What is BART fare?
Bay Area Rapid Transit?
BART fare is the fare or cost to ride the BART train, Bay Area Rapid Transit. I think this person was hinting that they put homeless on the trains to Berkeley.
“”What is BART fare?””
That was your post and your question...People misunderstood what you were asking. It sounded as if you were asking what the “fare” was to ride BART. I took it that way and it appears others did also. If you’d said, “What is BART?”, one answer would have been sufficient instead you got a rogues gallery of answers.