TRB’s National Cooperative Highway Research Program has issued a request for proposals to develop a performance-based mix design method for porous friction courses. Proposals are due January 7, 2014.
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2024 SEPPP March 19-21, 2024 Hot Springs, AR
2024 NEPPP May 21-23, 2024 Albany, NY
2024 MPPP September 22-24, 2024 Deadwood, SD
2024 RMWPPP - TBD
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