According to experts, standing only on the right side

of the escalator causes uneven wear on the mechanism because of the u

neven load. Wear and tear on the right side is significantly more than on the left, resulti

ng in a slight tilt of the escalator, which cannot be fixed through regular maintenance.

Experts also warned that walking on escalators in itself is always dangerous.

The height of an escalator step – around 21 centimeters – is highe

r than that of a standard stair, which is around 16 cm. Passengers may miss a step.

Lesley Strawderman, a professor at Mississippi State University, said in an article last m

onth in Quartz, a news organization in the United States, that restricting people to one side of an es

calator limits the amount of space available to commuters and just slows everyone down.

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