A man changes the price for a gallon of gasoline at a gas station in Medford, Massachusetts December 4, 2014. U.S. states where gasoline taxes have not risen in decades are now discussing an increase and conditions might be ripe for the proposed hikes to win approval in state legislatures, tax experts said this week. Low gas prices, a desperate need for revenue to fix crumbling roads, and a post-election period that gives politicians the space to tackle controversial issues have breathed life into efforts to raise the taxes, said Carl Davis, research director at the non-partisan Washington D.C.-based Institute on Taxation and Economic Policy. In all, 21 state legislatures will consider bills aimed at increasing gas taxes this year, Davis said. “Some states that have gone 10 or 20 or almost 30 years without a gas tax rate increase, and they’ve seen the purchasing power of their taxes […]