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