Iowa Code § 321.343A: Employer violations — penalty.

An employer shall not knowingly allow, require, permit, or authorize a driver to operate a commercial motor vehicle in violation of section 321.341 or 321.343 or any other federal or local law or regulation pertaining to railroad grade crossings. An employer who violates this section shall be subject to a fine in an amount in accordance with the civil penalty provided in 49 C.F.R. pt. 386, Appendix B(b)(3).