(i) an individual is eligible under this paragraph with respect to travel on an otherwise accessible route on which the boarding and disembarking location which the individual would use is one at which boarding or disembarking from the vehicle is precluded as provided because the vehicle's wheelchair lift or other boarding device cannot be deployed; or the lift or device would be damaged if deployed; or temporary conditions at the location, not under the authority's control, preclude safe use of the stop by all passengers;

(ii) an individual using a common wheelchair is eligible under this paragraph if the individual's wheelchair cannot be accommodated on an existing vehicle, even if that vehicle is accessible to other individuals with disabilities and their mobility wheelchairs;

(iii) with respect to the rapid transit system, an individual is eligible under this paragraph if the individual could use an accessible rapid transit system, but there is not yet one accessible car per train on the system; or key stations designated in the authority's Key Station Plan have not yet been made accessible; or

(i) only a specific impairment-related condition which prevents the individual from traveling to a boarding location or from a disembarking location is a basis for eligibility under this paragraph. A condition which makes traveling to a boarding location or from a disembarking location more difficult for a person with a specific impairment-related condition than for an individual who does not have the condition, but does not prevent the travel, is not a basis for eligibility under this paragraph; and

(ii) architectural barriers not under the control of the authority and environmental barriers (e.g., distance, terrain, weather) do not, standing alone, form a basis for eligibility under this paragraph. The interaction of such barriers with an individual's specific impairment-related condition may form a basis for eligibility under this paragraph if the effect is to prevent the individual from traveling to a boarding location from a disembarking location.

(i) if the ADA-paratransit-eligible individual is traveling with a personal care attendant, the authority shall provide service to one other individual in addition to the attendant who is accompanying the eligible individual;

(ii) a family member or friend is regarded as a person accompanying the eligible individual, and not as a personal care attendant, unless the family member or friend is acting in the capacity of a personal care attendant;