The Michigan Department of Transportation (MDOT) administers the advanced network of  freeways in metropolitan Detroit and Michigan. The region offers mass transit with bus services provided jointly by the Detroit Department of Transportation (DDOT) and the Suburban Mobility Authority for Regional Transportation (SMART) through a cooperative service and fare agreement.
The MDOT manages the extensive freeway system in metropolitan Detroit and Michigan, encompassing mass transit through bus services provided by DDOT and SMART. These services are coordinated under a joint agreement for fare and service management.