2013 California Standards for Accessible Design Pocket Guide

11B-1002.4.7.1 Shoulder-to-shoulder seating.

Where an amusement ride provides shoulder-to-shoulder seating, companion seats shall be shoulder-to-shoulder with the adjacent wheelchair space.

Exception:  Where shoulder-to-shoulder companion seating is not operationally or structurally feasible, compliance with this requirement shall be required to the maximum extent practicable.