Fig. 2

Volume with stop-list length. a ring graph together with its approximation from Eq. 9 and b star graph together with its approximation from Eq. 10. The analytical approximation for V_rest from Eq. 6 slightly overestimates the drop-off volume, indicating that the insertions of the pick-ups are not uniformly random across the whole length of the route. c V_rest approaches N indeed as 1/n in the asymptotic limit, as predicted in Eq. (7)