Flashing sign

A flashing sign is a sign that contains a sequential flashing light source where the period of time of illumination is equal to the period of non-illumination, and is used solely to attract attention in a non-informative way.

The light can be intermittent or flashing , scintillating , blinking or traveling which give an illusion of flashing or intermittence or as an animation.[1]

References
  1. Wyckoff, Mark A. (1989). Sign Regulation: An Overview of the Issues and Alternatives. MSPO.

See also
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