In D3T, the dynamics includes components like
Ride sharing strategy (most crucial),
Routing strategy,
Resource allocation strategy,
Capacity/speed of the transporter
etc. The network, in the most usual sense, can be some variation of the underlying transport network. However, conceptually completely different networks like sharability network \cite{santi_quantifying_2014} has also been proposed.
It is well known that dynamical components \cite{zhang_probability_2013,guan_efficient_2013,santi_quantifying_2014} of the system qualitatively influences phenomena like congestion \cite{hyytia_congestive_2010, de_martino_congestion_2009}, phase transitions \cite{barankai_effect_2012} etc. Although the role of sharing strategies is relatively understudied.
The broad question of how these influences change with network topology, is likely rich in possibilities.