University of Massachusetts Transportation Services , as a contractor for the Pioneer Valley Transit Authority (PVTA), provides free inter- and intra-campus bus service to students. Most of the routes are centered and serve UMass Amherst, which has over two-thirds of the student enrollment of the Five Colleges, but two routes, Route 38, connects Mount Holyoke College to UMass Amherst via Hampshire and Amherst Colleges, and Route 39 connects Smith and Hampshire Colleges (with some weekday trips and all evening and weekend trips when classes are in session operating to Mount Holyoke College). The buses, operated by student workers from UMass Amherst, run on frequent schedule seven days a week when classes are in session, allowing car-free travel to class and social events. Hourly buses run into the early morning on weekends, an alternative to driving after drinking. This service is funded through a contract with the member institutions. The PVTA also operates two non-UMass Transit routes (the Maroon 40 Minuteman Express, and the Blue-43) that connect UMass Amherst with Smith College via Route 9 . All of these routes are free to ride for students, staff, and faculty of the Five Colleges Consortium.