System ProfileSt. Joseph County Transportation Authority was formed under Michigan P.A. 196 and began service on October 1, 2002. The service was started by combining buses owned by ARCH, Inc. and the Commission on Aging. Until this time, only specialized service was available in the county. By combining both fleets and restructuring under the Authority Act, service was made available countywide. The service provided is both contractual and demand response. The demand response service requires a 24 hour advance reservation.