The project is complete.  The researchers reviewed common preservation treatments and their influence on the pavement performance indicators identified in the .Based on this work, the researchers presented approaches for considering pavement preservation treatments in the design and analysis process.The report will be considered for incorporation in the that will be developed under NCHRP Project 1-46. The report has been forwarded AASHTO staff to make it available to the chair and members of the AASHTO Highway Subcommittee on Maintenance, the AASHTO Joint Technical Committee on Pavements, and other interested parties.  (NCHRP staff: A. N. Hanna).