As 33 million of us hit the road for Labor Day weekend (AAA estimate), consider that although gasoline prices have tripled since 1993, the federal gas tax hasn't budged one cent. It's remained a flat 18.4 cents per gallon for nearly 20 years. The revenue goes to maintain highways and bridges in sore need of repair, but inflation has whittled its value down by 35 percent.
State taxes also figure in pump prices: to see what the average American driver pays each year, see today's infographic. Then join the discussion thread below. Is road repair everyone's problem, or just motorists?
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CORRECTS: Gas taxes in Arizona (37.4 cents) and New Mexico (37.3 cents) -- 8.31.12
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