Transit is NOT about reducing congestion. Induced demand (https://en.wikipedia.org/wiki/Induced_demand) clearly means that some people will driving so long the congestion is within their tolerance level.
Public Transit is all about giving choices to people AND enabling people to get to jobs that they couldn't get to otherwise because of congestion.
For my family, I have been fortunate enough that the last 15 years or so I have been able to take public transit to my jobs. This has enable my family to use a single car and save tens of thousands. This is significant money for me and even more significant for someone making less than I do.
Public transit enables workers to keep more of what they earn because they don't have to spend money on gas, car repairs, and they don't have surprise expenses related to driving all the time.
Public transit is NEVER about congestion.
If the goal is "solving" congestion then:
* ban cars (Market Street in SF, 14th Street in NYC (https://ny.curbed.com/2019/10/18/20919729/new-york-transport...)
* have an economic collapse
* reduce parking options
* congestion pricing
... etc...