The same as for any other vehicle. There's a common misconception that firearms are prohibited in CMVs under federal law - this is an outright lie. There is nothing in the United States Code or the Federal Motor Carrier Safety Regulations prohibiting you from keeping a firearm in a commercial vehicle.
Please see the link at the bottom of this page for a summary of Texas gun laws.
No
This one will cover all 50 states regarding a gun in a commercial vehicle ....it is not allowed. ====== False - there is NOTHING in the FMCSR addressing firearms in a commercial vehicle. The laws of transporting firearms in a CMV are going to be the same as any other vehicle, and these laws will vary from state-to-state. If you're in MD, it's not a very gun-friendly state, and they do not recognise out-of-state concealed carry permits, so you won't be permitted to carry it concealed in the cab.
No, it is not against the law, while carrying your gun in the state of Texas, you should conceal it.
No. A commercial vehicle is defined as a motor vehicle used for public transportation or cargo transportation. Generally, A vehicle is designated "commercial" when it is titled or registered to a company. A taxi cab is a commercial vehicle. A police car is not.
You're required to have a current medical card on your person at all time when you're driving a vehicle which requires a CDL. In any state. That's federal law.
Depends on Texas law.
No. Mandatory auto insurance is a state law in Texas.
State law may allow gun and ammo possesion for convicted felons, but Federal law does not.
Not unless you are law enforcement.
You will need to read the Texas law to get a correct answer.
What is the Texas law for returning a new vehicle just purchased and found out you want to return it.