The regressiveness issue of tolls is effectively a nitpick compared to the broader more comprehensive issue of how to we create an affordable transportation system for the working class and how do we raise the revenue to fund that through taxes.
The dominant automobile oriented transportation system is very unaffordable and requires high costs of entry. The best thing we can do to make transportation more affordable in general is giving people more options aside from the car. Taxing the wealthy in order to raise revenue for public transportation and active transportation options dominates any sort of regressiveness issues around road tolls and less traffic makes buses more effective.
> The dominant automobile oriented transportation system is very unaffordable and requires high costs of entry.
Wait until you hear about the true costs of transit. A transit ride in a large city is typically MORE expensive than a car ride. Even when you take into account the cost of depreciation, insurance, financing and other related expenses.
The transit ticket price in the US is typically covers just around 15-20% of the _operational_ _cost_ ("farebox recovery rate"). And the capital costs for transit are off the charts. Seattle is going to pay $180B (yes, that's "B" for "billion") for about 20 miles of new lines. And for one mile of subways in Manhattan, you can build 1500 miles of 6-lane freeway.
It's THE real reason we have a failing democracy. Thoughtless social experiments with subsidizing transit have led to distorted housing and job markets. You can't just subsidize one facet of life and hope for it to work.