What are the metrorail versus subway pros and cons for a city?

Subway, cons: Subway more expensive, Pros: Subway goes faster and doesn't take stops, Metro, Pros:Metro cheaper Cons : Takes more stops.

Explanation:

Metro is cheaper because its $1 but it takes stops so people will spend money but also, it uses gas so its bad for the environment, Subway costs more for people, but it uses electricity so gas doesn't hurt the environment and it goes faster.