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.

As if the drama surrounding the reauthorization weren’t enough, there is another transportation battle brewing between the House and Senate. Last month, the House voted to eliminate funding for the American Community Survey, which is the Census Bureau’s way of getting a yearly pulse-check of how the country is doing and where investment is needed. The Senate’s version of the Commerce, Justice and Science appropriations bill [PDF], approved at the committee level, does not include this ill-advised amendment to defund the survey.

The shortcomings of the current gas tax are well-known. The federal rate (18.4 cents/gallon) has not been raised in nearly twenty years and is not tied to inflation, yet it remains the primary source of funds for federal transportation spending. The problem is exacerbated by improving vehicle fuel economy. And as electric cars roll off the assembly line in greater numbers and become the vehicle of choice for more drivers, relying on the gas tax as the primary source of transportation funding makes even less sense.

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.