Formerly known as the "Ann Arbor/Ypsilanti Urbanized Area Transportation Study", or "UATS", WATS is an intergovernmental group that facilitates regional cooperation in transportation policy decisions. In order to acquire and use certain types of Federal transportation funding, the area is required to have some sort of "continuing, cooperative and comprehensive transportation planning process"; WATS is the agency that serves this purpose in Washtenaw.
705 N. Zeeb Rd | Ann Arbor, MI 48103 | Phone 734-994-3127
WATS website: http://www.miwats.org/
The WATS Policy Committee includes representatives from the Washtenaw County Board of Commissioners, Washtenaw County Road Commission, AATA, University of Michigan, MDOT, and many of the Cities, Villages, and Townships around the County, and is responsible for creating long-term regional transportation plans and short-term detailed funding and implementation plans.
Ironically, WATS is stuck with the Washtenaw County Planning and Environment Department at the County's Zeeb Road location - the County-level agencies which should be most concerned with intelligent transportation and land use decisions have been pushed into completely auto-dependant office space.
Among other resources, WATS provides online access to the most recent local traffic counts performed by the Road Commission, City of Ann Arbor, and other agencies.