1. A system for use with a vehicle comprising a tractor and a trailer, the system comprising: one or more image capture devices, each image capture device configured to capture images of one or both of: an interior of a trailer; and cargo items of the trailer; and an image processor configured to estimate an amount of available cargo space within the trailer based on the images, wherein the amount of available cargo space within the trailer comprises a plurality of different types of available cargo space associated with different cargo item characteristics, and the image processor is configured to determine amounts of the different types of available cargo space; wherein the image processor is configured to identify a plurality of different types of available cargo space comprising a plurality of: cargo space available for fragile items; cargo space available for valuable items; cargo space available taking into account allowed stacking limits; cargo space available for items that can be placed on bottom, middle, top; cargo space available based on trailer weight loading criteria; cargo space available based on dimensions or shape: cargo space available taking into account delivery priorities and stops along a route; cargo space available taking into account pack together instructions; cargo space available taking into account allowed orientations; and cargo space available based on weight.