This bill amends Iowa's Code section 321J.20 to establish penalties for noncompliance with ignition interlock device (IID) requirements. It introduces a new simple misdemeanor offense for individuals required to install an IID who operate a motor vehicle without an approved IID installed. The bill specifies that if a person commits this offense, their temporary restricted license (TRL) will be revoked by the Department of Transportation (DOT). Additionally, the bill clarifies that the DOT must revoke a person's TRL if they tamper with, remove without authorization, or circumvent an IID, which is classified as a serious misdemeanor.

The amendments include the deletion of previous language regarding the revocation of a person's TRL and the insertion of new language that explicitly states the consequences for operating a vehicle without an IID or tampering with the device. The penalties for these offenses include confinement for up to 30 days and fines ranging from $105 to $855. Overall, the bill aims to strengthen enforcement of IID requirements and ensure compliance among individuals with revoked licenses due to operating while intoxicated.