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there are 200000x the number of private cars. are you sure?

Palomides 16 hours ago | parent | next [-]

it's widely accepted that trucks cause the majority of road wear, considering the tire is the softer part in contact there, it seems pretty plausible

I don't have a citation to point to, though!

edit: there are roughly 100x registered passenger cars in the US as semis

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SideQuark 16 hours ago | parent | next [-]

Well, given a semi only averages 8x the miles of a car per year, your initial claim is wrong.

https://afdc.energy.gov/data/10309

	▲	vigna 8 hours ago \| parent [-]
		Hi SideQuark. I'm writing you here as there's no contact email on your profile--I wanted to ask you if you ever tried a SAT solver on RomuTrio to find cycles (or you can give me some hints). I'm referring to this: https://news.ycombinator.com/item?id=22457101. You can write me at sebastiano.vigna@gmail.com. Thanks for any info! BTW, thanks for explaining that you cannot prove things about a single permutation using random permutations--it's so obvious that it is very difficult to explain, and the same absurd argument pops over and over.

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Aurornis 16 hours ago | parent | prev [-]

Road wear depends on weight.

Semi truck tires have hard, slow-wearing compounds.

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Spooky23 14 hours ago | parent | prev | next [-]

A fully loaded tractor trailer has 5 axles and weighs 80,000 lbs, it does 9000-10000x more damage than a passenger car.

This is why states operate weigh stations — overweight trucks cause significant damage.

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qwerty_clicks 16 hours ago | parent | prev | next [-]

Semi’s drive 12+ hours a day most days of the year. Passenger cars just go to work and they store and back.

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bsder 16 hours ago | parent | prev [-]

Your estimate isn't even close--you're off by about 4 orders of magnitude.

Fact: In California, the number of trucks is about 300K vs cars at 14M (about 40x).

Fact: California AADT on roads for trucks ranges from a couple of percent up to almost 50%. Very few roads have less than 10% AADT from trucks.

Fact: Damage to roads goes as fourth power of axle load.

Speculation: Given that tires are the primary means to transmit that damage to the roadway, it wouldn't surprise me if the trucks are responsible for the vast majority of tire particulates.

Reference: https://dot.ca.gov/-/media/dot-media/programs/traffic-operat...