Yes in ANY country using another person's identity is a crime called FRAUD.
By yourself it is illegal. Just like your permit when you started driving a car you have to have a properly licensed driver with you.
Not illegal, but stupid.
Assuming you mean while operating a commercial vehicle - first, both you yourself and the supervising driver must be at least 21 to be allowed to operate a commercial vehicle across state lines.
.04
Commercial driver, trucker,
The driver of a commercial motor vehicle must stop within how many feet of railroad tracks?
Yes, provided you're in this country legally.
Yes they can.
NO!!
Drivers who do not have a valid driver's license from another state may face penalties such as fines, license suspension, and potential criminal charges for driving without a valid license. It is illegal to operate a motor vehicle without a valid driver's license in any state.
A person who operates a vehicle which requires the operator to possess a Commercial Drivers Licence.
0.04 same as if you were driving a commercial vehicle