Depends. If its transporting a quantity of hazardous materials which requires the display of placards or else is a bus designed to transport more than 15 persons (including the driver), then it's a commercial vehicle at any weight which requires the appropriate class of CDL and endorsements (for a vehicle under 26,001 GVWR/GCWR, it's a minimum Class C CDL), and all logging and HOS regulations apply.
It depends. If it's a vehicle of more than 10,000 lbs. GVWR being used in interstate commerce, yes. If it's a vehicle over 26,000 lbs. GVWR, yes. If it's a vehicle under 26,000 lbs. GVWR but it either a bus designed to transport more than 15 persons or is carrying a hazmat load which needs to be placarded, yes. In the case of the latter three, you also need a CDL.
If you're carrying quantities of oxyacetylene and oxygen which require the display of placards, and/or the vehicle has a Gross Vehicle Weight Rating of more than 26,000 lbs., then yes you do. If it's under 26,000 lbs. GVWR and you must show hazmat placards for oxygen and acetylene, you need at least a Class C CDL with a hazmat endorsement. If you're not carrying those commodities in a quantity which requires placarding, you don't need a CDL. If the vehicle is a single vehicle or combination of over 26,000 lbs. GVWR/GCWR, and there is no trailer or a trailer in tow is under 10,000 lbs. GVWR, then you'll need a Class B CDL (with hazmat endorsement if applicable). If the vehicle is a combination with a higher than 26,000 lbs. GVWR, and the trailer in tow has a GVWR of more than 10,000 lbs., a Class A CDL is required (with hazmat endorsement if applicable).
Depends on the vehicle itself. Any vehicle used for commercial purposes is a commercial vehicle. Vehicles requiring a Commercial Drivers License (CDL) are defined as a Commercial Motor Vehicle (CMV) by the Federal Motor Carrier Safety Administration, but commercial vehicles can be of a lower GVWR than a CMV. Anyone driving a commercial vehicles over 10,000 lbs. GVWR is supposed to possess and retain a DOT medical card, and any commercial vehicle over 26,000 lbs. GVWR requires a CDL, as well as any vehicle of any GVWR which is a bus designed to transport more than 15 persons (including the driver) or is carrying a quantity of hazardous materials which requires hazmat placards to be displayed.
Typically, no. However, if you're operating a commercial vehicle with a GVWR of more than 10,000 lbs. across state lines, then you do. To give you an idea, the Ford F350 has a GVWR of 13,000 lbs.
If you mean a class C driver's license- Class C is valid for single vehicle with GVWR of less than 26,001 lbs. or vehicle towing another vehicle that has a GVWR that does not exceed 10,000 lbs., which includes vehicles designed to carry 16 or more passengers with the driver, and vehicles used to transport hazardous materials.
Depends on the GVWR of the vehicle. 26,000 lbs. or less, and the answer is no (unless you're hauling something which requires a hazmat endorsement, such as contaminated soil). GVWR of more than 26,000 lbs, and the answer is yes.
YES!Exempted vehicles for smog:HybridGasoline powered 1975 year model or olderDiesel powered manufactured prior to 1998 or with a Gross Vehicle Weight rating (GVWR) of more than 14,000 lbsElectricNatural gas powered with a GVWR rating of more than 14,000 lbs.MotorcycleTrailer
Whether it has air brakes or not has absolutely zero impact as to whether the vehicle requires a CDL. None, whatsoever. Now the Gross Vehicle Weight Rating of the vehicle will make a difference. If it's under 26,000 lbs. GVWR, a CDL is not required (if it's over 10,000 lbs. GVWR, however, a valid and current DOT medical card will be required). If it's a single vehicle over 26,000 lbs. GVWR, and is not pulling a trailer rated at more than 10,000 lbs. GVWR, a Class B CDL will be required.
Any commercial use vehicle with a GVWR of more than 10,000 lbs. is a CMV. Any vehicle carrying a quantity of hazmat which requires placards to be displayed as per CFR49 is a CMV, regardless of weight. Same with buses designed to transport more than 15 persons (including the driver).
The weight of the load isn't so much what's important as the Gross Vehicle Weight Rating of the vehicle transporting it. The GVWR is the weight that vehicle is rated to be at when fully loaded - if the vehicle weighs 18,000 lbs. with the load it has, but has a GVWR (or Gross Combined Weight Rating in the instance of vehicles with trailers) of more than 26,000 lbs., then it required a CDL, period, whether you're crossing state lines or operating intrastate. Now if the vehicle has a GVWR of less than 26,000 lbs, it won't require a CDL, but will require a DOT medical card.
It would require a CDL if:The Gross Vehicle Weight Rating is more than 26,000 lbs.It is carrying a quantity of hazardous materials which requires the display of placards, no matter what the GVWR is.It is a bus designed to transport more than 15 persons (including the driver), no matter what the GVWR is.