Elevator Indicators: Elevator Occupancy Lights

The issue:

When an elevator arrives, it’s not instantly clear if there are people inside it. If there aren’t, it’s acceptable to instantly rush the elevator. But if there are people inside, they’ll need to leave first.

elevator_blank

The solution: a light on the doors that indicate whether the arriving elevator is occupied or not. Or you could even have just a small window.

elevator_down_occupied

Bonus secondary solution: the doors themselves could indicate whether the elevator is going up or down.

elevator_up

PROS: Impatient elevator boarders would no longer crash into debarking passengers.

CONS: Naturally, none!