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The video mentions porous asphalt as one way to limit road noise. I hadn't heard of that before. I also liked the idea of planting the ground that streetcar t
by elihu 5y ago
The video mentions porous asphalt as one way to limit road noise. I hadn't heard of that before.
I also liked the idea of planting the ground that streetcar tracks run through with grass.
- wodenokoto 5y agoThe slicker you build the road, the less noise and traction you have. There’s a whole science around balancing noisiness of roads and brake length. Porous roads sounds like sand or gravel. Not great for driving or for noise.
- thepete2 5y agoWell money is also part of the equation. Or is there an even cheaper option that beats those porous roads?
- jaclaz 5y agoAFAIK porous asphalt (which is often called draining asphalt here) is a very good thing (for rain) and driving (braking/adherence is excellent) but not particularly good for noise. https://en.wikipedia.org/wiki/Permeable_paving#Porous_asphalt https://en.wikipedia.org/wiki/Permeable_paving#Porous_asphal... it is largely used in highways, actually near 100% of highways in Italy are paved with this kind: https://www.autostrade.it/en/tecnologia-sicurezza/sicurezza/pavimentazione-asfalto-drenante https://www.autostrade.it/en/tecnologia-sicurezza/sicurezza/... Since several years they are experimenting in various EU cities, particularly for roads restricted to buses, a type of asphalt that incorporates (recycled) rubber which reduces effectively a part of the noise and vibrations, but is seemingly used in US too: https://en.wikipedia.org/wiki/Rubberized_asphalt https://en.wikipedia.org/wiki/Rubberized_asphalt