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  • New Customers
    • RoadGuard’s Ignition Interlock Device
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    • What Is an Interlock?
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  • Locations
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  • Existing Customers
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Discover the RoadGuard Interlock blog and learn about ignition interlock devices, DUI laws, and get safe driving and responsible drinking tips.

Ignition Interlock Removal Process: What Happens at Your Final Appointment and How to Prepare

Learn how interlock removal works from eligibility to license restoration. See required paperwork, appointment steps, and tips to avoid extended restrictions.

How Fuel Cell Sensors Detect Alcohol: The Science Behind Your Ignition Interlock

Learn how a fuel cell breathalyzer uses platinum sensors to measure ethanol accurately. Discover why this technology improves reliability over cheap models.

The Dräger Interlock 7000 Feature Deep-Dive: A Driver’s Guide to RGI’s Flagship Device

Learn how the Draeger Interlock 7000 works, from 10‑second warmup to fuel cell accuracy, breath test steps, and options like camera and GPS in one guide.

Buying a Used Car With an Existing Ignition Interlock Installed

Planning to buy used car with an ignition interlock installed? Learn legal rules, who owns the IID, removal options, and how to handle your own requirement.

Ignition Interlock for Leased Vehicles: What to Know Before Signing

Learn how ignition interlock rules apply to leased cars. Review lease clauses, get lessor approval, and understand state requirements before installation.

Ignition Interlock Devices with Mobile App Integration: What Modern Tech Offers

Learn how an ignition interlock with a mobile app works, from breath tests to alerts and calibration reminders, to help you stay compliant and avoid violations.

Best Ignition Interlock for CDL Holders and Commercial Drivers

Learn how CDL ignition interlock rules affect DUI convictions, CDL disqualification, and work eligibility. Understand federal and state IID requirements.

Restarting Your Interlock Program After a Compliance Lapse

Facing an interlock restart after a lapse or DMV suspension? Learn what triggers a restart, typical costs, key contacts, and steps to regain compliance.

What to Do If You Lose Your Interlock Receipt, Contract, or Service Records

Lost interlock paperwork and facing court or DMV deadlines. Learn how to replace receipts, compliance reports, and service logs with clear steps and templates.

What to Do If Your Interlock Stops Communicating with the Monitoring Server

Interlock not communicating with the server? Learn common causes, safe DIY troubleshooting steps, and when to call your provider to protect compliance records.

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