page_title: Indigo Line
section_title: Indigo lines under consideration
hierarchical_section_title: Indigo Line / Indigo lines under consideration
caption_attribution_description: English: Union Pearson Express arriving at Union Station in Toronto
context_page_description: The Indigo Line is a proposed service of the Massachusetts Bay Transportation Authority that could incorporate parts of the former Grand Junction Railroad, the Seaport District's Track 61, a spur to the Riverside station and other MBTA Commuter Rail lines. Although it has been talked about for years, mostly in relation to the Fairmount Line, the line was formally proposed in 2014 when the MBTA released its five-year capital plan. According to the "MBTA Vision for 2024" proposal, the line would operate diesel multiple units for its rolling stock and would be fully operational in that year.
context_section_description: The MBTA Vision for 2024 map shows six possible lines for Indigo DMU service:
  The current Fairmount Line
  South Station to Riverside via the Framingham/Worcester Line and an old right of way from that line to Riverside currently used for trolley operator training
  Back Bay to the Boston Convention and Exhibition Center using Track 61
  North Station to the planned West Station using the Grand Junction Railroad, with a new stop in Cambridge
  North Station to Anderson RTC on the Lowell Line
  North Station to Lynn on the Newburyport/Rockport Line
  The Sonoma–Marin Area Rail Transit purchase of Nippon Sharyo DMU trains in 2010 included an option for 18 cars to be provided to the MBTA for the Indigo Line service.
  The Indigo Line has since been indefinitely postponed.
caption: The Nippon Sharyo DMU is proposed for Indigo service
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