The US interstates move military equipment across the country without needing to deal with railroad bottlenecks. It is a public good. Just like GPS, it has ancillary civic functions but it still serves its original purpose.

> Can I use the highway if I don’t have a car?

Can I use the schools if I don't have a child?

Apparently under your definition of a public good, there's no such thing.

>A highway is not a public good. It is a publicly subsidized good for private consumption.

So is every park. What's the point of this language game?

Necessary public infrastructure that is paid for with tax dollars is not a public good?

And just in case this fact is being lost / forgotten: Toll roads are primarily, originally funded through tax dollars but are disingenuously structured in a way these bozos can go "see, it's not actually tax dollars" (it is). The same exact dollars that should be used to build fully public, free roads are instead used to privatize public infrastructure.

There has never been a time where a toll raid has failed and the losses were treated as private. The bonds magically get repaid (to the right people, of course).

It's all tax dollars in the end, one way or another.

I don't understand, there are plenty of other things the public pays for that you can't use for other, unintended purposes. You can't fly your hobby drone out of a public airport just because you want.