Fuel tax revenues are declining as vehicles get more efficient, and more of them run on electricity. Project costs are rising faster than revenues can keep up. Regions are being asked to fund technology upgrades, climate resilience, and emergency response on top of traditional capital and operations needs. And every competitive dollar is harder to win than it used to be.

Many agencies have responded by passing countywide or regional transportation sales tax measures, and those measures have become central to what local delivery actually looks like. We’ll examine the full range of emerging funding tools, from mileage-based fees to vehicle registration fees to tolling, and what each one is built to address and the implementation barriers they face. These tools are not interchangeable. The right approach depends on the specific funding gap a region is trying to close, and on what’s viable given policy, equity, and public acceptance realities.

The goal isn’t to sketch a tidy solution. It’s to give your team a clear-eyed picture of the constraints so you can make smarter choices inside them.