A: Yes, but only if it is imperative, as you may run the risk of contracting or exposing others to COVID-19. Several forms of public transportation, including Caltrain, BART, and SamTrans, are still open, but companies are reducing their services.
Scot Scoop News • April 30, 2020 • https://scotscoop.com/q-can-i-still-travel-locally/