My understanding is that the train system and automotive sector are kind of opposite.
For automotive, the government does the roads and private industry does the vehicles.
Conversely, the rails are largely private industry excluding Amtrak, and Amtrak is mostly responsible for the trains with their government granted monopoly on passenger rail.
It's part of what really limits passenger rail, the companies that own the rail mostly want to rail from places like ports, and negligible value for rail between population centers. Also Amtrak has to suck it up if a rail is busy (wasnt supposed to be the case, but cargo operators were allowed to make trains too long to fit on bypass spurs so they can't get out of the way like they were legally required to).
Not only are the proportions really misguided, but the thing is even the road funding is too low. Weāre way behind in infrastructure, and yes we still need to be able to get around with personal vehicles
Not only that but suburban areas are actually built using loans that can't be paid back bc suburban areas produce so little taxes they aren't self sustaining
Amtrak relies on other companies to run their trains, how much do they spend on infrastructure? Probably not as much as for roads, but the comparison isn't great.
The US can use federal highways to rapidly move soldiers.
[The National Highway System] NHS consists of five parts...
...The fourth component is major Strategic Highway Corridor Network connectors. They consist of more than 3,000 km of roads linking major military installations and other defense-related facilities to the STRAHNET corridors.