport demand management , Research programme , Research & reports | Audiences: General, Road traffic engineers & consultants

As transport network operations become more and more time critical the requirement for knowledge of the performance and state of the network becomes more significant for decision support.

Research Report 424 Design moisture condition guidelines for pavement design and material assessment

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

A pavement design model developed in the USA is used to estimate the equilibrium degree of saturation in pavement subgrade and basecourse materials.

Research Report 626 The long-term acoustic performance of New Zealand standard porous asphalt

Published:
Category: Activity management , Research programme , Research & reports | Audiences: General, Road traffic engineers & consultants, Roading contractors

Research was commissioned to investigate the long-term acoustic performance of New Zealand standard porous asphalt made to TNZ P/11 Specification for open graded porous asphalt (OGPA).

Research report 423 Effectiveness of transverse road markings on reducing vehicle speeds

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

Transverse road markings as a speed mitigation device may be a cost-effective method of reducing fatal and serious injury crashes as a consequence of speeding on a high-speed hazard approach.