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People are just realizing important reason why escalator steps have grooves on them
While a self-proclaimed escalator expert said: "The grooves on escalator steps are there to improve traction and safety for ...
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Pictured: The world's shortest escalator, which has just five steps and a journey time of six seconds
Located in the Okadaya More shopping centre in Japan's Kawasaki-Shi region, the tiny escalator - known as the Petit Calator - is just 83.4cm/2.8ft high, has only five steps and provides a ride lasting ...