Dear Brooklyn Truck Driver:
Federal law regulates the driving requirements for drivers of commercial vehicles intestate.
The legal age for driving a commercial vehicle in interstate commerce is 21.
If you drive only within New York State, the minimum legal age is 18.
You should have applied for this license before driving the truck.
See New York State DMV forms and rules at:
The answer provided to you is in the nature of general information. The general proposition being that you should try to avoid a bad outcome if you can.