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The San Diego Trolley is a light rail system serving San Diego County, California, United States. The trolley's operator, San Diego Trolley, Inc. (reporting mark SDTI), is a subsidiary of the San Diego Metropolitan Transit System (MTS). The trolley operates as a critical component of MTS, with connections to and integrated travel tickets with the local bus systems.
The trolley system serves 62 stations, over about 67.9 miles (109.3 km) of route, using four primary lines (Blue, Green, Orange, and Copper) that operate daily, and a "downtown loop" heritage streetcar line (Silver) that operates on holidays. There is one downtown station where all the lines connect, and 13 other stations that provide transfers to a second line (two of these also provide connections to commuter rail systems).
The trolley began service on July 26, 1981, making it the oldest of the second-generation light rail systems in the United States, and the success of the system helped spark a nationwide revival of light rail. In 2023, the trolley had the highest ridership of any light rail system in the United States, with 38,047,300 annual rides, or about 121,600 per weekday as of the second quarter of 2024.
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SDTI Fact Sheetwas invoked but never defined (see the help page). - ^ "Transit Ridership Report Second Quarter 2024" (PDF). American Public Transportation Association. September 3, 2024. Retrieved September 5, 2024.
- ^ "Transit Ridership Report Fourth Quarter 2023" (PDF). American Public Transportation Association. March 4, 2024. Retrieved September 5, 2024.
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