There is no number of axles specified - it's based on weight limits. Licence classification varies between states. A Class C licence could be a Class C CDL or, if the state retains the Class C designation for non-CDL licences (most states are doing away with the non-commercial Class C), then it would normally be used for exempt vehicles (motor homes, registered farm vehicles), regular passenger vehicles, and commercial vehicles of 26,000 lbs. GVWR or less which aren't transporting hazardous materials or designed to transport more than 15 passengers (including the driver). A Class C CDL would be used for vehicles under 26,001 lbs. GVWR which are either used for transporting quantities of hazardous materials which require placards to be displayed, or buses designed to transport more than 15 persons (including the driver).
For a single axle, it depends what it's registered as. If it's registered as a vehicle with a 26,000 Gross Vehicle Weight Rating or less, your regular Class C, Class D, whatever licence your state requires for you to operate an ordinary passenger car is all you need. Tandem axle trucks and single axle trucks rated at more than 26,000 lbs. GVWR require a Class B CDL.Also, not all of them are built on chassis which makes them a highway vehicle - e.g., the Elgin Pelican sweepers are considered off-highway equipment, the same as a forklift, front end loader, etc., and do not require any upgraded license to be operated.
Commercial drivers licenses are regulated and issued by individual states. The requirements vary slightly from state to state. For example. in California a Class C license lets you drive any two axle vehicle up to 26,000 GVWR (gross vehicle weight rating), a 3 axle vehicle up to 6,000, a housecar up to 40 feet. You must check the motor vehicle regulations in the state you are planning to obtain a license.
It is a standard license. You may drive a 2 axle vehicle with a gross weight rating up to 26,000 lbs. , a 3 axle vehicle weighing 6,000 lbs. or less, a recreational vehicle up to 40 feet, a 3 wheel motorcycle, or a vanpool with 10-15 persons including the driver.
A Class 8 truck is a vehicle with a Gross Vehicle Weight Rating of over 33,000 lbs. Single axle trucks with an additional lift axle, tandem axle trucks, tandem axle trucks with additional lift axles, and tractor-trailer dumps are all Class 8 trucks.
Whoever answered this question is WRONG. If you are talking a "single axle" (One steering axle and one drive axle with 2 tires on the steering axle and 4 on the drive axle) you do not need any special license
Truck classification isn't concurrent with the license required to drive them. A single axle water truck could be a Class 5, 6, 7, or 8 truck, depending on the vehicle GVWR. A Class 7 or Class 8 truck would require a (minimum) Class B CDL.
How many axles you can druve. Most people can drive a 2 axle vehicle.
You're making up laws and asking about them. Typically, the max gross vehicle combination weight permitted for interstate travel is 80,000 lbs. A single axle tractor pulling a set of doubles can do this.. in states which permit triples, it can have an even higher gross vehicle weight rating. It also depends on your class of licence. If you have a regular Class C or D (depending on the state issuing it), you can operate any combination of vehicles up to 26,000 lbs. Gross Vehicle Weight Rating. With a Class B CDL, you can operate a combination of over 26,000 lbs. GVWR, so long as the vehicle in tow is rated at and is weighing less than 10,000 lbs. And a Class A CDL is required for combinations rated over 26,000 lbs. GVWR when the vehicle in tow is rated at over 10,000 lbs. So long as the total weight rating of the combination is within the range specified by the class of licence you possess, and you're compliant with axle weight laws, you're good to go, generally.
Assuming you mean a tandem axle truck, that would be a Class B CDL with tanker endorsement.
That depends on exactly what you're driving. A pickup truck with a snowplow mounted on the front doesn't require a CDL. A single axle dump truck weighing under 26,000 lbs doesn't, either. The moment that vehicle weighs over 26,000 lbs., or if you're driving a tandem/tri-axle/quad axle/etc. dump truck with a plow, then you need a Class B CDL. If, at any point, you're driving a combination (of truck and trailer) with a Gross Vehicle Weight Rating of over 26,000 lbs, and the vehicle in tow is rated at over 10,000 lbs, then you need a Class A CDL.
If the gross vehicle weight rating of the vehicle or combination is over 26,000 lbs, and the vehicle isn't exempted from CDL requirements (farm use vehicle, fire fighting apparatus, recreational vehicle, etc) then yes.
Not if it has a Gross Vehicle Weight Rating of 26,000 lbs. or less.