This reminds me of an elevator's "Door Close" button. Manufacturers still include them for the peace of mind of passengers, despite computerized systems and many area laws (in the US, the ADA has language regarding door-open timespan for wheelchair access).
EDIT: Thanks to a_c_s for pointing out that the button can work when the elevator is in emergency/service mode. More fun information on elevators, crosswalk and other buttons can be found here: https://www.nytimes.com/2016/10/28/us/placebo-buttons-elevat...
EDIT: Thanks to a_c_s for pointing out that the button can work when the elevator is in emergency/service mode. More fun information on elevators, crosswalk and other buttons can be found here: https://www.nytimes.com/2016/10/28/us/placebo-buttons-elevat...