Maryland Code, Criminal Procedure § 12-205

(2)(i) an innocent registered owner lends the motor vehicle to another person; and

(ii) that person, or someone invited into the motor vehicle by that person, brings a controlled dangerous substance or paraphernalia into the motor vehicle without the registered owner's knowledge; or

(3)(i) a member of the family other than the registered owner uses the motor vehicle, and a controlled dangerous substance or paraphernalia is in the motor vehicle in an amount insufficient to suggest a sale is contemplated;

(ii) a sale was not made or attempted; and

(iii) the registered owner did not know that the controlled dangerous substance or paraphernalia was in the motor vehicle.