Chittenden County Transportation Authority (CCTA) is the public transit system headquartered in Burlington in Chittenden County, Vermont. CCTA serves the communities of Burlington, Essex, South Burlington, Winooski, Shelburne, Williston and Milton. As well as providing regular bus routes to these member municipalities, CCTA also services part of Colchester and has express routes for commuters travelling between Burlington and Montpelier, Middlebury, and St.