Handling freight in a dream can represent the burden of work. It can also refer to burdens of care, responsibility, or difficulty. If you are carrying a load, this may be referenced in your dream as dealing with freight.
Causes for freight to appear in your dreams could be too many projects or assignments at work or school, feeling overworked because you feel like there is always something more you could do, feeling burdened by responsibilities at home and feeling like there is no time to focus on yourself without sacrificing other things.
Extra freight in a dream may also represent issues that you are still carrying around. This can be emotional baggage, physical baggage or any other form of baggage that you are carrying around with you. It is possible to have the dream as a reminder of how much you are still carrying around and how it is holding back your progress.