The National Commission on Surface Transportation Infrastructure Financing is the second group in a year to call for increasing the current 18.4 cents a gallon federal tax on gasoline and the 24.4 cents a gallon tax on diesel. State fuel taxes vary from state to state.
In a report expected in late January, members of the infrastructure financing commission say they will urge Congress to raise the gas tax by 10 cents a gallon and the diesel tax by 12 to 15 cents a gallon. At the same time, the commission will recommend tying the fuel tax rates to inflation.
The commission also will recommend that states raise their fuel taxes and make greater use of toll roads and fees for rush-hour driving.
Although the cost of gasoline has dropped dramatically in recent months, such tax increases could be politically treacherous for Democratic leaders in Congress. A gas tax increase was one of the reasons they lost control of the House and Senate in the 1994 elections. President-elect Barack Obama has expressed concern about raising fuel taxes in the current economic climate.
But commission members said the government must find more road and bridge building money somewhere.
"I'm not excited about a gas tax increase, but the reality is our current gas tax doesn't pay for upkeep of the system we have now," said Adrian Moore, vice president of the Reason Foundation, a libertarian think tank in Los Angeles, and a member of the highway revenue commission.
Many Americans are driving less and switching to more fuel-efficient cars and trucks, and a shift to new fuels and technologies like plug-in hybrid electric cars will further erode gasoline sales.
According to a draft of the financing commission's recommendations, the nation must move to a new system that taxes motorists according to how much they use roads.
While details have not been worked out, such a system would mean equipping every car and truck with a device that uses global positioning satellites and transponders to record how many miles the vehicle has been driven, and perhaps the type of roads and time of day.