Wheelchair-accessible, demand-response transportation service. It can also describe subscription bus services, shared-ride taxis, car pooling and van pooling. It is much more flexible than conventional fixed-route transit but generally requires reservations or calling for a specific ride. General paratransit service is not required by law and is not subject to the restrictions imposed on complementary paratransit service. The transit agency may limit the service to certain people, or it may be made available to anyone.