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  • New Customers
    • RoadGuard’s Ignition Interlock Device
    • DUI Laws by State
    • What Is an Interlock?
    • Schedule Interlock Installation
    • State License Reinstatement
    • Ignition Interlock for Hearing Impaired or Deaf Drivers
    • Ignition Interlock Device Cost
    • Why RoadGuard Interlock?
    • About Us
    • Find a Location Near You
  • Existing Customers
    • Contact Customer Support
    • All Support Topics
    • Frequently Asked Questions
    • Incident Report Form
    • Interlock Removal
    • Mechanic Repair Bypass
    • Pre-payment Dispute
    • Refer a Friend
  • Partners
    • Monitoring Authorities
    • MonitoringAuthority.com
    • D-Safe Login
    • Attorney Program
    • Become Interlock Provider

Discover the RoadGuard Interlock blog and learn about ignition interlock devices, DUI laws, and get safe driving and responsible drinking tips.

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.

What Your Interlock Warranty Actually Covers (and Doesn’t)

Ignition interlock warranty explained. Learn what coverage includes, what it excludes, and how it affects your vehicle warranty, dealer repairs, and rights.

Talking to Your Family About Your DUI: A Plain-Language Guide

Talking to family DUI can feel overwhelming. Learn how to prepare, share the facts, use clear scripts, and handle reactions while taking responsibility.

How to Get an Official Interlock Compliance Letter for Court

Learn what an interlock compliance letter is, when courts require it, and how to request one from your IID vendor so your hearing and license reinstatement.

What Happens if Your Vehicle Fails Interlock Installation?

Interlock installation failed? Here’s why vehicles get rejected, what gets reported to the state, and how to get back on the road quickly.

What Causes Interlock Device False Readings

IID false readings happen even when you haven’t been drinking. Here’s the science of what triggers them and what to do when the device fails you.

Traveling Internationally While on an Interlock Program

Traveling internationally with interlock device questions answered: program rules, what to bring, calibration scheduling, and country-specific notes.

Transferring Your Interlock to a New Car: The Complete Guide

Transfer interlock device guide: how to move your IID to a new car, what paperwork to file with provider and state, and how to avoid a violation.

Reading Your Interlock Compliance Report: What Your PO Sees

Interlock compliance report explained: what your probation officer sees, what gets flagged, and how to actually read your monthly device log.

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