If you live in or around an urban a

If you live in or around an urban area, you may have access to a mass transit rail system, such as a subway or metro train system. Although bus routes usually have more stops and accessibility, mass transit rail systems don’t have to deal with traffic congestion from the road, and can therefore be faster than the bus.
Although when compared to a bus system, mass transit rail systems have high initial costs, but cities generally find them to be a good long-term investment. Rail systems can carry more passengers per vehicle than buses and produce less noise and air pollution.