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 oversees the advanced freeway network in metropolitan Detroit and Michigan, which includes mass transit with bus services from DDOT and SMART. The coordination of these services is supported by a cooperative agreement on fare and service.