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ANNUAL REPORT 2018 T he National Cooperative Highway Research ProgramâNCHRPâhas provided research-based solutions to challenges faced by state transportation agencies since 1962. The Board of Directors of the American Association of State Highway and Transportation Officials (AASHTO) sets the direction and focus of research conducted by NCHRP. The Transportation Research Board (TRB) and the U.S. Federal Highway Administration (FHWA) partner with the state departments of transportation (DOTs) to deliver research results in the form of new or improved specifications, standards, practices, and processes that states use every day. During 2018, NCHRP completed 150 research projects, published 68 research products, and approved 58 new and continuation projects. This Annual Report provides a concise list of research published in 2018 (Table 1) and a list of all active projects, projects completed in 2018, and projects that were approved in 2018 but are not yet under contract (Table 2). The Annual Report also presents detailed information about how NCHRP operates with oversight by the AASHTO Special Committee on Research and Innovation (R&I). The NCHRP Annual Report supersedes the Summary of Progress, which was published in hard copy for the last time in 2014. The Summary of Progress documented all NCHRP projects since the inception of the program in 1962. While it provided a useful reference, this information is now readily available on the TRB and NCHRP websites. Therefore, the new annual report series focuses on activities conducted in the current year. See the search tips (on page vi) for information on how best to locate NCHRP research and publications online. NCHRP National Cooperative Highway Research Program
