Institute on Taxation and Economic Policy (ITEP)

Yes, vehicles have become more fuel efficient, but a just-released report by the Institute on Taxation and Economic Policy shows that inflation is 3.5 times more responsible for the decline in the purchasing power of the gas tax.
Jun 25, 2015   Institute on Taxation and Economic Policy
After voting to override Governor Jay Nixon's veto of an income tax cut, legislators agreed to allow voters to determine whether to increase the state sales tax by .75% in November for ten years to increase funding for transportation programs.
May 18, 2014   Columbia Daily Tribune
The Institute on Taxation and Economic Policy has released a '50-state report' on state gas excise taxes - when they were last raised, the revenue loss to each state due to failure to maintain the tax, and what it would cost drivers to raise it.
Dec 15, 2011   PRNewswire-USNewswire via CBS Atlanta