The federal gas tax is a critical source of funding for the nation’s transportation system, but its design is fundamentally flawed. In recent years, the consequences of those flaws have become increasingly obvious, as the federal government has struggled to fund a 21st century transportation network with a gas tax that has predictably failed to keep pace with the nation’s growing infrastructure needs. This ITEP Policy Brief explains how the federal gas tax works, its importance as a transportation revenue source, the problems confronting the gas tax, and the reforms that are needed to overcome these problems.
