This brochure provides and overview of the Long-Term Pavement Performance Program (LTPP).

What is LTPP?
Started in 1987 as part of the Strategic Highway Research Program (SHRP) and managed by the Federal Highway Administration (FHWA) since 1992, the Long-Term Pavement Performance (LTPP) program studies the performance of in-service pavements. The primary goal of the LTPP program is to understand how and why pavements perform as they do. To accomplish this goal, researchers collect pavement performance data using standard data collection procedures and protocols on a variety of pavement types. This information is stored in a database that can be used by pavement engineers and researchers worldwide to advance the science of pavement engineering.