2010 ADA Standards for Accessible Design Pocket Guide

503.3 Access Aisle.

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. [S.H. 4.6.6]

Figure 503.3 Passenger Loading Zone Access Aisle

503.3.1 Width.

Access aisles serving vehicle pull-up spaces shall be 60 inches (1525 mm) wide minimum.

503.3.2 Length.

Access aisles shall extend the full length of the vehicle pull-up spaces they serve.

503.3.3 Marking.

Access aisles shall be marked so as to discourage parking in them.