The typical symbols for operating lift doors are:
Door open: ◄ | ►
Door close: ► | ◄
More examples here.
They look confusingly similar, especially at times of emergency. Have you ever pressed the wrong button, closing the door on someone who is trying to get into the lift?
I am not sure if there is a certain ISO standard for lift door buttons, mandating everyone to use these symbols. But if there are none, how would you improve on the design of these door buttons?
Answer
I would add some clear reference to the doors. Something like that (bad and quickly sketched of course): 
That makes (at least for me) easier to understand what's going to happen when pressing them (by representing the state they are and the state they are going to be)
EDIT: Considering @Code Maverick's comment, that makes sense, another option would be:
No comments:
Post a Comment