(4)The transport sector accounts for a third of the Union’s energy consumption. Road transport was responsible for about 22 % of the Union’s total greenhouse gas emissions in 2015. Tyres, mainly because of their rolling resistance, account for 20 to 30 % of the fuel consumption of vehicles. A reduction in the rolling resistance of tyres would therefore contribute significantly to the fuel efficiency of road transport and thus to the reduction of greenhouse gas emissions and to the decarbonisation of the transport sector.