The San Diego Trolley is the oldest "second generation" light rail system in the United States, having opened on July 26, 1981. Since then, the system has grown to include 3 regular service lines, 1 heritage streetcar line, 53 stations, and 53 miles of track. In early 2015, the fleet became entirely low-floor. Currently, there are about 120 vehicles, all manufactured by Siemens, in the trolley fleet, in addition to 2 restored PCC streetcars that are used for the "Silver Line" heritage service.
Siemens SD100 2037 at 12th & Imperial Transit Center, July 17, 2014
Siemens SD100 2043 at America Plaza, July 17, 2014
Siemens SD100 2047 at 12th & Imperial Transit Center, July 17, 2014
Siemens SD100 2049 entering City College, July 17, 2014
Siemens–Duewag U2 1003 on Park Boulevard at G Street, July 17, 2014
San Diego Trolley Siemens–Duewag U2 1003 at the Southern California Railway Museum, January 19, 2020
Siemens–Duewag U2 1006 entering City College, July 17, 2014
Siemens–Duewag U2 1008 on Park Boulevard at G Street, July 17, 2014
Siemens–Duewag U2 1012 at City College, July 17, 2014
Siemens–Duewag U2 1012 at City College, July 17, 2014
Siemens–Duewag U2 1012 (left) with Siemens SD100 2015 at 12th & Imperial Transit Center, July 17, 2014
Siemens–Duewag U2 1017 on Park Boulevard at Market Street, July 17, 2014
Siemens–Duewag U2 1033 at Park & Market Station, July 17, 2014
Siemens–Duewag U2 1033 on Park Boulevard at Market Street, July 17, 2014
Siemens–Duewag U2 1033 entering Park & Market Station, July 17, 2014