Indian Railways are one of the largest networks in the world which carries millions of people day by day from place to place. Such a big network is very difficult to handle. It has to address all the needs of the travelling population. So from these needs, what should be in the top priority? When we travel from place to place our prime need is to reach safely. So it is the main problem that has to be addressed in an area which is dealing with lot of people’s life. So when we travel in the train, these questions come to our mind. Are we safe in the train? Do the authorities take any measures to make us safe in the travel? If not, what can be done to make that train travel safe? All these questions directed towards the need for a system of safety in the railways. To figure out where the problem lies and how can we solve the problem through design thinking. So this project is aimed at a high level of safety for the Passengers in Indian Railways. And in the journey, the project was focussed into the passenger safety in Mumbai sub-urban rail. Mumbai sub-urban stations, trains, its passengers and their behaviour were studied to focus on a main problem. The gap between the train and the platform was identified as a major problem in the design. A platform gap filler was designed to give maximum safety and to prevent the commuters falling into the gap between the train and the platform while boarding and alighting the trains.