If oil prices are any measure, Iran just flinched.

U.S. gas prices are continuing to rise — giving drivers across the country another headache at the pump.

Drivers are in for another headache at the pump as U.S. gas prices continue to rise.

After 99 consecutive days of declining gasoline prices, the cost for a gallon has edged a penny higher.

Gas prices hit record highs just two months ago, but now they're sinking below $4 a gallon.

U.S. gas prices have dipped under $4 a gallon for the first time in more than five months.

iStock / RapidEyeThe growth of fuel-efficient and electric cars means Americans are paying fewer gas taxes. A total of 13 states raised gas taxes Monday, at the start of their fiscal years. Second is Ohio, where taxes jumped to 38.6 cents a gallon up 10.5 cents from the previous gas tax. In California, where average gas prices were already at the highest level nationwide, the state gas taxes rose 5.6 cents a gallon, about a 10% increase. That means the state now has the highest state gas taxes, passing Pennsylvania, which left its gas taxes unchanged.