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The Long-Term Pavement Performance Program
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The Long-Term Pavement Performance Program
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    The goal of the Long-Term Pavement Performance (LTPP) program is to increase pavement life by investigation of various designs of pavement structures and rehabilitated pavement structures, using different materials and under different loads, environments, subgrade soil, and maintenance practices. To make the best use of the LTPP data, some understanding of the history of the program and the decisions that shaped it is needed. Many people and organizations have participated in this extraordinary data collection, analysis, and product development effort. Program decisions have evolved over time to implement what has been learned and to adopt advances in technology. This report was prepared to document the history of the LTPP program as a foundation for future work, to review lessons learned, and to consider how future pavement managers, researchers, and engineers can benefit further from the program. The report is organized in three parts: (1) Building and Managing the LTPP Program;(2) Developing the Studies and the Pavement Performance Database; and (3) Creating Products, Learning From the Past, and Preparing for the Future.

    Distribution number: HRDI-30/09-15(700)E

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