The disclosed systems, methods, apparatuses, and computer programs embodied on computer-readable media may enable a shipping carrier to determine the utilization of a trailer in a delivery network by receiving and aggregating disparate types and sources of shipping information, including, for example, package billing data from a customer order, scan data from the loading and unloading of packages transported by the trailer, dimensional data received from dimensional scans of packages at carrier shipping hubs, and/or trailer data including the volume of the trailer. Utilization may be determined for each trailer in a carrier delivery network or for a subset of trailers in the network. The determined utilizations may be used to determine the parameters for an optimized delivery network, which may include the addition, elimination, and/or modification of the delivery schedule. Network optimization may be an iterative process that may be continually performed using continually updated trailer utilization statistics.