On the other hand, the fact that the Bay Area has a bunch of chronically congested freeways due to everyone driving to work is a clear symptom that we need better transportation such as rail transport or buses. For example CA 85 is clearly congested in the direction of driving towards Apple in the morning and away from Apple in the evening.
Sure but if housing density also increases then you'll just keep the existing equilibrium. NYC has the best public transit in the US with less than half the households even owning a car. Yes car traffic is famously bad.
