Alcohol and Impaired Driving

As part of this year’s The Heat Is On campaign, CDOT has again partnered with BACtrack, a leading personal and professional breathalyzer company, to urge Coloradans to check their blood-alcohol content (BAC) to confirm they are sober before they drive. Through the partnership, breathalyzers will be offered at a 20% discount for Colorado residents through November 30, or while supplies last.

Nearly 60 people in Colorado are arrested for impaired driving each day. To help reduce alcohol-related crashes and save lives in Colorado, CDOT and BACtrack have teamed for an unprecedented partnership to promote the use of smartphone breathalyzers. Alcohol affects everyone differently and your blood-alcohol content (BAC) can be affected by a variety of factors. A breathalyzer is the best way to get an accurate BAC reading. Even one or two drinks can put you over the DWAI or DUI limit. Don't risk it; know your BAC is zero before you decide to drive.

The BACtrack Mobile Pro, BACtrack C8 and BACtrack Trace are police-grade breathalyzers that provide users an accurate estimate of their BAC. The BACtrack Mobile Pro and BACtrack C8can also estimate when your BAC will return to zero from the BACtrack app, providing valuable information when drinking.

Whether you're a yogi who enjoys a glass of wine between classes, a craft beer fanatic who relishes a cold beer or a weekend brunch enthusiast who can't resist a mimosa, smartphone breathalyzers can keep all Coloradans safe. CDOT's partnership with BACtrack makes breathalyzers more accessible than ever to Coloradans.

View Breathalyzer Research Report



Foundation for Advancing Alcohol Responsibility

This program is also supported by the Foundation for Advancing Alcohol Responsibility. The Foundation brings more than 25 years of leadership in the fight against drunken driving and underage drinking.

Check out's Virtual Bar, which uses the latest science to help provide a better understanding of how different factors affect your BAC on an individual level.


Virtual Bar
  • Even after only one or two drinks, some people may be close to or exceed Colorado’s DUI and DWAI limits.
    • 05 Percent BAC for DWAI (Driving While Ability Impaired)
    • 08 Percent BAC for DUI (Driving Under the Influence)
  • Even if your BAC is less than 0.05 percent, you can still be arrested for a DUI if an officer notices signs of impairment. The only absolute way to ensure you are safe to drive is to have a BAC of zero.
  • When considering fines, legal fees and increased insurance costs, a DUI can add up to more than $13,500.

BAC Factors

  • When calculating your BAC, you may find your level of impairment increases or decreases based on these factors:
    • Number of standard drinks
    • How quickly you drink
    • Gender
    • Body weight
    • How much food you’ve eaten
    • Body type
    • Fatigue
    • Hydration


The Heat Is On is Colorado's high-visibility enforcement campaign that combines increased DUI enforcement with a strong public awareness campaign during 12 enforcement periods throughout the year. CDOT provides grants to law enforcement agencies statewide to conduct overtime DUI enforcement using state and federal funding. CDOT's Public Relations Office uses federal funds for media relations, advertising and community outreach.

CDOT's Office of Transportation Safety also provides federal grants for other impaired driving programs, including DUI courts, a traffic safety resource prosecutor and law enforcement coordinator, as well as training for law enforcement in the areas of drug evaluation and standard field sobriety testing.

Whatever ride-sharing service you prefer, make sure to request a sober ride before driving impaired.

Lyft is a ride-sharing service that dispatches the nearest available driver to your current location based on your phone's GPS. Simply download the mobile app to request a ride with the tap of a button.

Promo code: CDOTRideSafe

If you're new to Lyft, sign up with the promo code CDOTRideSafe for a $20 credit on your first ride. Once you download the app, create an account and enter the code in the payment section. Or, you can have a link to the app sent directly to your phone.

Wherever you're headed, with just the tap of a button, you can get a safe ride with Uber.

Promo code: NODUICO

Sign up and receive $15 off your first ride by entering NODUICO in the payment section of the app.

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