Re: Carrying a Handgun in a vehicle in Maryland
That is correct under Federal Law..
Transporting Firearms in Maryland
Can I legally transport firearms interstate? MD State Police
Yes, under Title 18, Section 926A, of the United States Code, a person who is not prohibited from possessing, transporting, shipping, or receiving a firearm shall be entitled to transport a firearm for any lawful purpose from any place where he may lawfully possess and carry such firearm to any place where he may lawfully possess and carry such firearm if, during such transportation the firearm is unloaded, neither the firearm nor any ammunition being transported is readily accessible or is directly accessible from the passenger compartment. In the case the vehicle does not have a compartment separate from the driver's compartment the firearm or ammunition shall be contained in a locked compartment other than the glove compartment or console.
You have to distinguish the difference between "Carrying" and "Transporting"