It is the oldest railway system in Asia, launching April 16, 1853, with the first train taking a one-and-a-half hour journey between CST (then Bori Bunder) to Thane, with a halt at Sion to refuel.
It has one of the most outdated electric rail system in the world. The Mumbai rails still run on electricity transmitted through overhead wires instead of a third rail.
Mumbai local trains are optimized to carry an average of 1,700 people per journey, but in actuality a train will carry almost 5,000 on average during peak hours (this fact is termed as Super Dense Crush Load). With a total of 7.5 million people in 2,342 trains that run daily, that means 2.7 billion people use the trains every year.
The engines of the Mumbai local have a short rest period. They will only stop working for 3-4 hours per engine because the Mumbai locals remain closed for a period of just 90 minutes per day. This makes it the busiest public transportation system in the world.
The Mumbai railway is the cheapest mode of transport in the city. Not only is the network spread across 465 kilometers, but the most expensive ticket only costs 30 Rupees (roughly 50 cents USD).
Without the Mumbai locals, most of the city would go hungry. The efficient and world famous dabbawala system of delivering food in Mumbai primarily relies on the Mumbai local trains.
Those traveling to Borivili on a daily basis would be aware of an invisible station called Thambewali that comes between Kandivali and Borivili station. While not an official stop, every train stops for a few minutes and people do get off the train here. (Every single train stopping here … sounds spooky, doesn’t it?)
For some reason, the first ladies coach near the motorman’s coach is called the Video Coach (maybe because of the small window between the ladies and gents compartments).
The Mumbai local trains are unbeatable and unstoppable under any circumstances. Even when they were attacked on July, 11, 2006, the system kept operating. Despite the serial blasts that threatened to paralyze the locals, the trains were still functional to a certain extent and were fully functional within 16 hours.