Basic Analysis of Measurement Data from Japan in EVEN Project

Abstract

The second Permanent International Association of Road Congresses—World Road Association International Experiment to Harmonize Longitudinal and Transverse Profile Measure and Reporting Procedures (EVEN Project) was conducted in 1998 in three regions of the world. The aim of the research is to harmonize and correlate measures of road profiles for applications in pavement construction and management. The basic analysis and measurement results for roughness conducted in Hokkaido, Japan, are summarized. The longitudinal profile measurements obtained with seven high-speed profilometers in Japan, their influence on roughness indices such as the international roughness index, and the correlations between roughness indices, together with Japan’s current measurement and evaluation system for roughness, are also compared and analyzed.

Influence of Joints on Ride Quality and Roughness Index

“…The IRI was further related with pavement test methods and specification (Killingsworth, 2004). Recently, Index IRI has been globally adopted to discuss pavement performance issues (Rauhut et al, 1999;Delanne and Pereira, 2001;Kawamura et al, 2001). Moreover, the IRI has been applied as a specification measure, a network level performance indicator (Li et al, 2001;Lu et al, 2003), a standard for smoothing pavement surfaces (Mccandless, 2001), a tempted measure of bridge ride quality (Mcghee, 2002), and a ride quality standard for urban streets (Shafizadeh and Mannering, 2003).…”

Rational Procedure for Determination of Rut Depth Intervention Level in Network-Level Pavement Management

“…Long before the structural condition of a rutted pavement becomes a concern, maintenance or rehabilitation of the pavement would have to be carried out to restore the functional condition of the pavement for safe traffic operations. Pavement ruts affect the functional operation of a highway because they can cause steering instability of vehicles, especially for lane changing or overtaking operations of vehicles (1,2). More important, they present a safety risk to vehicles because they collect water during wet weather, which can lead to reduced skid resistance along the rutted wheelpaths because of the presence of water (3,4).…”