Iowa Code § 554B.2
A security interest in rolling stock of a transmitting utility may be perfected either as provided in the Uniform Commercial Code, chapter 554, or as provided in the ICC Termination Act of 1995, 49 U.S.C. §701, 11301.
[C66, 71, 73, 75, 77, 79, 81, §555.2] C93, §554B.2 2010 Acts, ch 1061, §74