Wyoming has agreed to increase its tax on diesel and gasoline by 10 cents, to 24 cents a gallon as of July 1, a change that was supported by the state’s trucking industry.

Faced with the expiration in September of federal transportation taxes on gasoline and diesel fuel, highway advocates say they are increasingly worried that the anti-tax, anti-government rancor that characterized the debt ceiling battle could endanger the nation’s transportation system.