I spose it's no different to cars on a road, though.
If everyone was constantly trying to overtake everyone else without ever looking in their mirrors and without leaving any room between them and the person ahead.
So you're saying bicyclers should undergo some sort of compulsory training and maybe a test to make sure they're safe on the road? I see you. You big Daily Mail reader.
If everyone was constantly trying to overtake everyone else without ever looking in their mirrors and without leaving any room between them and the person ahead.