One Rail System to Ring the Bay Area? Supporters See Reasons for Optimism A plan to integrate the various regional transit providers in the San Francisco Bay Area could be the key to winning back transit riders in the post-pandemic world. April 15, 2021, 12pm PDT | James Brasuell | Momentum is building for an idea that would merge Bay Area Rapid Transit (BART) with CalTrain and other regional rail providers to create a single regional rail system that would completely encircle the San Francisco Bay Area, reports Nico Savidge. Seamless Bay Area released a report earlier this month that "recommends bringing BART, Caltrain and other longer-distance operators such as San Francisco Bay Ferry and the North Bay's Golden Gate Transit together into a single system that stretches from Santa Rosa to Gilroy," according to Savidge.