River/New Bedford line, which opened Monday, has been in the works for decades and has cost billions. The post 3 things to know about the new rail line connecting southeastern Mass. to Boston appeared first on Boston.

The MBTA’s South Coast rail begins service Monday, shuttling riders from Boston’s South Station to Taunton, Fall River and New Bedford. Those three communities were the only “major cities” within 50 miles of Boston that were not serviced by the Commuter Rail — until Monday.

The MBTA's brand new commuter rail started service Monday morning. WBZ TV's Penny Kmitt spoke to passengers at the new station in Middleboro.