Maryland Transportation Section 23-302

      (a)      (1)      Except as provided in paragraph (2) of this subsection, an owner of a vehicle shall have the vehicle inspected, maintained, and repaired at least every 25,000 miles or at least every 12 months, whichever occurs first.

            (2)      An owner of a vehicle registered under § 13-919 of this article that has been in operation for at least 18 years from the vehicle's model year or first registration date, whichever is later, shall have the vehicle inspected, maintained, and repaired at least every 12,500 miles or at least every 6 months, whichever occurs first.

      (b)      A vehicle shall meet or exceed the standards and requirements set under the regulations adopted under this subtitle.

      (c)      A vehicle may not be operated unless at all times it is appropriately registered and the owner is in compliance with this section.