ABA Accessibility Standard for GSA Facilities Pocket Guide
503 Passenger Loading Zones
Passenger loading zones shall provide a vehicular pull-up space 96 inches (2440 mm) wide minimum and 20 feet (6100 mm) long minimum. [ECTCR UFAS 4.6.5]
Passenger loading zones shall provide access aisles complying with 503 adjacent to the vehicle pull-up space. Access aisles shall adjoin an accessible route and shall not overlap the vehicular way. [ECTCR UFAS 4.6.5]
Access aisles serving vehicle pull-up spaces shall be 60 inches (1525 mm) wide minimum.
Access aisles shall extend the full length of the vehicle pull-up spaces they serve.
Access aisles shall be marked so as to discourage parking in them.
Figure 503.3 Passenger Loading Zone Access Aisle
Vehicle pull-up spaces and access aisles serving them shall comply with 302. Access aisles shall be at the same level as the vehicle pull-up space they serve. Changes in level are not permitted. [ECTCR UFAS 4.6.5]
EXCEPTION: Slopes not steeper than 1:48 shall be permitted.