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.
Federal Rules - Truck Weight. For interstate travel, there has been a load limit of 80,000 pounds [40 tons] since the billâs inception. That is without any oversize or overweight permits. The weight limit on single axles is 20,000 lbs, dual axles 34,000 and steer axles 12,000 lbs. Federal Rules â Truck Size. On federal highways, semi trucks can be up to 102 inches wide and tow one 48-foot trailer or (2) 28-foot trailers. There is no height limit, except for structural clearances.