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>> and you might get some health benefits.

That depends. There are streets in the UK so polluted that jogging on them, breathing in lots more bad air, is actually worse for you than not jogging. Similarly, the violent accident rate for bicycle commuters is scary. I don't know of any regular commuter who hasn't been to hospital at least once.

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Both of those are more reasons to ban cars. ;) Most spot pollution is car exhaust, and most violent pedestrian/bike accidents are car-related.

In addition non-negligible sources of particulates are tyres and brakes wearing down.

I said violent accent, not cars. People commuting on bikes collide with other things than cars. Regular bike commuters can hit 50+kph. At those energy levels, hitting a curb or tree branch can put you in hospital.

The statistics show that even allowing for the risks cycling is better than not.

Having said that I have had a hospital visit.

Yes the last time I checked this was the case. Most western cities are clean enough that cycling is still a net-win.

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