"Then-Secretary of Transportation Mary Peters stated on August 15, 2007 that about 60% of federal gas taxes are used for highway and bridge construction. The re

"Then-Secretary of Transportation Mary Peters stated on August 15, 2007 that about 60% of federal gas taxes are used for highway and bridge construction. The remaining 40% goes to earmarked programs." https://en.wikipedia.org/wiki/Fuel_taxes_in_the_United_States https://en.wikipedia.org/wiki/Fuel_taxes_in_the_United_State... Not so sure about state taxes (gas or registration) but I believe its similar depending on where you live, paying more for local roads. Not saying its not fair but it makes some sense... people who buy gas or register pay the most (electric vehicles skirt this), people who don't drive pay some too through normal taxes as they utilize them for public transit, bikes, products they buy, or the food they eat.