The purpose of these programs is to promote carpooling and vanpooling, particularly for the work commute trip, thus reducing energy consumption, traffic congestion, and air pollution. Carpooling uses private vehicles for shared travel. Costs, meeting points and other details are discussed and agreed on. Carpoolers then meet and carry out their shared trip(s) as planned. Carpooling is commonly used for commuting, but is also popular for longer leisure trips. The MichiVan Program provides commuter vans to qualified groups of seven or more persons. These vans are self-supporting except for marketing and capital costs. This program meets transportation demands where public transportation is unavailable or is unsuited to commuter travel needs.