Why does the escalator handrail in the subway moves faster steps
Why does the escalator handrail in the subway moves faster steps
So, the crux of the matter is that on the escalators short-haul passengers on the metro (usually) just do not have time to feel the steps and the handrail are moving at different speeds. The fact that the difference between their speed is often not that big. However, it is made like did not just. In order to "feel the difference" take a ride on some really long escalator which goes to the station, for example, lying under the river. The simplest example is the subway station in Saint Petersburg. There is a deep station in Moscow.
Those who had the opportunity to ride the escalator on deep stops, you know that during the ascent (or descent) it is necessary to shift the hand from place to place two to four times. When escalators first came out, the sharp tongue, the townspeople liked to joke that subway passengers deliberately deprived of comfortable travel on a moving staircase, so they didn't fall asleep and didn't relax.
The funny thing is that in some sense, the speed difference between the handrail and treads are made precisely to maintain the passenger in good shape. The fact is that if the pen was moving at the same speed, the output from the escalator commuters would fall into a traumatic situation. Blame the inertia on the output from the traveling steps the speed of the body is quite high. If convergence is not to let the hand with the tape, it's easy to lose your balance and fall, but only under the condition that the handrail moves at the same speed as the steps. People simply would not have time to open it.
For this reason, the handrail moves from two to 5 percent faster steps. These indicators are outlined in the technical regulations of the relevant equipment underground. Thus, the hand always slightly ahead of the body and the person has a few extra seconds to lower the arm. In addition, there are many people who have the repetitive motion may begin to feel dizzy and even stroke motion. Desynchronization of mobile elements allows to avoid this.
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