MBTA system map - Google My Maps
https://www.google.com/maps/d/viewer?mid=1Izk7W_dIJBInjRfFOZ11OC3YVQU
WEBHere it is. This is a map of the transit routes operated by the Massachusetts Bay Transportation Authority in Boston, Quincy, Somerville, Cambridge, Revere, Brookline, …
DA: 11 PA: 61 MOZ Rank: 33