49 CFR Part 37 - Transportation for Individuals With Disabilities at Intercity, Commuter, and High Speed Passenger Railroad Station Platforms; Miscellaneous Amendments

§ 37.3 Definitions.

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Direct threat means a significant risk to the health or safety of others that cannot be eliminated by a modification of policies, practices, procedures, or by the provision of auxiliary aids or services.

Wheelchair means a mobility aid belonging to any class of three- or more-wheeled devices, usable indoors, designed or modified for and used by individuals with mobility impairments, whether operated manually or powered.