Escalator policy abandoned due to safety, maintenance

Many Chinese cities have abandoned the "Stand right, walk left" subway escalator policy, which is generally considered basic courtesy, due to safety concerns.

According to Nanjing Subway Group, about 95 percent of the city's subway escalators are severely worn down on the right side, which could lead to malfunctions.

Shi Dajiang, an officer at Nanjing Public Security Bureau's subway branch, said the height of the escalator steps poses a danger to people who walk or run.