# How Does Colorado Define Drunk Driving? | Heuser & Heuser, LLP

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Colorado law considers any driver impaired if they have a **blood alcohol concentration (BAC)** of 0.08% or higher.

The impaired BAC level in Colorado for **drivers under 21** and **commercial drivers** are even lower:

- Drivers under 21 are impaired in Colorado with a BAC of 0.02% or more.
- Commercial drivers are considered impaired in Colorado with a BAC of 0.04% or more

If you believe a driver involved in your auto accident may have been impaired by alcohol or drugs, [contact the attorneys at Heuser & Heuser, LLP](https://heuserlaw.com/contact-us/) to **schedule a free consultation**. We can investigate to seek evidence that may support a drunk driving accident claim.

[Call or text (719) 520-9909](tel:+17195209909) or [complete a Free Case Evaluation form](/contact-us/)

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Source: https://heuserlaw.com/faqs/how-does-colorado-define-drunk-driving/