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Wednesday, 20 July 2016

How waterproof are sprayed seals?

Sprayed seal surfacings on unbound granular pavements are used on around 90% of all surfaced roads in Australia. This type of pavement structure is extensively used due to its low initial cost.  In addition to providing a wearing course surface for passing traffic, sprayed seals are intended to provide a waterproofing…
Over recent years, Austroads research has attempted to understand what a Safe System would look like in practice, including what Safe Roads and Roadsides really means. These two-day workshops, fully funded by Austroads, will discuss the safety aspects of road infrastructure; from local roads, right through to arterials of national significance. Expert facilitators and presenters will…
Austroads has published a report that examines the effect of heavy vehicle loading on sprayed seals, with a view to incorporating loading impacts into the Austroads sprayed seal design method. Sprayed seal surfacings on flexible granular pavements are a major pavement type in rural Australia, comprising some 90% (by length)…
Austroads has published proposed updated guidance on the design of initial treatments for sprayed seal surfacing. The terminology and definitions used to describe applying sprayed seals directly onto a pavement basecourse have been updated, alongside the design method. Previously there was no formal design method used for priming and primersealing. The…
 Austroads has published a review of the bitumen specifications currently used in Australasia and other countries. Austroads member agencies procure about $1 billion of bitumen annually to build and maintain the Australasian road network. In Australia and New Zealand, national specifications are used for quality control of bitumens for the…
Progress in developing a national accreditation scheme for road safety barrier installers and maintainers will be shared during a series of workshops to be held in July in Australia and New Zealand. In collaboration with Austroads and the Working Party for National Training and Accreditation for the Safety Barrier Industry,…
Austroads has published a report that investigates the policy challenges presented by the operation of agricultural vehicles on public roads in Australia and New Zealand. The agricultural vehicle fleet encompasses a wide range of equipment with substantial variation in mass and dimensions. Tractors and harvesters can weigh up to 30…
Austroads has published the findings of a two-year study which sought to identify infrastructure improvements to reduce motorcycle crash risk and crash severity. The investigation included: a comprehensive literature review, crash analysis, the identification of road infrastructure elements as crash factors, the identification of effective mitigation measures and their likely…
Tuesday, 07 June 2016

Reducing head-on casualties

Austroads has published a compendium of local and overseas practice and experience in minimising the risk and severity of head-on crashes.  In an average year, there are about 74 fatal head-on crashes in urban environments and 264 in rural environments in Australia and New Zealand combined. Head-on crashes in rural…
Off-peak deliveries in urban areas have the potential to reduce congestion, improve air quality, improve road safety, and assist with freight and logistics operations. Austroads latest report examines successful examples of off-peak freight movement around the world and identifies obstacles which are limiting the uptake of off-peak delivery in Australia.…

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