The San Diego Metropolitan Transit System (MTS) is the public transit service provider for Central, South, Northeast and Southeast San Diego County, in the United States. MTS operating subsidiaries include the San Diego Trolley, Incorporated (SDTI), and San Diego Transit Corporation (SDTC). Average daily ridership among all public transit services provided is 280,100.
MTS owns the San Diego and Arizona Eastern Railway (SD&AE); and the San Diego Vintage Trolley, Incorporated.
MTS also licenses and regulates taxicabs, jitneys, and other private for-hire passenger transportation services provided contract for the cities of San Diego, El Cajon, Imperial Beach, La Mesa, Lemon Grove, Poway and Santee.