Editing Blue Line (section)

=== North America ===

====New York City====
* The [[Harlem Line]] of the Metro-North Railroad
* The [[Hoboken–33rd Street]] route of the PATH Train
* Any of the New York City Subway services that use the [[IND Eighth Avenue Line]] and its branches:
** [[A (New York City Subway service)|A Eighth Avenue Express]]
** [[C (New York City Subway service)|C Eighth Avenue Local]]
** [[E (New York City Subway service)|E Eighth Avenue Local]]
** The former [[K Eighth Avenue Local]]
** The [[Rockaway Park Shuttle]], which formerly contained a blue route bullet
* The [[Port Jefferson Branch]] of the Long Island Rail Road
* The former [[JFK Express]] of the New York City Subway
* The future [[T (New York City Subway service)|T Second Avenue Local]] of the New York City Subway
* The [[West Hempstead Branch]] of the Long Island Rail Road
* The [[Staten Island Railway]]

====Other====
* [[Rapid Ride|ARTx Blue Line]], formerly Rapid Ride, Albuquerque, New Mexico
* [[Blue Line (MARTA)]], Atlanta, Georgia
* [[Blue Line (CapMetro)]], Austin, Texas
* [[Blue Line (MBTA)]], Boston, Massachusetts
* [[Blue Line (Calgary)]], Calgary, Alberta, Canada
* [[Lynx Blue Line]], Charlotte, North Carolina
* [[Blue Line (CTA)]], Chicago, Illinois
* [[Blue Line (RTA Rapid Transit)]] (light rail), Cleveland, Ohio
* [[Blue Line (DART)]], Dallas, Texas
* [[Trinity Railway Express]], Dallas, Texas
* [[H Line (RTD)]], Denver, Colorado
* [[A Line (Los Angeles Metro)]], Los Angeles County, California
* [[Blue Line (Mexico City Metro)]], Mexico
* [[Blue Line (Mexico City Metrobús)]], Mexico
* [[Metro Blue Line (Minnesota)]], Minneapolis, Minnesota
* [[Blue Line (Montreal Metro)]], Montreal, Quebec
* [[Atlantic City Line]], a commuter rail line New Jersey
* [[Newark Light Rail#Newark City Subway 2|Grove Street – Newark Penn]], a light rail line in Newark, New Jersey
* [[North Jersey Coast Line]], a commuter rail line New Jersey
* [[Blue Line (Pittsburgh)]], Pittsburgh, Pennsylvania
* [[Market–Frankford Line]], Philadelphia, Pennsylvania
* [[Blue Line (SacRT)]], Sacramento, California
* [[Blue Line (San Diego Trolley)]], San Diego, California
* [[Blue Line (BART)]], San Francisco Bay Area, California
* [[N Judah]], a Muni Metro light rail line in San Francisco, California
* [[Line 3 Scarborough]], Toronto, Canada
* [[Viva Blue]], York Region, Ontario
* [[MAX Blue Line]], Portland, Oregon
* [[Blue Line (St. Louis MetroLink)]], St. Louis, Missouri
* [[Blue Line (Sound Transit)]], a proposed extension in Seattle, Washington
* [[Swift Blue Line]], Snohomish County, Washington
* [[Blue Line (TRAX)]], a light rail line in the Salt Lake City, Utah area
* [[Blue Line (Washington Metro)]], Washington, DC
* [[Tomorrowland Transit Authority PeopleMover]], Walt Disney World, Florida
* [[Line 4 (O-Train)]], the Airport Link of Ottawa's O-Train (Line 4)