Last name: Kiefer. This interesting and unusual surname is of Germanic origin, and is a metonymic occupational name for a maker or repairer of wooden vessels such as barrels, tubs, casks and vats. The derivation is from the German kief(e), kufe, itself coming from the Old High German kuofa, barrel.
Commercial Driver's License (CDL) A CDL is required to drive any of the following vehicles: Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
You must have a CDL license to operate: 1  Any single vehicle with a gross vehicle weight rating (GVWR), actual weight, or registered weight over 26,000 lbs. or such vehicle towing a vehicle with a. GVWR, actual weight, or registered weight of 10,000 lbs. or less.