I used to work in a 50-story building that had banks of elevators, each of which was hard-coded to only visit the lobby and the appropriate range of floors. For example, the first bank would only visit 2-13, the 2nd bank would visit 14-25, etc. The elevator cars only had buttons inside for the floors they were allowed to visit. There were also a couple service&#x2F;freight elevators that could visit all floors (including a couple of service&#x2F;equipment floors that weren&#x27;t reachable at all by the normal elevators), and had a human operator&#x2F;guard who logged badge numbers, floors, and property-removal authorization forms.<p>I think this sort of elevator allocation is fairly common for tall buildings, because it&#x27;s horribly inefficient for people going to the 44th floor to have to wait while people get on and off at all of the 42 floors in between!