72-Hour Strike Notification has been given meaning unless an agreement is reached there is a stronger potential for a walk out now.
I noticed on the AC Transit BART service alternative sheets it did list the Capitol Corridor and Caltrain as alternatives both within the East Bay and taking the train to Emeryville and the Amtrak Bus to San Francisco or AC Transit bus to Palo Alto or Hillsdale (San Mateo) and Caltrain to San Francisco depending on your origin within the East Bay. There is no way any one providor can handle the load so they are trying to balance it between everyone.
It is estimated that other transit providors can only pick up (at most) 1/4 of the BART passenger load if BART goes on strike. The rest will hopefully find alternatives to going to work (vacation, telecommuting, etc...) with the remainder hitting the roadways in private vehicles (either solo or casual carpools).
It will hit hardest on those with no private vehicle or alternative to going in physically to work, summer school, activities, etc...
Bottom line is it will affect everyone from BART riders to those whose travels have nothing to do with BART. Hopefully an agreement can be reached by Monday to avert this situation, however time to start looking at alternatives especially come Sunday night if no progress has been made.