Stone Matrix Asphalt (SMA) is a relatively new paving mixture in the U.S. which shows promise as a tough, stable, rut-resistant surface mix in certain applications. The Federal Highway Administration (FHWA) established a Technical Working Group (TWG) composed of representatives from Industry, the states, the National Center for Asphalt Technology (NCAT), and FHWA to develop a set of model guidelines for materials and construction. The TWG also undertook the development of a research agenda, to monitor performance on completed SMA projects, and to assist states and contractors in SMA mix design and construction. This publication is a product of the TWG and provides general guidelines for the use of SMA paving mixtures, including composition of an SMA mixture, aggregates and additives, production, hauling and paving, and compaction.