Moving Staircase To Transport People . Stock Photo

Invented in 1859 in Massachusetts, Escalators carry people between floors of buildings or structures, it consists of a motor driven chain of individually linked steps on a track they are used around the world where in places lifts would be impractical, they have the capacity to move large numbers of people. Most countries require escalators to have moving handrails that keep pace with the moving bed as a safety measure.