[header] How to ride an elevator [title] Press the " up " or " down " button. [step] When you arrive to the elevator, decide which way you are going and be ready to wait. An elevator's arrival time can be affected by many factors such as elevators' traffic, the amount of floors, rush hours, and available elevators due to unforeseen maintenance or closures. 
[title] Allow any people to leave before entering. [step] This etiquette is practiced in a lot of public situations such as subways or buses, and elevators are no different.