Most trips in U.S. metropolitan regions are drive-alone car trips, an expensive and inefficient transportation form. A more efficient, but often less convenient, system allows drivers to share cars. Carsharing organizations are becoming common throughout Europe and North America. Shared-use vehicles offer a modal alternative that can make metropolitan regions more livable. A shared-use system aims to reduce traffic by reducing the number of cars needed by households and encouraging commuters to walk, bike, and use transit, at least for part of their trips.
