![]() The button lights up and stays lit to convey via visual feedback that the press has been acknowledged. The passenger presses the button for the floor they wish to go to. On the right-hand side, there is a control panel. Once the passenger is inside, the door closes behind them after a few seconds. Improvements: Provide information about the current location of each elevator and which elevator is coming, so that the user is not kept in complete mystery. Sometimes, the wait time could be as long a 30 seconds, in which case users become frustrated because they don't know whether an elevator is even on its way or not. Moreover, there is no indication about how far an elevator is or how long it would take before it arrives. Shortcomings: The user has no idea which of the two elevators is coming, until one of the elevators actually arrives. If the user does not enter the elevator within approximately 10 seconds, the door will close. At the time of arrival, the upward arrow above the door lights up and a dinging sound is heard. Eventually, and elevator arrives and the door opens for the passenger to enter. Which of the two elevators would arrive is determined by a closed-source algorithm, so either the left or the right elevator could arrive. Provide information about which elevator should the user expect to arrive, and when will that elevator arrive.Īfter pressing the button, the user now waits for the elevator to arrive. If a person presses the "down" button, but then after they enter the elevator press a floor number above the current floor – have an audio or visual feedback indicating to the passenger that their down-call is inconsistent with their wish to go up. Provide clear feedback so that passengers don’t formulate false hypotheses about the behaviors of those buttons. ![]() Improvements: Have clear labels next to the two buttons indicating which button should be pressed when: “Press to Go Up” and “Press to Go Down”. Until an elevator arrives, the user has no idea which of the two elevators is coming, and how long it will take for the elevator to arrive. Every once in a while I see people doing exactly the same wrong that I used to do when younger, without them knowing that they are pressing the wrong button. Moreover, there was no way to validate or disprove this hypothesis by observation because even if I pressed the "down" button when I wanted to go up, an elevator would still arrive. For instance, when I was younger, I thought that the down button needed to be pressed if you expected the elevator to be coming from a floor below the current floor. Shortcomings: Information about the meanings of the buttons is not provided. The vertical position of the buttons is well designed, allowing for highly diverse range of users to access them - from children to elderly and disabled. ![]() This light serves as an indicator to the user that the call has been acknowledged and an elevator is on its way. After the button is pressed, it stays lit until an elevator arrives. The “up” button would be pressed if the passenger wishes to go to a higher floor, and the “down” button if they wish to go to a lower floor. The control panel between the elevators consists of 2 buttons. ![]()
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