San Diego Metropolitan Transit System

The San Diego Metropolitan Transit System (SDMTS or often simply MTS) is a public transit service provider for Central, South, Northeast, and Southeast San Diego County. The agency directly operates a large transit system that includes the MTS Bus, San Diego Trolley light rail, and Rapid bus rapid transit services. The MTS also controls the San Diego and Arizona Eastern (SD&AE) freight railway and regulates taxicabs, jitneys, and other private for-hire passenger transportation services.