If some newly constructed homes are next to a 100km/h highway, will reducing the speed limit reduce noise?


yes! provided lower limit enforced :-)

largest component @ speed tyre noise, slower equals quieter. , road surfaces vary in amount of noise generated.

however, on db(a) scale used legislative tests. 6 years ago crazy dutch (yeah, smoking something) had poor sense point out low frequency noise below cut-off generated firing cycle of internal combustion engines , travels through road-side barriers , buildings otherwise attenuate higher frequencies. nobody wanted boat rocked, ignored! it's not low (mythical?) "brown noise" low enough thought detriment human health, although perhaps when you're high :-p

distance remains best option - volume drops square of distance. although i've visited friends living 1km m25, , drone of traffic rather spoilt folk drumming session having in garden. hosts claimed ignorant of noise having lived there long enough. no drugs being smoked!



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