(a) At any time during a registration year, the owner of a vehicle registered in one of the classes listed in subsection (b) of this section may apply to the Administration for a transfer of the registration for that vehicle to any other permissible registration that is in the same class and has a higher registration fee, whether the transfer is for the same vehicle or is to another vehicle owned by the same person.
(b) A transfer of registration under this section may be made only within the following classes:
(1) Class E (trucks);
(2) Class F (tractors); and
(3) Class G (trailers).
(c) (1) For a new registration under this section, the registration fee is as provided in this subsection.
(2) If the new registration is issued on or before the last day of the sixth month of the registration year for that class of vehicle, the registration fee is the full registration fee ordinarily required for the new registration, with a credit for the other fee already paid.
(3) If the new registration is issued on or after the first day of the seventh month of the registration year for that class of vehicle, the registration fee is one half of the registration fee ordinarily required for the new registration, with a credit for so much of the other fee already paid as is allocable to the last six months of the registration year.
Structure Maryland Statutes
Title 13 - Vehicle Laws -- Certificates of Title and Registration of Vehicles
Subtitle 9 - Registration Classifications and Fees
Section 13-901 - When and to Whom Fees Payable
Section 13-902 - Administration to Determine Registration Classification
Section 13-904 - Proration of Registration Fee for Part of Registration Year
Section 13-905 - Postage Payments Not Allowed
Section 13-906 - Application Requirements Where Fee Based on Gross Weight
Section 13-907 - Transfer of Registration Within Certain Classes