3 ms·

How do they plan to measure particle emissions? Any kind of rolling road is sure to make large numbers of particles itself. Besides - most tyre particles are

How do they plan to measure particle emissions? Any kind of rolling road is sure to make large numbers of particles itself. Besides - most tyre particles are emitted when going round corners and accelerating hard to cause wheel slip, which can't be done on a rolling road. Or they do it on a real road - but how many particles will come from the tyres and brakes, and how many will come from the road itself or other pollution sources?

actionfromafar 3y ago
I don't know but it's bloody well time. Particles are a bane on city life.
- epolanski 3y ago
  They are also the primary cause of microplastics pollution. Anyway, I find it ridiculous that they don't limit the speed more, when speed is the primary factor behind unnecessary emissions and tyre wear.
- londons_explore 3y ago
  For anyone who lives in a city... I'd suggest getting an air filter - any pollen/HEPA filter will do a good job of de-dusting your house. Just a $20 unit from Amazon will do - put it in a hallway and it will get most of your house air as long as you don't keep external windows wide open. As well as keeping your indoor air cleaner, you'll also find that you have to clean dust off surfaces less frequently. I suspect there are big health benefits too, but can't prove that. After a few months, the filter turns from white to dark grey, but I've found it keeps working for even years after that - you would expect it to get full and get blocked, but I guess tiny particles take a real long time to block it.
nordsieck 3y ago
> How do they plan to measure particle emissions? Presumably you weigh the tires at the beginning, and then again at the end.
maccard 3y ago
From the article, > The Commission should prepare a report on tyre abrasion by the end of 2024 to review the measurement methods and state-of-the-art in order to propose tyre abrasion limits by December 2025 at the latest, should the work on tyre abrasion done at UN WP 29 be delayed. this document isn't them saying "this is how we're going to do it", it's saying "this is what we're going to do".
- dappermanneke 3y ago
  there’s going to be more jobs for ultraspecialised and well connected consultants and ngos in brussels is how you can read that sentence
dharmab 3y ago
There are machines designed for testing tires and axles that go around corners under load- for example, the fatigue carousel at University Gustave Eiffel, currently used to test pavement. I could imagine such a machine rolling tires in a closed environment and comparing to reference data. https://lames.univ-gustave-eiffel.fr/en/equipments/the-pavement-fatigue-carrousel https://lames.univ-gustave-eiffel.fr/en/equipments/the-pavem...

actionfromafar 3y ago

I don't know but it's bloody well time. Particles are a bane on city life.

epolanski 3y ago
They are also the primary cause of microplastics pollution. Anyway, I find it ridiculous that they don't limit the speed more, when speed is the primary factor behind unnecessary emissions and tyre wear.
londons_explore 3y ago
For anyone who lives in a city... I'd suggest getting an air filter - any pollen/HEPA filter will do a good job of de-dusting your house. Just a $20 unit from Amazon will do - put it in a hallway and it will get most of your house air as long as you don't keep external windows wide open. As well as keeping your indoor air cleaner, you'll also find that you have to clean dust off surfaces less frequently. I suspect there are big health benefits too, but can't prove that. After a few months, the filter turns from white to dark grey, but I've found it keeps working for even years after that - you would expect it to get full and get blocked, but I guess tiny particles take a real long time to block it.

nordsieck 3y ago

> How do they plan to measure particle emissions? Presumably you weigh the tires at the beginning, and then again at the end.

maccard 3y ago

From the article, > The Commission should prepare a report on tyre abrasion by the end of 2024 to review the measurement methods and state-of-the-art in order to propose tyre abrasion limits by December 2025 at the latest, should the work on tyre abrasion done at UN WP 29 be delayed. this document isn't them saying "this is how we're going to do it", it's saying "this is what we're going to do".

dappermanneke 3y ago
there’s going to be more jobs for ultraspecialised and well connected consultants and ngos in brussels is how you can read that sentence

dharmab 3y ago

There are machines designed for testing tires and axles that go around corners under load- for example, the fatigue carousel at University Gustave Eiffel, currently used to test pavement. I could imagine such a machine rolling tires in a closed environment and comparing to reference data. https://lames.univ-gustave-eiffel.fr/en/equipments/the-pavement-fatigue-carrousel https://lames.univ-gustave-eiffel.fr/en/equipments/the-pavem...