Q: I have a tint medical exemption, can i get a license plate that states that or an official decal 2 avoid cop pull overs?

A: Petition the MVA to adopt a regulation that allows the MVA to create and issue a decal you can affix to the exterior of the car notifying the law enforcement that the vehicle owner has a certified medical waiver for tinted windows. It would have to have an expiration date corresponding to the waiver, which is limited to two years per waiver period. Other than that, you could try to create your own decal or sign asserting that your vehicle has such a waiver in the possession of the driver, and hope the officer both sees it and believes it. There's no magic bullet that's going to solve your problem. When something is visibly illegal, but a few random people are exempt from compliance with the law that makes it illegal, there are few practical solutions. Handicap placards and plates were invented to immediately allow officers to ascertain whether a vehicle is legally parked in a handicap space; registration stickers show dates of expiration to immediately indicate whether a vehicle has current registration. It would seem a similar sticker or decal would suffice in your circumstances, but none has ever been thought of or invented. Make the argument that in the absence of such an officially issued tint-waiver sticker, you are being discriminated against based on your medical disability by constantly being subjected to police detention. Here's a link regarding citizen participation in petitioning for new regulations: https://sra.maryland.gov/pod/citizen-participation-regulation-making-process

Good luck.