2019 California Standards for Accessible Design Guide (effective January 1, 2020 with July 1, 2021 amendments)
11B-411.4.7 Designations and indicators of car control buttons.
Designations and indicators of car control buttons shall comply with Section 11B-411.4.7.
11B-411.4.7.1 Type.
Control button type shall comply with Section 11B-407.4.7.1.1.
11B-411.4.7.2 Location.
Raised characters or symbols and Braille designations shall comply with Section 11B-407.4.7.1.2.
11B-411.4.7.3 Symbols.
The control button for the emergency stop, alarm, door open, door close, and phone, shall be identified with raised symbols and Braille as shown in Table 11B-407.4.7.1.3.
11B-411.4.7.4 Button spacing.
Button spacing shall comply with Section 11B-407.4.7.1.5.
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