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> What this tells me is that the internal combustion engine is a bad idea everywhere but especially in a dense urban core. Engine noise only dominates up to ro
by Xylakant 3y ago
> What this tells me is that the internal combustion engine is a bad idea everywhere but especially in a dense urban core.
Engine noise only dominates up to roughly 20mph, at higher speeds the tire noise is the dominating component until roughly 100mph where wind becomes the dominant.
So this:
> The solution to road noise doesn’t have to be a dramatic rezoning and a reversion to Europe everywhere. It could be to make cars and trucks quieter.
Would mean both switching to electric cars and reducing speeds significantly to less than 20mph.
- fnordpiglet 3y agoThis is about the urban core. Speed in the urban core in every US city I know is 20.
- Xylakant 3y agoI don’t think that average speed is the relevant measure here. Top speeds would still be noisy. But even at average speed you’d see no noise reduction from electric cars since 20mph is the point where tires are as loud as the engine. So the average would need to go down.