Accessible (Disabled, Handicapped) Parking
Parking and Passenger Loading Zones [4.6]
Accessible parking and passenger loading zones require aisles alongside parking and pull-up spaces so that persons using mobility aids can transfer and maneuver to and from vehicles. Wider aisles are necessary to accommodate vans equipped with lifts, which are often mounted on the side but sometimes the back. Accessibility also includes the appropriate designation and location of spaces and passenger loading zones, their connection to an accessible route, and vertical clearance for vans.
http://www.access-board.gov/adaag/about/guide.htm#Parking
Multiple Entrances
Where multiple public entrances are planned to serve different site arrival points, the 1991 Standards at section 4.1.2(1) and section 206.2.1 of the proposed standards require at least one accessible route to be provided from each type of site arrival point provided, including accessible parking spaces, accessible passenger loading zones, public streets and sidewalks, and public transportation stops, to an accessible public entrance that serves the site arrival point.
Washington Parking
Please see our Parking for People with Disabilities in Washington State fact sheet. PDF DOC