One of the metro’s escalators is running slowly? That is because it is in idle mode to further extend its service life.
Have you noticed? When no one uses the escalator in the metro for a while, it slows down. And as soon as someone steps onto it, his presence is detected, signalling for a gradual return to the escalator's normal operating speed.
Several specially marked metro escalators are fitted with this energy-saving device, as it is designed to extend its service life, while lowering maintenance and electricity costs.
All escalators will eventually be energy-saving escalators.
Another smart thought, another small action.
http://mouvementcollectif.org/SWF/?en/# ... escalators
如果 MTR 咁做就好,有時啲站迫到嘔都無扶手電梯用
有時好似銅鑼灣、九龍塘呢啲大站無人用扶手電梯就係咁郁