Colorado Department of Revenue
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Interlock FAQ

Q. What will an Ignition Interlock cost per year?
Q. What do I need to take to the Ignition Interlock vendor? (IMPORTANT)
Q. When is an Ignition Interlock required?
Q. Do I have to install an Ignition Interlock on all my cars?
Q. I had an alcohol violation that requires an Interlock as part of my reinstatement, what do I do now?
Q. Now that I have been reinstated with the Ignition Interlock device, how do I get my restricted license?
Q. My Ignition Interlock requirement has ended, what do I do now?
Q. How do I qualify for an unrestricted license after 4 compliant periods (1st Per Se only)?