NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance;NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance;
Abstract:
The Long Term Pavement Performance (LTPP) program has been collecting profile and
International Roughness Index (IRI) information from more than 2,062 test sections since 1989
using K.J. Law 690DNC optical sensor Profilometers. Analysis of the IRI data has been limited,
but with the increasing distribution of the LTPP DataPave software, this data is seeing increasing
use. In an effort to confirm the quality of LTPP IRI data in the Information Management System
(IMS) database and to document its variability, LTPP initiated an analysis of IRI variability in
September 1997. This report documents the results of that study.
The LTPP program relies on data collected by weigh-in-motion systems that measure the traffic stream The LTPP program receives and analyzes data from ...
A 2015 state law directed the Michigan Department of Transportation (MDOT) to explore innovations that can help pavements last longer and require less...
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United States Department of Transportation
[PDF-13.59 MB]
