49 CFR Part 37 - Transportation for Individuals With Disabilities; Reasonable Modification of Policies and Practices

23. Extreme Weather Assistance.

A passenger's request to be assisted from his or her door to a vehicle during extreme weather conditions should generally be granted so long as the driver leaving the vehicle to assist would not pose a direct threat, or leave the vehicle unattended or out of visual observation for a lengthy period of time. For example, in extreme weather (e.g., very windy or stormy conditions), a person who is blind or vision-impaired or a frail elderly person may have difficulty safely moving to and from a building.