The Massachusetts Bay Transportation Authority operates subway, bus, commuter rail, and ferry service in the Greater Boston region. Boston has some of the highest rates of non-motorized commuting in the United States, including high bicycle usage.[1] The MBTA offers certain provisions for riders wishing to make part of their trips by bicycle. The agency allows bicycles to be carried on all fixed-route services except the Green Line and the Ashmont-Mattapan High Speed Line light rail lines, although they are restricted on the commuter rail and heavy rail subway services at peak hours. Bicycle storage areas are offered at many stations, with "Pedal and Park" locking bicycle cages at certain high-usage stations.