Delhi Metro Rail Corporation is a mass rapid transit system serving Delhi and the National Capital Region (NCR) for over 20 years now. It carries over 5 million passengers daily, making it one of the busiest and most reliable urban transit systems in India. As part of the course, this vast, complex system was decoded, in order to understand it in depth, draw references from the Toyota Production System and then identify few critical leverage points with potential disablers as well. Here is the detailed document for the same.