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The problem pollutants for vehicles are NOx and particulate (particularly small particulate under 2.5 or 10 microns in diameter). This test found the truck prod
by Brakenshire 8y ago
The problem pollutants for vehicles are NOx and particulate (particularly small particulate under 2.5 or 10 microns in diameter). This test found the truck produced a lot of NOx, and didn't test for particulate matter, so it's not really able to say what you want it to say.
- blattimwind 8y agoLeaf blowers are two-stroke engines which have an entirely (and much worse) emissions profile compared to modern four stroke engines. E.g. you'll find things like benzene in their exhaust. Hence results like "waiting near a 2-stroke scooter on an intersection is orders of magnitudes more poisenous than waiting near a car".
- kazinator 8y agoYet, 2 stroke scooters don't have to have the same emission controls as automobiles. This is because they have a small carbon footprint; as a class, they don't contribute that much to pollution. Benzene may be more acutely poisonous than some other molecule which also has six carbon atoms, but from the planet's perspective, it's just six carbon atoms. If you're breathing any exhaust, you're taking in CO. Less pungent smelling exhaust is not any better for you.