Regarding Administrative Rules of the Iowa Department of Public Safety:
The Iowa Administrative Procedure Act, Chapter 17A of the Code of Iowa, provides for the promulgation of administrative rules by state agencies. Administrative rules amplify, clarify, and implement statutory language found in the Code of Iowa. Administrative rules carry the force of law, and are codified in the Iowa Administrative Code.Emphasis mine.
The Iowa Administrative Code is organized by issuing agency and each agency has an identifying number to uniquely label its rules. The Iowa Department of Public Safety's identifying number is 661. Consequently, Chapter 121 of the Department's administrative rules can be cited as "661 IAC Chapter 122."
As stated in the first document, the rules have not been released yet.