What a load pays divided by the miles it runs.
Usually quoted all-in, meaning the linehaul and the fuel surcharge together. Always check which one a broker means before you agree.
A rate per mile is only meaningful against loaded miles or total miles, and people quote whichever flatters the load. Two hundred miles of deadhead to reach a $2.40 load is not a $2.40 load.
Related
Inteleri works out what a load actually pays you once things like this land. See how it works.