Escalators that are normally manufactured and passed the acceptance should not have such a tragedy. However, such a thing happened, probably because it didn't follow the safety regulations when its structure changed.
Since 1892, the escalator has been patented. Not much change. Every time you step on or leave the escalator, it is a big adventure, especially when the steps of the escalator disappear under our feet. At this time, all kinds of clothes or a certain part of your body may get stuck on the escalator. In recent years, escalator accidents are common.
The designer of the escalator still designed an insurance (which may not be very efficient). No matter up or down, there should be a red emergency stop button under one side of the escalator. Generally, the button position is selected in a place that will not be easily triggered, but it is actually relatively easy to find as long as you pay attention carefully.
Button style:
When it is confirmed that someone is involved in the elevator, people around you should quickly find this button and press it decisively.
But in non-emergency situations, don't press this button by mistake or playfully, otherwise the emergency stop will easily cause passengers to fall, roll over or trample. There are many cases of personal injury accidents caused by pressing the emergency stop button by mistake. Only when you are sure that someone is involved should you press it decisively.
In view of the fact that it is not uncommon for people to be involved in escalators, once it happens, the loss will be very large. Therefore, emergency training should also be given to service personnel in public places where escalators are installed.