Pennsylvania Ignition Interlock Limited License (IILL) Guide: Eligibility and Vendor Costs
Under 75 Pa.C.S. § 1556, drivers suspended for a DUI can apply for an Ignition Interlock Limited License (IILL). You must file Form DL-9108, Pennsylvania, PennDOT, Ignition Interlock Limited License Petition and pay an $85.00 fee, plus lease an approved breathalyzer device which costs around $80 to $120 per month.
A Driving Under the Influence (DUI) conviction in Pennsylvania almost always results in a mandatory license suspension. In the past, drivers were forced to wait out the entire suspension without any ability to drive legally. Thanks to legislative reforms codified under 75 Pa.C.S. § 1556, many DUI offenders are now eligible to keep driving by obtaining an Ignition Interlock Limited License (IILL). This program allows you to drive 24/7 for any reason, provided the vehicle is equipped with a breathalyzer device that prevents the engine from starting if alcohol is detected. Navigating the paperwork and vendor requirements can be tricky, but you can find a dedicated Pennsylvania DUI or traffic attorney in our directory to help guide you through the process.
Step-by-Step IILL Process in Pennsylvania
The IILL program is governed by 75 Pa.C.S. § 1556. Unlike the Occupational Limited License (OLL), the IILL does not restrict where or when you can drive. You just cannot drive a car without the interlock device.
Filing the Petition
Before submitting your petition, you must first have an approved vendor install the ignition interlock device on your vehicle. The vendor completes the installation verification in Section D of Form DL-9108SC, Pennsylvania, PennDOT, Self-Certification of Vehicle(s) to Be Operated. You then submit that completed certification along with Form DL-9108, Pennsylvania, PennDOT, Ignition Interlock Limited License Petition to the Pennsylvania Department of Transportation, Harrisburg. Along with these forms, you must send a non-refundable $85.00 petition fee, proof of insurance, and surrender your current suspended physical driver's license if you have not done so already. Within approximately 20 days of receiving your completed packet, PennDOT will process the petition and mail you an eligibility determination.
The Employer Exemption for Company Vehicles
One of the biggest concerns for DUI offenders is keeping a job that requires driving a company vehicle. Pennsylvania law provides a crucial exception under 75 Pa.C.S. § 1556(k). If you are required to drive a vehicle owned by your employer during the course of your job, your employer can complete and notarize Form DL-3805, Pennsylvania, PennDOT, Ignition Interlock Employment Exemption Affidavit. Crucially, this form is not submitted to PennDOT for prior approval; instead, you must keep the original notarized affidavit in the vehicle at all times to present to law enforcement upon request. However, there are strict limits: you cannot use the company car for personal errands, you cannot be the owner or part-owner of the company, and this exemption does not apply to commercial vehicles requiring a CDL.
Shared Family Cars and Interlock Requirements
If you share a single vehicle with your spouse or children, obtaining an IILL will impact the entire household. The law requires the ignition interlock device to be installed on any vehicle you intend to drive. When family members drive that car, they must also blow into the device to start it and perform the random 'rolling retests' while driving. Before paying a vendor to install the device, it is critical to train all household members on how to use it safely, as a failed breath test by a family member could mistakenly be recorded on your log and reported to PennDOT.
Hidden Costs of Monthly Vendor Leases
PennDOT does not install these devices; you must lease the equipment from a private, state-approved vendor. The financial burden of the IILL program is placed entirely on the driver. Typically, vendors charge an initial installation fee of $100 to $200. You are then locked into a monthly lease and recalibration fee ranging from $80 to $120 per month. If you lock out the device (by failing a breath test or missing a recalibration appointment), the vendor will charge a reset fee, usually around $50 to $75. Over a one-year suspension, the total cost of the ignition interlock program easily exceeds $1,200.
Violations and the Courts
Attempting to cheat the system is a serious crime. Under Pennsylvania law, if you are caught driving a non-interlock vehicle without a valid exemption, or if you ask a sober friend to blow into the machine for you to start the car, your IILL will be immediately revoked. Furthermore, tampering with the device carries additional criminal charges under 75 Pa.C.S. § 3808. Courts consistently enforce these restrictions, as seen in precedents like Commonwealth v. Peralta, 311 A.3d 1 (PA Superior Court 2024), which addressed the notice and evidentiary requirements necessary to sustain a conviction for illegally operating a motor vehicle without an interlock system.
Frequently Asked Questions (FAQ)
Am I eligible for an IILL if this is my first DUI?
Yes. Under 75 Pa.C.S. § 1556, first-time DUI offenders in Pennsylvania are generally eligible for the IILL immediately, rather than waiting out a hard suspension period.
What happens if I use mouthwash before blowing into the device?
Ignition interlock devices are highly sensitive and will detect alcohol in mouthwash or certain medications, resulting in a failed start. You should always rinse your mouth with water and wait 15 minutes before testing.
Can PennDOT waive the vendor fees if I am low-income?
No. PennDOT does not waive or subsidize private vendor fees. However, under 75 Pa.C.S. § 3805(e) and 67 Pa. Code § 88.102, drivers with household incomes below 200% of the federal poverty guidelines may qualify for an economic hardship exemption allowing installation on only one vehicle rather than every owned vehicle. All vendor installation, lease, and calibration fees for that vehicle must still be paid in full by the driver.
Do I have to install the device on every car I own?
No. You only need to install the interlock device on the specific vehicle(s) you actually intend to drive. However, you are strictly prohibited from driving any of your other unequipped vehicles.
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