>"Judging by historical bike registration programs." Well most bicycle licensing programs ended decades ago. I think it would be far more efficient and cheape

>"Judging by historical bike registration programs." Well most bicycle licensing programs ended decades ago. I think it would be far more efficient and cheaper to implement such a system a now. >"Technically speaking, what ID would be visible to traffic cameras?" A small RFID transponder on the bike and an antenna mounted over the bike lane at an intersection. The antenna activates the transponder. This is similar to how the EZ-Pass toll system works in the US. Cars come in many shapes and sizes too and it works just fine .