Am Fr., 3. Mai 2019 um 10:44 Uhr schrieb Peter Elderson <pelder...@gmail.com >:
> I would not map a noise level value for any surface. a. It's not the > surface that produces the noise; b. it's a relative value, but compared to > what? You would need/assume a standard regular noise value for comparison; > c. the standard will change over time, making all mapped values wrong. > it really depends how you understand the meaning of the tag. If you would map a "noise level" you would need normalized conditions to measure, but if you just want to say "creates more / less noise than a normal asphalt road around here" it could be possible. Yes, it might change what is considered "normal". FWIW, when I rode on such asphalt I did notice a difference. And so far they also tend to put signs there to make you aware of the "novelty" (would obviously also change if it becomes the norm). Cheers, Martin
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