[derekp7]

I thought about having a small flag on a really sharp antenna-style post sticking on the left side of the bike. About a foot or two, laying parallel to the ground should do. That would encourage drivers to give a bit more room, as they are probably more afraid of getting their car scratched up then they are of hitting someone.

[joonix]

That still does nothing about the distracted driver. They aren't going to see the flag if they're looking down at their phone laughing and writing a text.