What class of CDL do line and utility electricians need?

A single heavy truck such as a digger derrick rated over 26,000 pounds needs a Class B CDL. A truck pulling a pole or reel trailer rated over 10,000 pounds, with a combined rating of 26,001 pounds or more, needs a Class A, which covers Class B vehicles too. Test in a truck with air brakes and a manual transmission to avoid license restrictions.