The elevator in the us are using "security period"?
Elevator safety approval identification is out-of-date, judge a lift this is whether there is a safety hazard in the most direct way. But in a random survey found that 20 members of the public, there were 15 people in the elevator, do not pay attention to these signs posted on the elevator. About Elevator Safety did not seem to care. Especially in commercial plazas, many people rushed to grab a lift on often overcrowded alarming phenomenon.