2013 California Standards for Accessible Design Pocket Guide

11B-411.2.1.2.4 Display screen.

Upon activation of the accessibility function button, the display screen shall display information on the location and use of the star (*) and minus sign (-) buttons, user input confirmation, elevator assignment characters, direction to the assigned elevator, and error messages. The display screen shall comply with Section 11B-411.2.1.2.4.

11B-411.2.1.2.4.1 Contrast.

Display screens shall provide contrast with light characters and symbols on a dark background or dark characters and symbols on a light background. The background shall be solid and static.

11B-411.2.1.2.4.2 Size.

Elevator assignment characters shall be 1 inch high (25 mm) minimum.

11B-411.2.1.2.4.3 Duration.

Elevator assignment characters shall be displayed for a minimum of 5 seconds.