The San Diego Trolley (reporting mark SDTI) is a light rail system operating in the metropolitan area of San Diego. It is known colloquially as "The Trolley". The Trolley's operator, San Diego Trolley, Inc. (SDTI), is a subsidiary of the San Diego Metropolitan Transit System (MTS). Trolley service operates on three daily lines: the Blue, Green, and Orange Lines, and travels through 53 stations and 53.5 total miles of double-track rail. I think The San Diego Trolley will be a great Addition to The Current Pacific Surfliner Route.