28 CFR Part 35 Title II Notice of Proposed Rulemaking (NPRM) (published 2008)

(g) Assembly areas.  Assembly areas subject to the proposed standards shall comply with the provisions applicable to assembly areas, including, but not limited to, sections 221 and 804.  In addition, assembly areas shall ensure that -

(1) Wheelchair and companion seating locations are dispersed among all levels of the facility that are served by an accessible route;

(2) Wheelchair and companion seating locations are not located on (or obstructed by) temporary platforms or other movable structures.  When wheelchair seating locations are not required to accommodate people who use wheelchairs, individual, readily removable seats may be placed in those spaces;

(3) Facilities that have more than 5,000 seats shall provide at least five wheelchair locations that are configured to provide at least three companion seats for each wheelchair space; and

(4) Stadium-style movie theaters locate wheelchair seating spaces and companion seating on a riser or cross-aisle in the stadium section that satisfies at least one of the following criteria:

(i) It is located within the rear sixty percent (60%) of the seats provided in an auditorium; or

(ii) It is located within the area of an auditorium in which the vertical viewing angles (as measured to the top of the screen) are from the 40th to the 100th percentile of vertical viewing angles for all seats as ranked from the seats in the first row (1st percentile) to seats in the back row (100th percentile).