You cannot operate a CMV with marijuana in your system, even with a prescription. While some states have chosen to allow medical marijuana, it's still illegal under federal law. Likewise, commercial vehicles are governed by federal law - the Federal Motor Carrier Safety Regulations - even if operated in only an intrastate capacity.
I talk Cymbalta and gabapine
Yes.
No
You get arrested if you get caught possessing marijuana in any state of the U.S. Whether you lose your drivers license or not depends on your penalty, and usually your drivers license isn't affected by an arrest.
Yes
No.
Yes
yes
A valid drivers license and a DOT medical card.
Commercial Drivers Licence, Restricted Drivers Licence
To get a commercial drivers license, unfortunately for you, you must be 21 years old. It seems you have a while to wait, but maybe you can work on a career plan while you are waiting.
A commercial drivers license is a drivers license to drive vehicles which have a vehicle weight rating of 26,001 lb or more for commercial use, or transports quantities of hazardous materials. It is also required for vehicles that are designed to transport 16 or more passengers, including the driver You can locate more information regarding a CDL (commercial drivers license) at www.fmcsa.dot.gov/registration-licensing/cdl/cdl.htm.