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EVs help with air pollution & congestion, but a huge part of the AQI impact of cars is tires, and I don't think there's a solution for that yet short of "fewer
by milesskorpen 9mo ago
EVs help with air pollution & congestion, but a huge part of the AQI impact of cars is tires, and I don't think there's a solution for that yet short of "fewer cars"
- amanaplanacanal 9mo agoHow do EVs help with congestion? They take up the same amount of space as an ICE car.
- crazygringo 9mo agoEV shuttles will come in lots of capacities. Vans, buses. But you won't need to worry about schedules or preset routes because it's all dynamic. Wherever there would be the most congestion is precisely where the app will give you the biggest discount to switch from your private vehicle into a bus, then switch back into another private vehicle for the last 5 minutes of your trip.
- amanaplanacanal 9mo agoNone of what you are saying has anything to do with being an EV vehicle.
- crazygringo 9mo agoDerp. Quite right. For some reason I was thinking about self-driving instead...
- dzhiurgis 9mo agoThey can go into cheap, boring tunnels (little ventilation requirements)
- bmicraft 9mo agoThey can't (fire safety requirements make all tunnels expensive)
- milesskorpen 9mo agoI was thinking autonomy, but you're right for EV alone.
- d_sem 9mo agoelectric bicycles have significantly less tire waste.
- Ar-Curunir 9mo agoHow do EVs help with congestion
- Aloisius 9mo agoI thought the tire wear particulates being a huge source of particulate air emissions was an overestimate due to misunderstanding and misquotation of primary literature by secondary literature used by regulatory agencies. https://pubs.acs.org/doi/10.1021/acs.estlett.4c00792 https://pubs.acs.org/doi/10.1021/acs.estlett.4c00792
- milesskorpen 9mo ago1/6 is a lot lower (good!) but is that sufficient to say they're not a large source of particulate air emissions?
- Aloisius 9mo agoWell, scanning an article on it for Manhattan, the fraction of "road dust" PM2.5 looks like somewhere around 2-5% depending on time of year, which is a bit below contributions by sea salt. From my limited reading, what fraction of road dust is from tire tread is unclear. The models trying to estimate it give anywhere numbers from 4 to 48%, but may be incorrect due to the citation problem above. Experiments seem to show 4-9%, but they have trouble excluding resuspended dust. I'd also point out that if we're worried about air quality in NYC between modes of transport, then one should look at subways since PM2.5 in stations/tubes is many times that of the street and far exceeds EPA limits.
- rcpt 9mo agoBraking dust is worse than tires, and EVs don't use brake pads nearly as much because they rely on regenerative braking.