Hall Lanterns [4.10.4]
Audible signals serve people with visual impairments by indicating which car is answering the call and its travel direction. Audible signals sound once for the up direction, twice for down. Visual signals provide this information to people who are deaf or hard of hearing. At least one visible signal must serve each car. A separate fixture for each direction is not required; two-stop elevator cars can be served by one fixture that indicates car arrival. All lanterns must be visible from the vicinity of each set of call buttons serving the elevator. Up and down lantern indicators can be placed one above the other or side-by-side. More than one lantern is not required when located inside cars so long as it is visible from the vicinity of the hall call buttons. (Note that in-car lanterns increase door opening time since timing begins after doors open wide enough for the lantern to be visible).
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