If you’ve been charged with or convicted of a DUI in Maryland, chances are you’ve heard about the Ignition Interlock Program. But what exactly is it, who has to use it, and how long does it last? Whether you’re facing a first-time DUI or a repeat offense in Charles, Prince George’s, Calvert, or St. Mary’s County, understanding the ignition interlock requirement is key to protecting your license and freedom.
What Is the Ignition Interlock Device?
An ignition interlock device (IID) is a breathalyzer installed in your vehicle that prevents the engine from starting if it detects alcohol on your breath. It’s a tool designed to stop impaired driving before it begins. In Maryland, the Motor Vehicle Administration (MVA) oversees the ignition interlock program.
When the device is installed, you must blow into it before starting your vehicle and at random intervals while driving. If alcohol is detected, the vehicle will not start—or may prompt you to pull over if you’re already on the road.
When Is the Ignition Interlock Required in Maryland?
Ignition interlock use is mandatory in several DUI-related situations, including:
- First-time DUI with a BAC of 0.15% or higher
- Refusal to take a breathalyzer test (under Maryland’s implied consent law)
- Second or subsequent DUI or DWI convictions
- As a condition of probation or restricted license to avoid suspension
You can also voluntarily opt in to the ignition interlock program to avoid license suspension after certain DUI arrests.
How Long Will You Have to Use It?
The duration of the ignition interlock requirement depends on the offense:
- 6 months for first-time offenders
- 1 year for second-time offenders
- 3 years for third or subsequent offenses
- 1 year if you refused the breathalyzer test
Missed tests, failed breath samples, or attempts to tamper with the device can result in program extensions or removal.
Consequences of Non-Compliance
If you are ordered to participate in the program and fail to do so—or if you are removed for violations—you may face:
- Revocation of driving privileges
- License suspension or extension
- Jail time, if part of a probation condition
- Additional charges or penalties under DUI laws
It’s critical to follow all program rules and maintain the device properly. Missed service appointments or tampering can be reported to the court or MVA.
Ignition Interlock for Work Vehicles
In some cases, Maryland law allows drivers to request an exemption for employer-owned vehicles used solely for work. However, this does not apply to self-employed individuals or anyone who drives a company vehicle for personal use.
If you need this exemption, you must file documentation with the MVA and have your employer’s written consent.
Can You Drive Without an IID?
If you’re eligible for the ignition interlock program, failing to enroll means your license will be suspended or revoked. You cannot legally drive during that suspension period unless you enroll and install the IID. Some drivers attempt to wait out the suspension without driving, but this does not reset the clock—the time only runs while you’re actively participating in the program.
How a Southern Maryland DUI Lawyer Can Help
The ignition interlock requirement can be confusing and stressful, especially if you’re dealing with a DUI arrest for the first time. An experienced Southern Maryland criminal defense lawyer can:
- Help you challenge the DUI charge or breath test results
- Request a Maryland MVA hearing to delay or avoid suspension
- Guide you through the interlock enrollment process
- Negotiate probation terms to minimize inconvenience
At Southern Maryland Criminal Defense, we represent clients in Charles, Calvert, St. Mary’s, and Prince George’s Counties. If you’re facing ignition interlock after a DUI arrest, you don’t have to navigate it alone.
Facing a DUI charge in Southern Maryland? Call Southern Maryland Criminal Defense today for a free consultation and start protecting your rights and your license.
