A developmental disability is a severe chronic disability which: 1) Is attributable to a mental or physical impairment or combination of mental and physical impairments; 2) Is manifested before age twenty-two; 3) Is likely to continue indefinitely; 4) Results in substantial functional limitations in three or more areas of major life activities: self-care, receptive and expressive language, learning, self-direction, capacity for independent living, economic sufficiency; and 5) Reflects the need for a combination and sequence of special interdisciplinary or generic care, treatment, or other services, which are life long, or of extended duration and individually planned and coordinated.

Any airline, ground transportation, and accommodations services that provide accessibility for persons with disabilities.

The equipment and supplies that help persons with physical, sensory, or mental impairments that can make performing an everyday task more difficult. Some disabilities, such as a broken hip, may be temporary; others are relatively minor, such as vision impairments that can be modified by corrective lenses. Other disabilities classified as severe may not represent a handicap—that is, the inability to take part in community life on an equal level with others. For instance, a person confined to a wheelchair may be able to live independently if physical and social barriers to mobility have been removed.