Elevator Etiquette

Have some situational awareness in public please: it is expected that you hold elevator doors until the elevator is full and you are sure nobody else needs to get on. It's rude and inconsiderate to let the doors close when there are only a couple people on a mostly empty elevator. I missed two elevators in a row that I was actively trying to board in Alkek because a handful of students got on, then immediately stopped paying attention/let the doors close. A person in a wheelchair was also trying to board them and missed them for the same reason. Do better, folks.