Do you have to have a special driver's license?

May different states have different terms.... I don't know. My Delaware License is a CDL Class A, that lets me drive tractor trailer. A Class B is for straight truck, OVER 26,001 pounds. Some states now require "endorsements" and/or a NON-CDL for weight or length or both. As the saying goes, "It's a crap-shoot out there", but whatever is valid in YOUR HOME STATE, is good throughout the rest of the states.