Section 5103 Of Article 8.5. Environmental License Plates From California Vehicle Code >> Division 3. >> Chapter 1. >> Article 8.5.

. "Environmental license plates," as used in this article, means license plates or permanent trailer identification plates that have displayed upon them the registration number assigned to the passenger vehicle, commercial motor vehicle, motorcycle, trailer, or semitrailer for which a registration number was issued in a combination of letters or numbers, or both, requested by the owner or lessee of the vehicle.