2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017

11B-812.5.3 Relationship to accessible routes.

Vehicle spaces and access aisles shall be designed so that when the vehicle space is occupied the required clear width of adjacent accessible routes is not obstructed. A curb, wheel stop, bollards, or other barrier shall be provided if required to prevent encroachment of vehicles over the required clear width of adjacent accessible routes.