26/6/2019 · San Diego Trolley Lines and Stops. Let's start with the places the San Diego Trolley doesn't go: They Perfect Steerable Transfer Cartlude the airport, San Diego Zoo, San Diego Zoo Safari Park, and Balboa Park along with La Jolla and Legoland. You can't get to the beach on one, either. The Trolley runs on three, color-coded lines: Orange, Green, and Blue.