Guidelines are presented regarding accessibility to buildings and facilities, transportation facilities, and transportation vehicles by individuals with disabilities, under the Americans with Disabilities Act of 1990. These guidelines are to be applied during building design, construction, and alteration. Part 1 offers detailed facility specifications, which include diagrams, for: space allowance and reach ranges, accessible route, protruding objects, ground and floor surfaces, parking and passenger loading zones, curb ramps, stairs, elevators, wheelchair lifts, window and doors, entrances, drinking fountains, water closets, toilet stalls and urinals, lavatories and mirrors, bathtubs and shower rooms, sinks, storage, handrails, controls and operating mechanisms, alarms, detectable warnings, signage, telephones, fixed or built-in seating, assembly areas, dressing rooms, restaurants and cafeterias, medical care facilities, and libraries. An appendix to Part 1 contains materials of an advisory nature and provides information to explain minimum requirements of the guidelines. Part 2 covers the following types of vehicles: buses, vans, rapid rail vehicles, light rail vehicles, commuter rail cars, intercity rail cars, and over-the-road buses. (SW)