Traffic Light App
Hi, we are looking for an existing app that helps us with the following: our business is located at the end of a very long and remote dirt track which only allows 1 car at a time. Since we have clients, providers etc. going up and down the track all day we need a system that allows anybody to announce that they are on the track so as to avoid that others enter the track and they meet without being able to pass. We are thinking about an app (android and apple) designed as a sort of traffic sign where drivers (anyone) can turn the light on red when they enter the track and change it back to green as they leave the track. This info would need to be visible to anyone else in real time. Is there something similar that already exists? In case not, can it be developed?