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HF 2423 – Ignition Interlock Devices (LSB5491HV)
Staff Contact: Garry Martin (515.281.4611) garry.martin@legis.iowa.gov
Fiscal Note Version – New
Description
House File 2423 requires the installation of an ignition interlock device (IID) on every vehicle
operated by a person whose driver’s license is revoked for operating while intoxicated (OWI)
prior to the issuance of a temporary restricted license (TRL). This requirement applies
regardless of whether or not the person has had previous convictions or revocations under Iowa
Code chapter 321J.
The Bill also provides that as a condition of reinstatement of a driver’s license other than a TRL
to a person whose driver’s license was revoked for OWI, the person must maintain an IID for
180 days if the person has no previous revocation under Iowa Code chapter 321J. This time
period will be reduced by any time the person operated a vehicle with an IID with a TRL.
The Bill makes the following changes:
• Establishes the alcohol concentration beyond which an IID will not allow the operation of the
motor vehicle at 0.04.
• Establishes compliance-based removal provisions that may extend the period of time a
person is required to maintain an IID for multiple violations in a certain time period. The Bill
establishes reporting requirements for IID providers.
• Amends an existing penalty for circumventing or tampering with an IID to include the
removal of an IID. The penalty for this act is a serious misdemeanor.
• Requires the Department of Transportation (DOT) to establish procedures by administrative
rule to waive IID requirements under Iowa Code chapter 321J for individuals with a verifiable
medical condition.
• Prohibits an IID provider from imposing an early termination fee.
The Bill takes effect January 1, 2025, and is applicable to license revocations that occur after
the effective date.
Background
Currently, a person whose driver’s license is revoked for operating while intoxicated is
required to install an IID before being issued a TRL by the DOT. The IID must be installed on
every vehicle owned or operated by the person, or every vehicle operated by the person if the
person has had no previous conviction or revocation under Iowa Code chapter 321J.
The Department of Public Safety establishes by administrative rule the level of alcohol
concentration beyond which an IID will not allow the operation of the motor vehicle. The current
level is 0.025 under 661 IAC 158.6.
Currently, a person with a second or subsequent driver’s license revocation for OWI is required
to install an IID for a minimum of one year after reinstatement of a full driver’s license (not a
TRL). The one-year period will be reduced by any time a person had an IID installed on the
Person’s vehicle while operating with a TRL.
Fiscal Note
Fiscal Services Division 2
Under current law, a person found guilty of violating Iowa Code chapter 321J commits a serious
misdemeanor, which can result in a period of imprisonment in county jail of at least 48 hours but
not more than one year and a fine of at least $430 but not more than $2,560. The person’s
driver’s license is revoked for a period of 180 days unless the person is issued a TRL.
In FY 2023, there were five convictions under Iowa Code sections 321J.4(8)(f) and 321J.20(7)
and for tampering with or circumventing an IID, two convictions for failure to install 321J.4(8)(e),
and 74 convictions under Iowa Code section 321J.4(8)(c) for operating a vehicle without
installing an IID.
Assumptions
• The following will not change over the projection period: charge, conviction, and sentencing
patterns and trends; prisoner length of stay (LOS); revocation rates; plea bargaining; and
other criminal justice system policies and practices.
• A delay of six months is assumed from the effective date of this Bill to the date of first entry
of affected offenders into the correctional system.
• Marginal costs for county jails cannot be estimated due to a lack of data. For purposes of
this analysis, the marginal cost for county jails is assumed to be $50 per day.
Correctional Impact
Since House File 2423 amends an existing serious misdemeanor, it is unknown how many
additional convictions would occur. As a result, the correctional impact of the Bill cannot be
determined due to a lack of data. Figure 1 provides estimates for sentencing to State prison,
parole, probation, or Community-Based Corrections (CBC) residential facilities; LOS under
those supervisions; and supervision marginal costs per day for all serious misdemeanor
convictions. Refer to the Legislative Services Agency (LSA) memo addressed to the General
Assembly, Cost Estimates Used for Correctional Impact Statements, dated January 16, 2024,
for information related to the correctional system.
Figure 1 — Sentencing Estimate and Length of Stay (LOS)
Minority Impact
The minority impact cannot be determined due to a lack of data. Refer to the LSA memo
addressed to the General Assembly, Minority Impact Statement, dated January 16, 2024, for
information related to minorities in the criminal justice system.
Fiscal Impact
The fiscal impact cannot be estimated due to a lack of data. The penalty for a serious
misdemeanor is an average State cost of a minimum of $400 and a maximum of $6,859. The
estimated cost to the State General Fund includes operating costs incurred by the Judicial
Branch, the Indigent Defense Fund, and the Department of Corrections (DOC). The cost would
be incurred across multiple fiscal years for prison and parole supervision. In addition, the DOT
estimates one-time information technology programming costs of approximately $20,000
resulting from the Bill.
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Sources
Criminal and Juvenile Justice Planning, Department of Management
Department of Transportation
/s/ Jennifer Acton
February 16, 2024
Doc ID 1446138
The fiscal note for this Bill was prepared pursuant to Joint Rule 17 and the Iowa Code. Data used in
developing this fiscal note is available from the Fiscal Services Division of the Legislative Services
Agency upon request.
www.legis.iowa.gov