AASHTO LCG-1, Guide for the Local Calibration of the Mechanistic-Empirical Pavement Design Guide (November 2010), provides guidance for calibrating the Mechanistic-Empirical Pavement Design Guide software to local conditions, policies, and materials. The guide gives the highway community a state-of-the-practice tool for the design of new and rehabilitated pavement structures based on mechanistic-empirical principles. The design procedure calculates pavement responses, including stresses, strains, and deflections, and uses those responses to compute accumulated damage and distress over the pavement design life. Local calibration adjusts the default models and inputs of the software so that predictions reflect local conditions. Calibration is a necessary step for agencies adopting the mechanistic-empirical approach because national defaults may not represent their materials, climate, and construction practices. Pavement engineers in highway agencies and their consultants can use the guide when implementing local calibration.