As more electric and fuel-efficient vehicles hit the road, transportation officials are trying to figure out how they will pay for transportation network investments and maintenance needs.

In Georgia, a state committee is discussing a tax based on miles driven.

The new model would charge motorists for every mile they travel. The more you drive, the more you would pay.

“You have to finance the building of roads and that’s done through a gas tax and if you have electric cars you can’t raise the tax, or collect the tax,” Emory Professor of Economics Raymond Hill explained.

Hill is a professor at Emory University’s Goizueta Business School. He said changing fuel economy standards have impacted state revenue generated from the gas tax.

“People are traveling the same amount of miles but buying less gas so the gas tax has gone down there,” he stated.

Hill said the shift toward more electric vehicles on Georgia roads will likely have more of an effect in the long run.

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