Before you ship your freight, or even call anyone, it pays to do some research and know the current market. These links will help you find out all the answers you need when deciding what to charge, whether you are shipping or a trucking company. You can also find the latest relevant news here.
The freight market is constantly changing. It depends not only on supply-and-demand, but also the location of the shipment and its destination, the time of year, and a lot of other variables.