His design, called the “revolving ... a hollow structure that runs the length of the escalator and supports the straight sections of the track. The tracks guide the movement of the steps.
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From upside-down trains to outdoor escalators: Here are some of the world’s most unusual modes of transportThe unusual track design allows passengers to travel over ... are said to be considering using the maglev technology. Escalators are not what you would associate with hillsides.
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