What is necessary to automate the closing of the doors? I imagine that a timer coupled with computer vision software would be more than adequate to solve this p

What is necessary to automate the closing of the doors? I imagine that a timer coupled with computer vision software would be more than adequate to solve this problem. Furthermore, you could have the timer duration set automatically via machine learning tied to many dimensions, such as: (1) Number of humans or Volume of humans plus accessories waiting at the platform. (2) Duration until next train (3) Historical business for that station at that time of day on that day of the week (4) Historical figures of the number/volume of humans that enter and exit the train at that time of day on that day of the week.