The University has limited access to the central portion of Campus Drive — from the M Circle to the intersection of Cole Field House and Union Drive — for two consecutive four-week periods. From June 19 to July 16, Campus Drive was open only to the Metro buses, Shuttle-UM, emergency vehicles, paratransit vehicles, delivery trucks, facilities maintenance vehicles and construction vehicles. From July 17 to August 13, Campus Drive is closed to Metro bus and Shuttle-UM, leaving access during this period only to internal Campus Connector, paratransit, emergency, construction, delivery and maintenance vehicles. June 19 was chosen as the start date because it followed National History Day — a week-long history competition with many visitors from across the nation that the university hosts annually. By ending the test on August 13, the university will ensure that Campus Drive and all Shuttle-UM/Metro services will be returned to normal before students begin returning for the Fall 2010 semester.