EVs DO NOT EMIT MORE PM

Recently @OECD published a report about particulate matter (PM) from road transport. Newspaper headlines blared that electric vehicles where worse than combustion vehicles. That conclusion was wrong according to the report itself.

Let me show you.

The report (published december 7) can be found here: https://t.co/1HpicKexOt
It's main point is well taken: as cars get cleaner, fine particles emitted by brakes, tires and road surfaces will become more important.
The table comparing electric and combustion engines is on page 92. I took averages of low and high values to get the graph in the first tweet.
I merely took the averages. To get this.
I think it is a terrific report that pulls together a LOT of literature on fine particles that cars spew into the air and that make us sick.

We have ignored this problem for too long, and there's more here than simply exhaust!
I have just two gripes with the article:

1) Electric vehicle weight
It estimates batteries at 10 kg/kWh when in reality it's already below half of that. So it makes electric vehicles much too heavy and doesn't take into account that in 2030 they will be much lighter still.
2) Simply comparing grams
We know that the stuff that comes out of the exhaust pipe is really bad for your health.

How that compares to sand and rubber from the road (gram for gram and particle for particle) is still completely unclear. They state this clearly themselves.
We know that a lot of the stuff in there can be bad for your health (see table).

But how much is how bad and what is the impact of particle size? For the stuff that's not from the exhaust we basically have no idea.
These studies about road dust are the closest the report comes to quantifying this but as you can see it's a mess.
Even how vehicle characteristics influence PM is only very vaguely know.
So for me the summary:

We know particles emitted from the road and the wheels of cars make us sick but that's about it. More research is urgently needed so we can avoid millions of deaths.
And there is a LOT we can do!

By switching to electric vehicles we are probably eliminating some of the most harmful emissions (from tailpipes and brake pads).

We could try to make tires more wear resistant (probably not a top priority of manufacturers).
We can find out what materials in tires are worst and leave them out.

We can construct roads in a way that traps part of the particles or we might even vacuum them up before they are released out into the open.https://t.co/mxA62vhuDG
Most importantly we should use lighter cars. So a monster like this Cybertruck certainly doesn't make your neighborhood safer or healthier.
Bottom line: electric cars are less bad for the climate and air quality than regular cars, but once they eliminate tailpipe and brake pad emissions we should focus on emissions from tires and roads. And that's almost virgin territory. Time to get to work on that!

More from Economy

1/ To add a little texture to @NickHanauer's thread, it's important to recognize that there's a good reason why orthodox economists (& economic cosplayers) so vehemently oppose a $15 min wage:

The min wage is a wedge that threatens to undermine all of orthodox economic theory.


2/ Orthodox economics is grounded in two fundamental models: a systems model that describes the market as a closed equilibrium system, and a behavioral model that describes humans as rational, self-interested utility-maximizers. The modern min wage debate undermines both models.

3/ The assertion that a min wage kills jobs is so central to orthodox economics that it is often used as the textbook example of the Supply/Demand curve. Raise the cost of labor and businesses will buy less of it. It's literally Econ 101!


4/ Econ 101 insists that markets automatically set an efficient "equilibrium price" for labor & everything else. Mess with this price and bad things happen. Yet decades of empirical research has persuaded a majority of economists that this just isn't

5/ How can this be? Well, either the market is not a closed equilibrium system in which if you raise the price of labor employers automatically purchase less of it... OR the market is not automatically setting an efficient and fair equilibrium wage. Or maybe both. #FAIL

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Хајде да направимо мали осврт на случај Мика Алексић .

Алексић је жртва енглеске освете преко Оливере Иванчић .
Мика је одбио да снима филм о блаћењу Срба и мењању историје Срба , иза целокупног пројекта стоји дипломатски кор Британаца у Београду и Оливера Иванчић


Оливера Илинчић је иначе мајка једне од његових ученица .
Која је претила да ће се осветити .

Мика се налази у притвору због наводних оптужби глумице Милене Радуловић да ју је наводно силовао човек од 70 година , са три бајпаса и извађеном простатом пре пет година

Иста персона је и обезбедила финансије за филм преко Беча а филм је требао да се бави животом Десанке Максимовић .
А сетите се и ко је иницирао да се Десанка Максимовић избаци из уџбеника и школства у Србији .

И тако уместо романсиране верзије Десанке Максимовић утицај Британаца

У Србији стави на пиједестал и да се Британци у Србији позитивно афирмишу како би се на тај начин усмерила будућност али и мењао ток историје .
Зато Мика са гнушањем и поносно одбија да снима такав филм тада и почиње хајка и претње која потиче из британских дипломатских кругова

Најгоре од свега што је то Мика Алексић изговорио у присуству високих дипломатских представника , а одговор је био да се све неће на томе завршити и да ће га то скупо коштати .
Нашта им је Мика рекао да је он свој живот проживео и да могу да му раде шта хоће и силно их извређао