Preliminary studies were carried out to determine possible differences between AASHTOWare Pavement ME Design, MEPDG (version 1.1) and DARWin-ME (version 1.1) performance predictions for new Jointed Plain Concrete Pavement (JPCP), new Hot-Mix Asphalt (HMA), and HMA over JPCP pavement systems. Although the core design process and computational engine have remained the same over the years, some enhancements to the pavement performance prediction models were implemented along with other documented changes as the MEPDG transitioned to the AASHTOWare Pavement ME Design. The MEPDG was subsequently renamed the DarWin-ME in April 2011 and, most recently, marketed as the AASHTOWare Pavement ME Design as of February 2013. The Mechanistic Empirical Pavement Design Guide (MEPDG) was developed under the National Cooperative Highway Research Program (NCHRP) Project 1-37A as a novel mechanical-empirical procedure for analysis and design of pavements.
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