Greater Boston
ACI provides transit, rail, and bus (through Paul Revere Transportation) operations and maintenance services to public and private clients throughout the United States including the Massachusetts Port Authority shuttle service, the Valley Metro light rail system in Phoenix, Arizona, the Tren Urbano in Puerto Rico, the CTRail Hartford Line in Connecticut, and the first two public-private partnership (P3) transit projects in the country for the RTD Commuter Rail in Denver, Colorado and the Purple Line light rail system in Maryland