I also object to this "international practice".
Security:
1. According to the equivalent European standard adopted by China, the safety standard of escalators is lower than that of vertical elevators.
2. The design of escalator is different from that of stairs, so it is not suitable for moving back and forth on escalator. Even if the escalator stops running, only a 30-degree escalator can be used as an emergency exit.
3. The chances of falling and other dangers will increase.
Design and maintenance costs:
Standing on one side and walking on the other side, the unilateral wear of escalator equipment will increase the maintenance cost, but strengthening the unilateral parts to reduce the maintenance cost will also increase the manufacturing cost.
Transport capacity:
In theoretical calculation, it seems that some people think that when the number of people walking and standing to the left reaches a certain proportion, the transportation of people will be accelerated. There is no problem with the calculation formula, but what is the actual situation? Even in countries where "standing on the left and standing on the right" has been promoted, when people flow for a long time, only two sides can stand and transport at the same time, because in theoretical calculation, the speed of passengers entering and leaving the escalator is often ignored, and passengers will not walk immediately after stepping on the escalator, and only when they are used to the speed of the escalator will they start to walk. This adaptation time, after accumulation, will make the passengers behind unable to walk, thus causing congestion.
Therefore, improving efficiency only appears in theory, and congestion in reality is the best proof to refute this theory.
Humanities:
Is this "left-handed and right-handed" discrimination against people with unilateral arm disabilities?
In terms of implementation:
At present, many countries and regions that implemented the "left line and right line" in the early days no longer advocate this rule. For example, Japan, which has been advocating "standing on the left and standing on the right" for seven years, no longer advocates this practice.
For everyone's safety, I suggest you take the escalator according to the instructions. Hold one or two handrails tightly and don't move back and forth on the running escalator.