The American Disabilities Act requires that one out of every six parking spaces, or a fraction of total accessible parking spaces, be designated as "van-accessible" handicap parking spots. Medical facilities must designate a minimum of 10 percent of parking spaces as handicap accessible. Parking spaces for the handicapped must be identified with the International Symbol of Accessibility, which is a stick figure sitting in a wheelchair. There are some exceptions regarding handicap parking space signage.
The ADA National Network provides an online Accessible Parking guide at its website, adata.org, which is useful for determining the number of handicap parking spaces required. It recommends designating one parking spot as handicap accessible out of a total of 25 parking spaces. Parking lots that have 76 to 100 parking spaces available must designate a minimum of four parking spaces for handicap use. In addition, handicap parking spaces must be situated as close as possible to building entrances. If there is more than one building entrance, handicap parking spaces must be divided among each entrance to ensure that handicapped individuals have easy access options.
Handicap parking spaces are typically 8 feet or 11 feet wide and have a 5-foot wide access aisle. The extra space is useful for deploying wheelchair lifts and mobility devices that assist handicapped individuals with exiting or entering the vehicle.