The noise levels on this section of the M20 have been assessed as part of DEFRA’s Noise Action Plan. This identified 10 areas between M20 Junction 8-9 which required investigation because of the level of noise. Action has been taken to mitigate noise at five out of the 10 areas with the installation of noise insulation. Highways England are working to address the remaining five areas, including trials to test options to reduce the noise generated by concrete road surfaces.