A. Visual Display Systems. Announcements may be provided in a visual format by the use of electronic message boards or video monitors.
Electronic message boards using a light emitting diode (LED) or “flip-dot” display are currently provided in some transit stations and terminals and may be usable in vehicles. These devices may be used to provide real time or pre-programmed messages; however, real time message displays require the availability of an employee for keyboard entry of the information to be announced.
Video monitor systems, such as visual paging systems provided in some airports (e.g., Baltimore-Washington International Airport), are another alternative. The Architectural and Transportation Barriers Compliance Board (Access Board) can provide technical assistance and information on these systems (“Airport TDD Access: Two Case Studies,” (1990)).
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