SDCL § 32-6B-28: Time for application for registration by owner--Inspection of documents by law enforcement officer.

The owner of a vehicle described in § 32-6B-26, shall within forty-five days after the date of purchase, apply to the county treasurer of the owner's county of residence for registration and shall possess a bill of sale, or duplicate thereof, or a properly assigned registration card, which is subject at all times to inspection by a law enforcement officer.