Missouri State Highway Patrol — Public Information and Education Division
DWI Enforcement
Missouri law enforcement officers do not tolerate impaired drivers or the devastation they cause. If an officer suspects a driver is driving while impaired by alcohol, drugs, or both, the officer will administer field sobriety tests. Any level of impairment may result in a DWI charge.
Legal Limits
Over age 21: A blood alcohol level of .08 percent is enough evidence to prove impairment.
Under age 21: A blood alcohol level of .02 percent is enough evidence to prove impairment.
• It is illegal in Missouri for anyone under 21 to purchase, attempt to purchase, possess, or consume alcoholic beverages or marijuana.
• It is illegal to consume an alcoholic beverage or marijuana while operating a motor vehicle, including passengers.
Hidden Costs: When Arrested for DWI, Expect
• Court fines/costs
• Restitution paid to the victim
• Increase in insurance rates
• Driver license sanctions, fees, and reinstatement
• Towing fees/vehicle repair or replacement
• Bail money if arrested
• Inconvenience and cost of ignition interlock and monitoring devices
• Civil suit filed by victim
• Attorney fees
The Cost Is More Than Just Financial
The consequences of a DWI conviction can undermine a person's future opportunities and haunt them for years.
• The experience of being in jail and possibility of future incarceration.
• Shame and embarrassment.
• Participation in drunk driving education programs.
• Personal and professional relationships may be affected.
• College financial aid, admissions, and scholarships may be affected.
• Potential loss of employment or professional licensing.
• A convicted felon may not vote, run for office, or own firearms.
• Life-altering injuries to yourself and others.
• Lifelong regret if someone is hurt or killed.
Instead of Drinking and Driving
• Designate a sober driver.
• Locate free ride services before you go out.
• Call a family member or friend for a ride.
• Take the bus or a taxi.
• Stay with a friend or get a hotel room.
• Use a ride sharing program (Uber, Lyft).
More Information
More detailed explanations of Missouri's DWI laws can be found in the Missouri State Highway Patrol's brochures at www.statepatrol.dps.mo.gov under publications/brochures.