3 ms·
For sufficiently low speeds, yes. The crossover point is not high. Something like 30km/h . Edit: Source https://www.researchgate.net/figure/Propulsion-noise-th
by gpm 3y ago
For sufficiently low speeds, yes. The crossover point is not high. Something like 30km/h .
Edit: Source https://www.researchgate.net/figure/Propulsion-noise-the-tyre-road-noise-and-the-total-A-weighted-level-from-a-passenger-car_fig4_266205731 https://www.researchgate.net/figure/Propulsion-noise-the-tyr...
- seszett 3y ago30 km/h is the maximum speed allowed in many cities (and a growing number of them) and even in cities where 50 km/h is allowed, the average speed is apparently around 30 km/h when traffic is minimal (in France, according to [0]) and 15 km/h otherwise. I think it's safe to say that electric cars reduce noise in cities, in fact I can observe it every day myself from my house. [0] https://www.francetvinfo.fr/replay-radio/le-vrai-du-faux/une-voiture-roule-en-moyenne-a-16-km-h-en-ville_1779119.html https://www.francetvinfo.fr/replay-radio/le-vrai-du-faux/une...
- shrx 3y agoThat's why electric cars are required to emit an artificial noise when driving under 30 km/h to alert the visually impaired pedestrians. The Renault Zoe car makes a very strange noise, almost like an alien flying saucer from a 60s movie.
- GuB-42 3y agoI understand the need for these noisemakers, having been startled a few times by electric cars moving at walking speeds as without a noisemaker, they are effectively silent. But these weird spaceship noises, I hate them, and for some reason, dogs seem the hate them too. So unnatural. I much prefer more typical noise like white noise, like a fan running. I think that studies have shown that white noise is particularly good for that purpose as the source can be located easily.