One or more elevators can be more efficiently controlled by considering the then-current spatial capacity of the elevator. Camera images or other sensor data indicative of the occupied space in the elevator are received and processed by a control device to determine whether or not the elevator should stop at a requested floor. If the elevator is determined to lack space for additional passengers, then the elevator can bypass the requested stop and proceed without delay. If space remains, however, the elevator can stop to accommodate additional passengers. Measured spatial capacity can also be used to coordinate the actions of multiple elevators operating within a building.