2013 California Standards for Accessible Design Pocket Guide

11B-502.6.4.1 .

The parking space shall be marked with an International Symbol of Accessibility complying with Section 11B-703.7.2.1 in white on a blue background a minimum 36 inches wide by 36 inches high (914 mm by 914 mm) . The centerline of the International Symbol of Accessibility shall be a maximum of 6 inches (152 mm)  from the centerline of the parking space, its sides parallel to the length of the parking space and its lower corner at, or lower side aligned with, the end of the parking space length.