2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017
Interior and exterior signs identifying permanent rooms and spaces shall comply with Sections 11B-703.1 _|Signs; General|_ 11B-703.2 _|Signs; Raised Characters|_, 11B-703.3 _|Braille|_, and 11B-703.5 _|Signs; Visual Characters|_. Where pictograms are provided as designations of permanent rooms and spaces, the pictograms shall comply with Section 11B-703.6 and shall have text descriptors complying with Sections 11B-703.2 and 11B-703.5.
ETA Editor's Note
The Exception at 11B-216.2 does not mention that Braille is also not required at exterior signs that are not located at the door to the space that they serve, but this is inferable from the fact that the requirement for Braille is contained within 11B-703.2, as are the requirements pertaining to the height and location of tactile signs.
[2010 ADAS] Advisory 216.2 Designations. Section 216.2 applies to signs that provide designations, labels, or names for interior rooms or spaces where the sign is not likely to change over time. Examples include interior signs labeling restrooms, room and floor numbers or letters, and room names. Tactile text descriptors are required for pictograms that are provided to label or identify a permanent room or space. Pictograms that provide information about a room or space, such as "no smoking," occupant logos, and the International Symbol of Accessibility, are not required to have text descriptors.