Individuals operating large recreational vehicles often ask if a special driver’s license is required. Because driver’s licenses are issued by each state (and Washington D.C.), the rules vary.
We have researched RV driver’s license requirements for all fifty states plus D.C. and compiled the summary below. Our primary source of information were the official driver’s license web sites for each jurisdiction. In cases of insufficient or conflicting information, we called the appropriate departments to confirm.
See full article here: http://changingears.com/rv-sec-state-rv-license.shtml