Can you explain where you see a "negotiation" in this? (Don't get me wrong, I like the cut of your jib, it just seems to map better to a dysfunctional spread-based market.)
The drivers are offered a certain rate. They refuse, implicitly asking for a higher rate. This repeats until the drivers get a rate they can accept, or they give up and go home.
On the other side, passengers are offered a certain rate. They can accept it, or they can refuse and implicitly ask for a lower rate.
On the other side, passengers are offered a certain rate. They can accept it, or they can refuse and implicitly ask for a lower rate.