Here’s an older article (March 2022) about the state of the bomb shelters. The concept seems to be somewhat untested and over-optimistic.
According to the article:
In the event of a major disaster such as a Chinese attack, the police are responsible for coordinating evacuations. In Taichung, my friend explained, there are 625 boroughs and the borough wardens are responsible for coordinating the evacuation of the people in their neighborhoods. The disaster plans will be sent down to them, and they will direct people to designated evacuation sites.
Still no mention of exactly how they will open the door, though.
Taiwan_Luthiers mentioned that there were civil exercises going on recently, presumably to get people familiar with and to increase the practical utility of these shelters. Does anyone have any information on the “exercises” currently being conducted?