>>966207The Bay Area is the opposite of LA: since there's a bay, the entire area was split up into different counties. Most of the LA area is inside LA County. As such, LA Co was able to quickly expand their light rail/metro rail systems since it was all under one jurisdiction. Meanwhile, the Bay Area proved unable to expand any of their rail systems beyond Joint Powers Boards that operate commuter rail.
It should be noted that BART was designed to be the *one* Bay Area Rapid Transit system. However, the planners of the system expected urban growth to continue eastward, with most trips being into SF. Instead, Silicon Valley happened and all the growth happened in the south which BART does not serve.
During the past 20 years, in place of BART arose both Caltrain, the Capitol Corridor and ACE which operate SJ-bound trips. BART is not expected to have a direct connection to San Jose's main station until 2025.
