American Railway Engineering and Maintenance of Way Association Annual Conference & Expo, the development and advancement of both technical and practical knowledge and recommended practices pertaining to the design, construction and maintenance of railway infrastructure. Each of the four groups that came together to form AREMA have, in their own way, built an excellent foundation upon which to base AREMA, whose mission is the development and advancement of both technical and practical knowledge and recommended practices pertaining to the design, construction and maintenance of railway infrastructure.