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Interlock BAC Limits for Colorado Drivers

The Colorado Department of Transportation (CDOT) has set a goal of installing interlock devices in as many vehicles as possible.

What Are Ignition Interlocks?

Ignition interlock devices prevent drunk driving by requiring a driver to blow into a breathalyzer before starting the car. If the test results show that the driver's blood alcohol level exceeds the legal limit, the car won't start.

Why Should I Install One?

An ignition interlock device is a small box installed inside the vehicle that requires a driver to blow into it before the engine will turn on. This prevents people with high levels of alcohol in their system from getting behind the wheel.

How Do They Work?

Ignition interlocks work by monitoring the breath alcohol level of the driver. If the driver blows into the device above a certain threshold, the car won't start.

How Much Does Installation Cost?

Ignition interlock devices cost between $1,000 and $3,500. However, if you lease them they are approximately $100 a month.

Can I Still Drive Anywhere While My Device Is Installed?

If you have been convicted of DUI/DWI, you will need to install an ignition interlocking device (also known as an 'ignition interlock system') on your vehicle. This device prevents your car from starting unless you blow into it first. You must also complete an alcohol education and therapy program before being able to drive again.

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