Alcohol and Drug Limits
- 1/29Maximum legal blood alcohol concentration while driving in Oklahoma
Drivers 21 and above are legally intoxicated at 0.08% BAC. Commercial drivers are limited to 0.04%. Under 21, any detectable BAC (0.00% or more) violates the Zero Tolerance Law.
When your BAC is 0.08% or more
Oklahoma law defines a BAC of 0.08% or higher as intoxicated. A DUI charge can occur with or without BAC evidence if the officer observes signs of impairment.
If your BAC is over 0.05% but under 0.08%
Drivers with a BAC between 0.05% and 0.08% can be arrested for impaired driving, fined $100 to $500, and jailed up to 6 months.
When you refuse to take a BAC test
Refusal to submit to a breath or blood test under Oklahoma Implied Consent Law results in automatic license revocation regardless of conviction.
On your first DUI offense
A first DUI offense results in criminal charges, including fines, jail time, and a 180-day license suspension.
If you receive a second DUI within 10 years
A second DUI within a 10-year span becomes a felony, increasing penalties and suspension periods.
After a second felony DUI conviction
After a second felony conviction, you may serve up to 7 years in prison and pay high fines. Your record permanently reflects the felony.
For a third or subsequent DUI conviction,
Third-time DUI offenders are subject to the harshest penalties including long-term imprisonment and fines.
After your first DUI conviction
Even on a first offense, your license is suspended for 180 days and other penalties may apply.
On your second DUI-related suspension
A second DUI results in longer suspension and possibly felony classification.
For your third DUI-related suspension
A third offense results in a 2-year license revocation and serious criminal consequences.
If you are under 21 and have any alcohol
Oklahoma prohibits any measurable alcohol for drivers under 21, including residual BAC from small amounts.
For a first Zero Tolerance violation
The first offense leads to a mandatory 6-month revocation and other possible court penalties.
On a second Zero Tolerance violation
A second Zero Tolerance violation doubles the revocation period and increases court involvement.
If under 16 and convicted of DUI
Convictions before age 16 extend cancellation and delay eligibility for a license.
For a first underage DUI conviction
Courts may impose community service, treatment, or fines depending on circumstances.
For a second underage DUI conviction
Repeat offenses by underage drivers lead to harsher penalties and longer revocation.
If you are under 18 and convicted of drug/alcohol offense
Courts may recommend revocation lasting up to the offender 21st birthday.
When you drive under marijuana influence
Even with legal use, marijuana impairs judgment and motor skills behind the wheel.
If you drive while impaired by prescription drugs
Many medications impair coordination, judgment, or alertness. Always check labels or consult professionals.
When alcohol and drugs are combined
Mixing alcohol with any drug worsens drowsiness and reaction time, increasing crash risk.
When driving under the influence of illegal drugs,
Driving under illegal substances like meth or narcotics leads to criminal charges and revocation.
For first BAC-related suspension over 0.05%,
Even BAC below 0.08% may lead to license suspension if you’re impaired.
For a second impairment-related suspension,
Multiple suspensions indicate repeated risk and result in harsher administrative penalties.
On a third impairment-related suspension,
Repeat violations escalate suspension periods and often involve mandatory treatment.
If you are arrested for DUI
A DUI arrest brings legal fees, reinstatement costs, court supervision, and increased insurance rates.
After a DUI, if required by court
Interlock devices prevent ignition unless the driver is alcohol-free, as detected by a breath sample.
If you cause injury while impaired
Impaired driving that causes injury elevates the charge to a felony, with severe consequences.
Impairment level at 0.08% BAC
Even before 0.08%, drivers may experience reduced control, balance, and reasoning.