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It's mostly for bikes before Euro4/5. Obviously, new bikes are one thing but most bikes in the USA are offenders of pollution. A statistic for CA was motorcycl
by bradlys 6y ago
It's mostly for bikes before Euro4/5. Obviously, new bikes are one thing but most bikes in the USA are offenders of pollution.
A statistic for CA was motorcycles make up 1% of my miles driven but 10% of smog pollutants.
- kube-system 6y agoBikes didn't require catalysts for a long time. And they often used less-precise fueling systems, like carburetors. But that has changed or is changing in a lot of places more recently.