Policymakers have been considering vehicle and fuel taxes to reduce transportation greenhouse gas emissions, but there is little evidence on the relative efficacy of these approaches. We examine an annual vehicle registration tax, the Vehicle Excise Duty (VED), which is based on carbon emissions...

Slowing down global warming is one of the most critical problems facing the world's policymakers today. One favored solution is to regulate carbon consumption through taxation, including the taxation of gasoline. Yet gasoline tax levels are much lower in the United States than elsewhere. Why is...