Here is a good information site for the Trucking Industry in near real time (They release information regularly) which contains all you could wish to know about the Finances inside the Industry and freight etc.
Example, freight rates billed and paid for by the mile is charted. Or the situation related to intermodal boxes. Perhaps truck loading situation. Driver count, hire and fires. Possibly a wealth of other information as to the state of the Industry in these United States overall.
http://www.cassinfo.com/en/Transpor...ly-Chain-Analysis/Transportation-Indexes.aspx
I hope you enjoy this resource. Good luck!