Perfect view of Driverless & Automatic Metro (Lille Metro)

First of all, Happy Deepavali to you! :) I live in Lille and it has one of the earliest forms of automatic metro systems. This is completely automatic, there are no drivers and the frequency is as good as 60 seconds. I'm still trying to understand how exactly it works but it shouldn't be too difficult to understand since this is a very old system built in the mid 80s!! The company operating this system is building a new line but it is taking time because they want it to be completely automatic and the company (Alstom) is facing challenges.