Implied Consent and DUI Penalties

Key points

1. Driving means you have agreed to take tests to determine your blood alcohol content.

   Source: Handbook p. 65

   “The very act of driving or being in actual physical control of a motor vehicle means that you have agreed to take one or more tests to determine your blood alcohol content (BAC).”
   Oklahoma Driver Manual, Handbook p. 65

2. Refusing a test means automatic revocation, even if you have not been drinking.

   Source: Handbook p. 65

   “Refusal to take the test upon request by a law enforcement officer will result in an automatic revocation of your driving privilege, even if you have not been drinking.”
   Oklahoma Driver Manual, Handbook p. 65

3. A BAC of 0.08 or more revokes your license even if you are not convicted of DUI.

   Source: Handbook p. 65

   “If the BAC level is 0.08 or more (or any measurable amount if you are under 21 years old), your driver license will be revoked”
   Oklahoma Driver Manual, Handbook p. 65

4. An implied consent revocation lasts from 180 days to 2 years, depending on your record.

   Source: Handbook p. 65

   “the revocation period will be from 180 days to 2 years, depending on your previous driving record.”
   Oklahoma Driver Manual, Handbook p. 65

5. A BAC over 0.05 is evidence that your driving was impaired.

   Source: Handbook p. 65

   “An alcohol concentration more than 0.05 is relevant evidence that the driver’s ability to drive was impaired.”
   Oklahoma Driver Manual, Handbook p. 65

6. A first DUI is a misdemeanor with 10 days to 1 year in jail.

   Source: Handbook p. 65

   “■ a misdemeanor ■ imprisonment in jail for not less than ten days nor more than 1 year and”
   Oklahoma Driver Manual, Handbook p. 65

7. A 12 ounce beer, 5 ounce glass of wine and 1.5 ounces of 80 proof spirits hold the same alcohol.

   Source: Handbook p. 64

   “A 12-ounce can of beer, a 5-ounce glass of wine and a cocktail with 1.5 ounces of 80-proof distilled spirits all contain the same amount of alcohol.”
   Oklahoma Driver Manual, Handbook p. 64

8. Driving with any detectable level of cannabis in your system is illegal.

   Source: Handbook p. 66

   “it is illegal for anyone to drive with any detectable level of cannabis in their system.”
   Oklahoma Driver Manual, Handbook p. 66

Numbers to know

3 questions from the Oklahoma practice test

1. 1. Under Oklahoma's implied consent law, what BAC level causes license revocation for an adult driver even without a DUI conviction?

   1. 0.05 or more
   2. 0.10 or more
   3. 0.08 or more
   4. Only a refusal causes revocation
   Show answer

   0.08 or more. For a driver who is not under 21, a BAC of 0.08 or more can trigger license revocation under implied consent even when a court has not entered a DUI conviction. The 0.05 figure is relevant evidence of impairment, but it is not the threshold described here. A 0.10 threshold is too high, and refusal is not the only route to revocation. The key cue is that the administrative action follows the test result separately from the criminal case.

2. 2. Can Oklahoma revoke a driver's license for a BAC of 0.08 or more without a court DUI conviction?

   1. No, a conviction is always required
   2. Yes, under the implied consent process
   3. Only after a second conviction
   4. Only when the driver is under 21
   Show answer

   Yes, under the implied consent process. Yes. Oklahoma's implied consent section says a BAC of 0.08 or more can lead to license revocation even if the driver is not convicted of DUI in court. That is an administrative consequence tied to the test result, separate from criminal penalties. The choice “No, a conviction is always required” wrongly makes revocation depend on conviction, and the remaining choices incorrectly restrict the rule to repeat offenses or younger drivers. Remember that refusal can also cause automatic revocation.

3. 3. What may happen to an Oklahoma driver license when the BAC level is 0.08 or more?

   1. The license is automatically renewed for one year
   2. The license will be revoked, even without a DUI conviction
   3. The license is unaffected unless the driver caused a crash
   4. The license is suspended only after a second offense
   Show answer

   The license will be revoked, even without a DUI conviction. The implied consent passage says that when the BAC level is 0.08 or more, the driver license will be revoked even if the driver is not convicted in court of DUI. The same paragraph applies to any measurable BAC for a driver under 21. A renewal is not granted by the rule, and the passage does not wait for a crash or a second offense before describing revocation. Treat the BAC threshold as a separate license consequence from the criminal penalties discussed later, because the administrative action can occur without a court conviction.

Source: the Oklahoma Driver Manual, Chapter 12: Alcohol, Drugs and Driving. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.