An exit sign is a pictogram or short text in a public facility (such as a building, aircraft, or boat) marking the location of the closest emergency exit to be used in an emergency that necessitates rapid evacuation. Most fire, building, health, and safety codes require exit signs that are always lit.
Exit signs are intended to be unmistakable and understandable by anyone who can see. In the past, this generally meant exit signs that show the word "EXIT"[2] or the equivalent in the local language; increasingly, exit signs around the world are now pictograms, with or without supplementary text.[3]