if the botom B was down in the normal position you could use stilts and there should be no problems stoping at lights.
on the other hand my dad was saying it was big when he was a kid to flip the frame of a normal bike upsidedown and put on a long seatpost and hanlebar riser. made for a 6 foot ride and some dented car roofs(their mounting/dismounting method was to use a car)