Resources

Papers from session three of the Surface friction conference, held in Christchurch, New Zealand in May 2005.

Impact factors were recorded on main members and deck slabs (where appropriate) of 12 bridges of between 9 and 30 metre span, under normal traffic conditions. Correlation of impact factor was checked against span length, natural frequency, damping

This research project, undertaken in 2006 to 2008, confirms that traffic can force water through firstcoat chipseal surfacings that do not visually show signs of cracking. The research measured the change in moisture content after rain on a number

and surface dressing techniques, while the WBPDC test sections used the surface dressing technique only. The test sections were monitored by photographing the dust plume generated by a test vehicle trafficking each test section at regular intervals

This specification and guidance notes set out requirements for basecourse aggregate for use on state highways and other heavily trafficked roadways. M/4 is the reference or standard specification for primary basecourse for heavy duty use in flexible pavements with thin surfacings. The major changes were published on April 2006.

of passing lane on rural sections of New Zealand state highways, and for rural unsealed sections of state highways and local roads. Where there was sufficient data, rates were also calculated for several traffic volume and terrain severity

resolution than is typically possible with vehiclebased systems. The instrument is similar to that which has previously been designed and developed by the Swedish Road and Traffic Research Institute (VTI). The Transit New Zealand laser profilometer