In particular, supermarkets are notoriously bad about providing public toilets. One of the worst situations is a tourist or shopping area consisting primarily of smaller shops, stores or restaurants which feel that each is too small to provide public restroom facilities. For example, it is very difficult to find public restrooms in San Francisco's Chinatown and in the French Quarter in New Orleans. The downtown area in smaller communities frequently provides similar problems. Highways Most rail transportation and interstate buses are equipped with adequate restroom facilities.
Commercial aviation is borderline at best.
Most airports provide adequate restroom facilities. However, once on board the aircraft, passengers are excluded from the restrooms for prolonged periods during takeoff and landing. In addition, there are many smaller commercial airplanes with no restrooms at all. One of the major problems in regard to access and mobility is city transit since most city buses and rapid transit cars do not have restroom facilities. While interstate buses and railroad trains have provided restroom facilities for years, the city transit people have discriminated against people who require these facilities.