ITIF：2025年用于增强美国道路可持续性的卡车里程税报告（英文版）

The Highway Revenue Act of 1956 created the U.S. Highway Trust Fund (HTF) to fund the U.S. Interstate Highway System. It was designed to assure that adequate funds were available to maintain and expand the U.S. roadways to ensure their sustainability. The HTF is funded primarily through fuel taxes at a flat rate per gallon, which slowly rose from its inception to 18.4 cents per gallon for ethanol and 24.4 cents per gallon of diesel in 1993, but has not risen since due to its unpopularity and sub