Signs that provide direction to or information about functional spaces must meet requirements for character proportion, sign finish and contrast. The cap height is not specified, but characters and numbers on signs must be sized according to the viewing distance from which they are to be read. Identifiers of Accessible Facilities . The international symbol of accessibility must be displayed at accessible entrances if all entrances are not accessible. Directions including the symbol must be provided from inaccessible entrances to accessible ones.
Similar guidelines apply to restrooms.
Public Telephones . Text telephone must be identified with the TDD symbol. Volume control telephones must be identified by the volume control telephone symbol. Where all telephone banks are not so equipped, directions must be provided to equipped ones. Stairwell Code Signs .