SDCL § 32-5-44: Plates without yearly designation--Distinctive color--Yearly renewal dispensed with.

The department shall issue to motor vehicles, owned by public corporations listed in § 32-5-42 or school buses owned by individuals who contract with public school corporations and use the vehicles solely for the purpose of transporting school students and school employees, license plates which may be used on the motor vehicles for more than one year. The department shall design and adopt a special license plate for this purpose, with the plates bearing no yearly designation, and which are of a distinctive color, and may not be duplicated by the regular license plate issues required by §§ 32-5-82 to 32-5-89, inclusive. No yearly renewal of the registrations is required for such motor vehicles unless directed by the department.