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.
A Class D license permits a person to drive any single vehicle, provisionally, with weight restrictions. For example any vehicle not exceeding 26,000 pounds is allowed to be driven.
Anyone with a proper drivers license may operate the vehicle the license is for regardless of the number of passengers the vehicle may carry. For example a standard Class F license permits the holder to operate any light truck, passenger van, or passenger car, regardless of the passengers present in those vehicles.
A class a cdl license allows someone to drive a heavy vehicle with a gross vehicle weight (GVW) of 26,000 or more pounds. Example: 18 Wheeler
An International Driving License (IDL) is an identity document which permits its holder to drive a personal motor vehicle in any other country that recognizes the IDL.
You can't drive any class of vehicle that way. If you don't have the licence, or else a permit and an appropriately licenced driver with you, you can't drive it.
Whether a vehicle has air, hydraulic, or air-over-hydraulic brakes has zero determination on the class of license required to operate it.
No, a passport cannot be used as a driver's license. A passport is a travel document used for international travel and identification, while a driver's license is a document that permits individuals to drive a motor vehicle legally.
Sixteen with permits, eighteen with drivers license.
You can drive an electric bicycle without a license.
If you don't have a CDL, you can't operate a commercial vehicle. You can't even so much as be in actual physical control of the vehicle (in the driver's seat with the motor running). Even if you possess a non-CDL Class A or B licence, this holds true - a non-CDL Class A/B only permits you to operate vehicles which fall under the exemptions for CDL requirements.
A license, a vehicle, and insurance.
Yes, a driver's license is required to legally drive a vehicle on public roads.