Originally Posted by
Dicknose
Billi, 3 wheelies are not as stable as 4.
Interestingly they are not as stable as 2 when cornering. (But more stable when stopped)
They do tend to roll over. Made worse the closer the centre of mass is to the single wheel. Putting a 2nd person behind nearer the rear would make it less stable and more likely to roll over.
As for regs, it's a double edge sword. Here if you fall under motorcycle rules then you need a motorcycle license and helmet. That's considered a bigger pain than passing car regs.