An escalator is a stairway whose steps move continuously up and down on a circulating belt. It is often used in public infrastructures such as airport, tubes, shop, where the space is very huge in order to permit people to move from one side to another without effort and quickly. Commonly people stand on the right to leave the left side free if someone is in a hurry.
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escalator by Valentina Sannicolo at Cepolina.com, Star rating , Votes:1 , Summary:An escalator is a stairway whose steps move continuously up and down on a circulating belt. It is often used in public infrastructures such as airports, tubes, stores, where the space is very huge in order to permit people to move from one side to another without effort and quickly. Commonly people stand on the right to leave the left side free if someone is in a hurry.
