3 ms·
Most of the noise at speeds greater than a few km/h is wheel noise and air noise. The engine noise plays a very small role at higher speeds. An electric 18-wh
by konschubert 9y ago
Most of the noise at speeds greater than a few km/h is wheel noise and air noise.
The engine noise plays a very small role at higher speeds.
An electric 18-wheeler running down the highway will not be significantly quieter than one with an ICE.
- sliverstorm 9y agoTire noise, specifically, from the rubber flexing and air whooshing as it gets compressed out of the contact patch. An electric 18-wheeler though could actually wind up a lot quieter- the noisiest thing about them is the Jake brake, and regenerative braking could do that silently.
- legulere 9y agoI really like this graphic for that effect: http://www.leiserstrassenverkehr.bayern.de/assets/stmi/vum/strasse/fittosize__620_240_53282c6c94df294eeee545ab11a5532c_leiserverkehr_entstehung.jpg http://www.leiserstrassenverkehr.bayern.de/assets/stmi/vum/s... Yellow is trucks, blue is cars. Full line is total noise, broken line is noise by wind and tires, dotted is noise by the motor.