Road fund licence was originally a tax on motor vehicles to maintain the road system. Although a very small amount went on the roads, most went to run a Navy we didnât need, but thats another issue. Now, with global warming it is a green tax on the amount of carbon emissions you vehicle puts into the atmosphere. Therefore the more carbon you emit the more tax you pay? Well, can anyone tell me why my 6000 miles per year I get taxed Â£205 and I taxi driver with his 100,000 a year plus gets taxed the same? Surely if it is a green tax then it should be on the price of the fuel that ultimately turns into carbon, then your are paying for the amount of carbon your emit. I say abolish the road tax and put the green tax at 1 pence per liter (2.5 pence per gallon) on fuel and then everyone will pay as they destroy, the more you destroy, the more you pay. Keep the tax disc but change it to MOT disc with same ruling, show insurance certificate before it is issuedalong with the vehcle achieving the laid down mechanical standard of course.