The New York City subway system was commissioned in 1904 and is currently ranked among the world’s largest, most sophisticated, and oldest urban railway systems. The NYC subway system comprises 26 services that operate on more than 35 different lines. Furthermore, the subway system has 472 stations and a total track length of 728 miles. The system serves approximately 5.7 million people each week through its two separate divisions that are made up of incompatible tunnel, station and rolling stock dimensions. The subway plays a significant role in the economy of New York City and the lifestyle of its citizens. Studies show that more than 60 percent of all individuals entering the Manhattan Central Business District during peak hours (7 to 10 am) use the NYC subway system. Other Individuals entering Manhattan CBD using buses and commuter rails from Long Island, New Jersey, Connecticut, and the Lower Hudson Valley reach their final destination using the NYC subway system. The NYC subway system, therefore, has offered affordable and reliable transportation means to millions of schools and jobs. Unfortunately, the efficiency of the NYC subway system has considerably declined over the years because of the deterioration of its facilities and services. Metropolitan Transportation Authority (MTA), therefore, has invested $37.3 billion to upgrade and expand the NYC subway system.