Noel Popwell

By now the problems with the gas tax are well reported. Revenues from the tax have been declining for years because of improved fuel economy and alternative-fuel vehicles. The result is a growing gap between the money needed to maintain and improve our transportation system and the money available in the Highway Trust Fund.

Oregon, true to its history as the first state to implement a gas tax, was also the first state to consider getting rid of it -- in exchange for adopting a mileage-based system for highway funding. And the Beaver state isn’t alone: A number of other states have done studies and introduced legislation to charge drivers for the distance they travel instead of the gasoline they consume.