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It is surprisingly difficult to find an English source for this. [1] shows on page 3 a significantly higher tire noise for 50 kph (+8 dbA) but doesn't show low
by foepys 10y ago
It is surprisingly difficult to find an English source for this.
[1] shows on page 3 a significantly higher tire noise for 50 kph (+8 dbA) but doesn't show lower speeds than 50 kph.
[2] is in German and from the Austrian Federal Environment Agency and states that for cars build after 1996 25 kph is the point where the tire noise takes over at a steady speed and at 50 kph when the car is accelerating.
1: http://www.asphaltroads.org/assets/_control/content/files/anintroductiontotire-pavementnoiseofasphaltpavement.pdf http://www.asphaltroads.org/assets/_control/content/files/an...
2: http://www.umweltbundesamt.at/umweltsituation/laerm/laermschutz/massn_strasse/reifenlaerm/ http://www.umweltbundesamt.at/umweltsituation/laerm/laermsch...
- dolguldur 10y agoThanks! The various components of tire noise are interesting. One other thing that came to my mind is that tire noise is usually concetrated in the high frequencies, whereas some cars, especially trucks, emit very low-frequency noises. The latter penetrate walls and windows much more easily. Of course tire noise won't go away with electric cars, but in my opion there's a vast underestimation of how much quieter roads and cities could be without combustion engines.