Looking at the OECD report (possibly the wrong one?) I couldn't find any mention of bicycles except as an alternative to cars to mitigate the problem... Given the faaaar lower mass even of heavy bicycles, I would want to see the actual evidence before worrying too much about the bike contribution to particulate pollution.
(rider mass / vehicle mass is a lovely shorthand for vehicle efficiency, as it says a lot about how much acceleration you're 'wasting' on the vehicle. Braking, of course, produces a negative acceleration, so lower mass ratio ~> better efficiency. Aim for a ratio of < 1.0...)
(rider mass / vehicle mass is a lovely shorthand for vehicle efficiency, as it says a lot about how much acceleration you're 'wasting' on the vehicle. Braking, of course, produces a negative acceleration, so lower mass ratio ~> better efficiency. Aim for a ratio of < 1.0...)
https://www.oecd-ilibrary.org/sites/4a4dc6ca-en/1/3/2/index....