You are citing a common accounting sleight of hand where you look at federal gas excise revenue and compare it to only federal spending on highways. Some issues:
* This includes an important subsidy from urban road users - who are federal funding ineligible - to highway users.
* Federal funding is only 25% of highway spending, the rest being state and local funds.
* Most road expansion capital projects deliver worse increased passenger throughput per dollar than highway projects.
Regarding costs, a good rule of thumb is the best performing road networks pay for half their expenses with user fees (Texan highways). Some poorly performing ones like Maryland are at 20% (http://www.actfortransit.org/archives/testimonies/2009Apr29T...). Owen D. Gutfreund’s
Twentieth-Century Sprawl is a good reference.
The final logical mistake in this line of analysis is looking at per rider subsidies between roads and transit, since American transit systems are uniquely inefficient precisely because of the burdens on transport laden by the road system. You can’t build densely because everyone thinks their cars won’t fit in the new urban geometry, but density is a precursor to successful transit. So we are stuck in an equilibrium where we prop up despots around the world for gasoline while everyone hates their commute.
* This includes an important subsidy from urban road users - who are federal funding ineligible - to highway users. * Federal funding is only 25% of highway spending, the rest being state and local funds. * Most road expansion capital projects deliver worse increased passenger throughput per dollar than highway projects.
Regarding costs, a good rule of thumb is the best performing road networks pay for half their expenses with user fees (Texan highways). Some poorly performing ones like Maryland are at 20% (http://www.actfortransit.org/archives/testimonies/2009Apr29T...). Owen D. Gutfreund’s Twentieth-Century Sprawl is a good reference.
The final logical mistake in this line of analysis is looking at per rider subsidies between roads and transit, since American transit systems are uniquely inefficient precisely because of the burdens on transport laden by the road system. You can’t build densely because everyone thinks their cars won’t fit in the new urban geometry, but density is a precursor to successful transit. So we are stuck in an equilibrium where we prop up despots around the world for gasoline while everyone hates their commute.