(10)Traffic noise is a significant nuisance and has a harmful effect on health. Regulation (EC) No 661/2009 lays down minimum requirements for the external rolling noise of tyres. Technological developments make it possible to reduce external rolling noise significantly beyond those minimum requirements. To reduce traffic noise, it is therefore appropriate to update the provisions on the labelling of tyres to encourage end-users to purchase tyres with lower external rolling noise by providing them with harmonised information on the external rolling noise parameter.