New York City Transit (NYC Transit) is viewed as the world’s most expansive subway system due to its 468 subway stations, the most of any transit system in the world. It is also one of the world’s busiest subways, transporting 1.6 billion passengers annually. While the system emits 2 million tons of greenhouse gases each year, it prevents approximately 17 million tons of greenhouse gases annually, ‘making it one of the biggest sources of greenhouse gas avoidance in the United States.’