2007 - NZ - The Use of Composite Indices as Resurfacing Triggers

This paper explained the derivation of two composite condition indices used in New Zealand. The first is the RDI, which was developed to give an indication of surface condition (health) on the network. The second is the SII, which was developed for the primary purpose of triggering resurface actions in the long term maintenance planning and pavement prediction system implemented in NZ.