28 CFR Part 36 Nondiscrimination on the Basis of Disability by Public Accommodations and in Commercial Facilities (2010 ADA Title III Regulations with amendments issued through Dec. 2016)

(c)

(1) Inquiry about disability. A public accommodation shall not ask an individual using a wheelchair or other power-driven mobility device questions about the nature and extent of the individual´s disability.

(2) Inquiry into use of other power-driven mobility device. A public accommodation may ask a person using an other power-driven mobility device to provide a credible assurance that the mobility device is required because of the person's disability. A public accommodation that permits the use of an other power-driven mobility device by an individual with a mobility disability shall accept the presentation of a valid, State-issued disability parking placard or card, or State-issued proof of disability, as a credible assurance that the use of the other power-driven mobility device is for the individual´s mobility disability. In lieu of a valid, State-issued disability parking placard or card, or State-issued proof of disability, a public accommodation shall accept as a credible assurance a verbal representation, not contradicted by observable fact, that the other power-driven mobility device is being used for a mobility disability. A "valid" disability placard or card is one that is presented by the individual to whom it was issued and is otherwise in compliance with the State of issuance's requirements for disability placards or cards