Abstract: Systems and methods for control of a vehicle fleet system are provided. The vehicle fleet system may include a dedicated carrier fleet having dedicated carrier vehicles operated by a dedicated fleet control system. The dedicated fleet control system may be in communication with a common carrier control system of a common carrier fleet and may operate to assign various shipments among the dedicated carrier vehicles and the common carrier fleet. In particular, the dedicated fleet control system may selectively assign the one or more shipments to the dedicated fleet or the common carrier fleet based on dedicated carrier constraints and common carrier constraints. The selective assignment may be based, in part, on a cost model that includes or excludes fixed costs for the dedicated carrier fleet.