Prior to consolidation of transportation services under the Washtenaw Intermediate School District (WISD) in 2010, the Ann Arbor Public Schools (AAPS) owned and maintained the school bus fleet that is still stored in the large lot behind the Balas Building, Balas is the main headquarters for AAPS, located at 2555 S. State Street (at the far northern end of Boardwalk Street). The vehicles are visible from points on S. State Street and S. Industrial Blvd.