Boston - Massachusetts Bay Transit Authority

The Massachusetts Bay Transit Authority serves 78 communities within its district of Eastern Massachusetts and another 64 outside of the district through commuter rail trains. There is a total of 181 routes and 252 stations (not including bus stops). There are four principal subway lines designated by the colors red, blue, orange and green. The latter was the first subway line in the US, opening between Park Street to Bolyston Street in 1897.