It's not a 'matter of manners.' The reasons for the danger are obvious from a mechanical perspective — The 'structural characteristics' of bicycles, electric-assist bicycles, and specified small motorized bicycles
Straight-line restoration force is almost zero: Because the front wheel does not return to the center on its own, you cannot go straight unless a human continuously makes millimeter-level corrections with the muscles of both arms. Direct impact of disturbances:…