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.
These questions will have to come with all kinds of qualifiers. First of all, every state has weight limits for trucks. Twenty-six states maintain minimum federal gross vehicle weights (weight of truck and load) of 80,000 pounds, while 19 states permit trucks of 105,000 pounds or more. Michigan tops the list with 115,000 pounds.