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Dust from car brakes more harmful than exhaust, study finds

e360.yale.edu

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Re: Dust from car brakes more harmful than exhaust, study finds

#61

Post by FreebasingLLMs »

digdugdirk wrote: post #25
xhkkffbf wrote: post #14

Earlier quoted context omitted.

I think the key is to make a class of light-weight EVs with smaller, lighter batteries for life around town. Most of us rarely drive more than a few dozen miles a day. But then there are those weekend trips.

That's a great idea. And since it'll be limited to in town use, something narrower might be useful - maybe give it two wheels instead of four? That'd be huge for reducing weight and increasing range. And for suitable geographic areas, it might even be possible to make one light enough that it could be powered by the rider, no external power source required! Then, with the reduction in width required for these futuris…

You have a weird dream of how people should use transportation. People like what they like. They like individual cars with 4 wheels. They don't want to share transportation with random people.

Re: Dust from car brakes more harmful than exhaust, study finds

#62

Post by marcosdumay »

nayuki wrote: post #44
marcosdumay wrote: post #36

Earlier quoted context omitted.

The exhaust used to be really nasty until just a little while ago. Nobody was focusing on the less harmful emissions. Now we mostly fixed it, so it's time to look at the other stuff.

> The exhaust used to be really nasty Specifically: Leaded gasoline (with tetraethyllead), nitrogen oxides (NOx), sulfur oxides (SOx), carbon monoxide (CO), unburned hydrocarbons. https://en.wikipedia.org/wiki/Tetraethyllead , https://en.wikipedia.org/wiki/Sulfur_oxide , https://en.wikipedia.org/wiki/NOx

Don't forget about the solid particles.

Re: Dust from car brakes more harmful than exhaust, study finds

#63

Post by ajmurmann »

xhkkffbf wrote: post #14
ndsipa_pomu wrote: post #7

I think this is missing out on the big issue - tyre pollution which contains really nasty chemicals that inevitably get washed into rivers and waterways. Also, car-shaped EVs often use regenerative braking which will reduce the amount of brake dust pollution, but with their increased weight and powerful torque, they produce a lot more tyre pollution than ICE vehicles. https://earth.org/tyre-pollution/

I think the key is to make a class of light-weight EVs with smaller, lighter batteries for life around town. Most of us rarely drive more than a few dozen miles a day. But then there are those weekend trips.

I'd love one of these as an electric commuter vehicle: https://pressroom.toyota.com/album/toyota-i-road/

Unfortunately it seems to have gone nowhere

Re: Dust from car brakes more harmful than exhaust, study finds

#64

Post by nameequalsmain »

jlnthws wrote: post #52

This is the regular current taboo. Micro-dust from tires and brakes contributes to half of an ICE vehicle’s pollution, with the other half coming from exhaust emissions. The amount of this micro-dust scales with a power of the vehicle’s weight, typically between the square and cube for cars, and up to the fourth power for heavy trucks. EVs are 30–60% heavier than their ICE counterparts. Assuming all other factors rem…

Don't most EVs use regenerative braking though? That should offset their weight a fair bit I imagine.

Re: Dust from car brakes more harmful than exhaust, study finds

#65

Post by kraftman »

jlnthws wrote: post #52

This is the regular current taboo. Micro-dust from tires and brakes contributes to half of an ICE vehicle’s pollution, with the other half coming from exhaust emissions. The amount of this micro-dust scales with a power of the vehicle’s weight, typically between the square and cube for cars, and up to the fourth power for heavy trucks. EVs are 30–60% heavier than their ICE counterparts. Assuming all other factors rem…

All other factors arent constant though: EVs use their brakes much less.

Re: Dust from car brakes more harmful than exhaust, study finds

#66

Post by ndsipa_pomu »

cryptonector wrote: post #42
ndsipa_pomu wrote: post #7

I think this is missing out on the big issue - tyre pollution which contains really nasty chemicals that inevitably get washed into rivers and waterways. Also, car-shaped EVs often use regenerative braking which will reduce the amount of brake dust pollution, but with their increased weight and powerful torque, they produce a lot more tyre pollution than ICE vehicles. https://earth.org/tyre-pollution/

Both are mentioned. Did you read TFA?

From: https://news.ycombinator.com/newsguidelines.html

Please don't comment on whether someone read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that".

Re: Dust from car brakes more harmful than exhaust, study finds

#67

Post by ravetcofx »

t-3 wrote: post #24
Ericson2314 wrote: post #16

Earlier quoted context omitted.

Those are called e-bikes

E-bikes are unusable at this time of year. It needs to stand stably on it's own to not kill me the instant some ice appears (so, four wheels) and have an enclosed cabin to stop frostbite.

Dress warm, studded tires. People are so averse to any non ideal weather for cycling. Texas, Arizona and Nevada people say it's too hot, West coasters say too much rain, other places say snow and ice. All excuses that can be solved by better personal preparation mixed with safer better maintained cycling infrastructure. https://m.youtube.com/watch?v=Uhx-26GfCBU

Re: Dust from car brakes more harmful than exhaust, study finds

#68

Post by ajmurmann »

Ericson2314 wrote: post #16
xhkkffbf wrote: post #14

Earlier quoted context omitted.

I think the key is to make a class of light-weight EVs with smaller, lighter batteries for life around town. Most of us rarely drive more than a few dozen miles a day. But then there are those weekend trips.

Those are called e-bikes

What stops me from biking is cars. I simply don't feel safe on a bike next to a giant pickup truck where I gotta pray the driver sees me, isn't on the phone or otherwise distracted.

Re: Dust from car brakes more harmful than exhaust, study finds

#69

Post by jeffbee »

ndsipa_pomu wrote: post #43
foobazgt wrote: post #17

Earlier quoted context omitted.

This is fake news. The backing study for this claim did all sorts of wonky unrealistic testing to come to this conclusion. If you own an EV, you viscerally know it's BS given that you're the one paying for the actual tire replacements on your real-world driven vehicle.

I don't think it's fake as there's plenty of reports that EVs do go through tyres quicker. A quick search brings up many articles on the phenomenon e.g. https://www.pcmag.com/news/the-unexpected-problem-with-evs-t...

There's nothing categorical about EVs that make them eat tires. The aggregate data about average EV tire life is skewed by the relative popularity of and poor choices made by Tesla.

Re: Dust from car brakes more harmful than exhaust, study finds

#70

Post by mrtksn »

jlnthws wrote: post #52

This is the regular current taboo. Micro-dust from tires and brakes contributes to half of an ICE vehicle’s pollution, with the other half coming from exhaust emissions. The amount of this micro-dust scales with a power of the vehicle’s weight, typically between the square and cube for cars, and up to the fourth power for heavy trucks. EVs are 30–60% heavier than their ICE counterparts. Assuming all other factors rem…

How about recuperation? Do electric cars use as much breaking as an ICE vehicle with the same weight?
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