People in Chennai depend heavily on the railways to commute locally from one part of the city to another, which plays a significant role in their daily lives. However, it is quite challenging to obtain when opting between Chennai's two main passenger railways because there are a number of variables that influence their choices. The Chennai Suburban Railway and the Chennai Metro Rail Limited (CMRL) are the two most often used passenger rail networks in Chennai. The Chennai Suburban Railway has four distinct rail lines, and the CMRL has two metro lines that span the city. These two kinds of passenger railways are exploited not merely by residents of Chennai but also by tourists, visitors from bordering states, merchants, and other individuals. The main objective of the survey is to assess the key variables that influence people's decisions among the two passenger railways, the Chennai Suburban Railway and the CMRL. The purpose of this research is to establish the challenges that travelers on passenger trains encounter while also examining the disparities seen between two passenger railways. Despite the differences between the two, it is possible to address the issues and achieve superior management on both passenger railways with the help of this research. With the sample of 240 passengers the outcome will assist in identifying the key factors influencing Chennai's decision between the two passenger rail options, and along with that, a comparative study between CMRL and Chennai Suburban Railway is made.