Which is a bit shocking in its own way, even if the numbers were break-even instead of 20-50%.
Public transit is widely touted as being more efficient than the alternatives, but for most trips it's cheaper (factoring in maintenance, depreciation, gas, etc, and pretending that BART is as convenient and reliable) to drive than to take BART, and not by a little bit.
Income just from gas taxes, tolls, and registration cover ~half the infrastructure maintenance, so there exists effectively another $200-$300 per capita per annum subsidy, but that's nowhere near enough to make BART cost less than just driving, even if I had to account those extra fees against my driving.
Why is that? How is BART worse than driving and still losing money when it's supposedly a more efficient solution? Is it just low volume? Is the organization making bad bets? Is the premise that trains are more efficient flawed?