How much does terrain and distance influence the noise from traffic?

Noise is normally reduced with increasing distance. But the actual noise reduction depends on the acoustical properties of the terrain.

Acoustically soft terrain like field soil reduces noise more efficiently than acoustically hard ground does, e.g. asphalt etc.

These examples show the effect of hard and soft terrain at different distances from the road. The traffic situation corresponds to the evening situation.


Please connect your headset to your computer. Make sure that the left and right channels are set correctly.

Start by pressing the black boxes. During playback you can jump between options.

You should not adjust the volume as this will change the adjustment you have already made in order to calibrate your system.

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The auralisations are developed in cooperation with the Danish Road Directorate.