From Longman Dictionary of Contemporary Englishroad taxˈroad tax noun [uncountable] TTRSCLa tax in Britain that the owner of a vehicle must pay in order to drive it legally → tax disc
Examples from the Corpus
road tax• Petrol will increase by around 11p a gallon with annual road tax rising from £110 to £130.• He treats it as road tax.• Unexpected repair bills, road tax and insurance also have to be paid.• Last month they promised to deal with Gordon Brown's November pledge to reduce road tax.• And he supports the long-floated idea that road tax should be scrapped, with the equivalent revenue drawn from petrol duty.• For example, a substantial proportion of the road tax levied on vehicle owners goes towards paying for road maintenance and improvements.From Longman Business Dictionaryroad taxˈroad tax [uncountable]TAX in Britain, a tax that every car owner must pay → tax 