Motivated by the change in mobility patterns, we present a new modeling
approach for the vehicle-sharing problem. We aim at assigning vehicles to
user-trips so as to maximize savings compared to other modes of transport. We
base our formulations on the minimum-cost and the multi-commodity flow problem.
These formulations make the problem applicable in daily operations. In the
analysis we discuss an optimal composition of a shared fleet, restricted sets
of modes of transport, and variations of the objective function

Enzi, Miriam