The lower edge of a handicap sign on a parking space must be at least 5 feet above the ground, reports ADA National Network. The height requirement gives motorists and law enforcement personnel appropriate visibility.
Placement of the handicap sign should be chosen to ensure vehicles and other objects do not obstruct the view of the sign, states My Parking Sign. The sign must be visible from the driver seat and placed in clear view of the parking spaces. Appropriate marking of handicap-accessible parking spaces with signs containing the international symbol for handicap access is required to comply with the Americans With Disabilities Act regulations.