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Power only means the tractor
Someone else owns the trailer. Confirm which one.
Power only is a tractor and a driver. The trailer may be a shipper pool, a dropped van, or a chassis. If you cannot name it, you do not dispatch the driver to go find it.
The carrier you represent is still the one on the agreement. Handing the hook to a different carrier is not a shortcut.
The course that goes further is Dispatch foundation. Reading this note does not enroll you.