"Despite receiving more than one-fourth of the funding, mass transit still represents less than 2 percent of trips taken nationwide. Even when one looks only at commuting, where trains and buses do best, mass transit’s national mode share is less than 5 percent — down from more than 6 percent in 1980."
https://fee.org/articles/the-50-year-disaster-of-government-trains-buses-and-streetcars/
https://fee.org/articles/the-50-year-disaster-of-government-trains-buses-and-streetcars/