In addition to the comment of Søren, I would like to challenge you on if there maybe are some more right holders then Motorcyclists and Motorcycle passengers.
Depending on the focus problem you identified, other people on the streets may also be right-holders, and could be important to include, as you may find supporters or opponents there.
Depending on the focus problem you identified, other people on the streets may also be right-holders, and could be important to include, as you may find supporters or opponents there.