This document highlights some key findings from Long-Term Pavement Program (LTPP) analysis studies completed between 2000 and 2003. A number of analysis projects have been conducted since the publication of the first volume in 2000, Key Findings from LTPP Analysis 1990–1999. In all, approximately 50 documents were reviewed, including LTPP research reports and National Cooperative Highway Research Program (NCHRP) projects using LTPP data. Most of these documents are available at the LTPP or NCHRP Web site. The goal of this report is to provide LTPP partners with information that can help them in their efforts to design, build, and maintain cost-effective and long-lasting pavements, by providing sections on:
 

• Site conditions.
• Structural features.
• Material characterization.
• Initial roughness.
• Pavement maintenance.
• Pavement rehabilitation.
• Local calibration of the 2002
• Pavement Design Guide