Commuters hang onto an overcrowded suburbun railway train on the Central Railway (CR) line in Mumbai . Two people were killed and around 10 were injured when they fell off a moving suburbun train on the CR line. Thousands of commuters in Mumbai had a harrowing time as services on the Central Railway line were thrown out of gear following a fire in a signal cabin between two suburbun railway stations on Tuesday night causing heavy damage to signalling gears. Mumbai's suburban trains or "locals" carry an estimated seven million people every day and are a lifeline in an overcrowded city with traffic-clogged, potholed roads. Train doors are normally open to the elements to combat high temperatures and humidity, with many travellers also hanging out of carriages or perching between them.