Okla. Stat. tit. 47, § 47-428: License - Issuance - Contents - Carried in vehicle -

License plate.

Upon the approval and issuance of the application and upon

compliance with the terms of this act, the Commission shall issue to

the applicant a license as an itinerant merchant. Such license

shall be numbered, shall show the amount of fees paid, shall,

specifically describe the itinerant merchant and the motor vehicle

as they are described in the application, and shall at all times be

carried in the cab of the motor vehicle described and shall at all

times be subject to inspection by any person authorized to enforce

this act. The Commission shall also issue to the itinerant merchant

a license plate containing the same number as the license, of

distinctive color and size, which shall at all times be displayed on

the rear of the motor vehicle described in the license.