100% is an exaggeration, but it's not far off. Our roads aren't just failing from a lack of maintenance, they're failing in one generation, they're failing to be paid for from usage taxes before they need full replacement.
There are no states in the US where gas taxes cover more than 60% of the cost of roads.
This is another form of racism/classism. White people have no problem paying for white people transport (cars!). They object to "city" transport which often carries poor and other-colored people.
As I understand it, cars can be fairly expensive. Maybe some kind of tax on the sale of each one could bring in a few bucks.
I'm in NYS and have been for 20+ years, and what I've seen in the last time or two I renewed the license on my car was that I paid a surtax to support the commuter trains, the MTA. So, it looks like the car owners are supporting the trains whether they use the trains or not. Only once did I ever get on one of those trains. And I'm proud to say that I've never been on a NYC subway.
E.g., I live on a nice street in the suburbs. There is maintenance on the streets and snow plowing in the winters. My impression is that my local town is paying for that out of real estate taxes -- if so, then that's fair since everyone in the suburbs needs the streets, even if they shop at Amazon and get deliveries via FedEx or some such.
But passenger trains? People in the suburbs don't need passenger trains so much, and even if they do they still need the local streets to go between the trains and the doors. So, again, using real estate taxes to pay for the local streets is fair enough.
I don't have good data on what the costs are for Federal highways, bridges, trains, capex, opex, and how those costs are being covered, but my impression is that the gas taxes and tolls pay for what the cars and trucks use and that in the US it's just hopeless for the train tickets to pay for what the trains cost -- but again that's just my impression.
Since I'm not in either the car or train business, I haven't gotten the data.
But if you are for trains and want to convince people, then having the data on costs and how they are being covered would help, really, is crucial.
Uh, writing this, it occurs to me that to be fair the Federal gas taxes should need to cover only the Federally supported highways and bridges, e.g., the Interstate highways. In that case, sure, local real estate taxes and not Federal gas taxes may be the main source of funding for local streets.