The Commutation Rails- while much attention is naturally given to the long distant trains, many major cities developed extensive commuter rail systems. The biggest were and still are in New York and Chicago. In New York the LI railroad, the New Haven and the New York Central each brought tens of thousands of commuters daily from the New York suburbs. The trains made possible the existence of suburbs. In New York and certain other cities the automobile could did not replace the train as the most important method of commuting. The railroads as all gone, but the government agency the Metropolitan Transit Authority has taken over the running of all these rails.