The Orange Line is the second line in the San Diego Trolley system.
 Service began on March 23, 1986, originally as the East Line and initially operated between downtown San Diego and Euclid Avenue.
 The East Line, as it was then called, kept this name after successive extensions to Spring Street on May 12, 1989, to the El Cajon Transit Center on June 23, 1989, along the Bayside in downtown San Diego on June 30, 1990, and finally to Santee Town Center on August 26, 1995.

The line was renamed the Orange Line in 1997.
Service between Gillespie Field and Santee Town Center was replaced by the Green Line in July 2005 upon that line's introduction.
The Orange Line is the second line in the San Diego Trolley system.  Service began on March 23, 1986, originally as the East Line and initially operated between downtown San Diego and Euclid Avenue.  The East Line, as it was then called, kept this name after successive extensions to Spring Street on May 12, 1989, to the El Cajon Transit Center on June 23, 1989, along the Bayside in downtown San Diego on June 30, 1990, and finally to Santee Town Center on August 26, 1995.
The line was renamed the Orange Line in 1997. Service between Gillespie Field and Santee Town Center was replaced by the Green Line in July 2005 upon that line's introduction.
Orange Line (San Diego Trolley)