The ADA recognizes and protects the civil rights of people with disabilities and is modeled after earlier landmark laws prohibiting discrimination on the basis of race and gender. The ADA covers a wide range of disability, from physical conditions affecting mobility, stamina, sight, hearing, and speech to conditions such as emotional illness and learning disorders. The ADA addresses access to the workplace (title I), State and local government services (title II), and places of public accommodation and commercial facilities (title III). The ADA Accessibility Guidelines (ADAAG) serve as the basis of standards issued by the departments of Justice (DOJ) and Transportation (DOT) to enforce the law. The building guidelines cover places of public accommodation, commercial facilities, and State and local government facilities. The vehicle guidelines address buses, vans, a variety of rail vehicles, trams, and other modes of public transportation.