Upon application therefor, the Commissioner shall register and issue permanent license plates without year or month decals for display on any (i) firefighting truck, trailer, and semitrailer on which firefighting apparatus is permanently attached when any such vehicle is owned or under exclusive control of a volunteer fire department; (ii) emergency medical services vehicle or other vehicle owned or used exclusively by a volunteer fire department or volunteer emergency medical services agency if any such vehicle is used exclusively as an emergency medical services vehicle and is not rented, leased, or lent to any private individual, firm, or corporation, and no charge is made by the organization for the use of the vehicle; or (iii) emergency medical services vehicle owned or under exclusive control of a commercial or privately owned emergency medical services agency, as defined in § 32.1-111.1, if any such vehicle is not rented, leased, or lent to any private individual, firm, or corporation that is not another emergency medical services agency. The equipment shall be painted a distinguishing color and conspicuously display in letters and figures not less than three inches in height the identity of the emergency medical services agency, volunteer fire department, or volunteer emergency medical services agency having control of its operation. No fee shall be charged for any vehicle registration or license plate issuance under clause (i) or (ii). The fees charged for vehicle registration under clause (iii) shall be as provided in § 46.2-694.