We take the subway and often take the escalator when shopping. In front of some escalators, there will be "please stand to the right" signs. An old gentleman was very surprised.

This is not true, because in international practice, when taking the escalator, the left road is vacant for others, such as the aisle for people who are in a hurry. According to the normal walking process, it is not very convenient to go down from the left, generally according to the principle of lower left and upper right. Clockwise.

In fact, a more perfect slogan is: stand firm on the right and cross (rush) on the left.