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Excessive blood concentration. Any BAC of at least .08% is considered excessive. The BAC threshold is reduced to .04% if the licensee is driving a commercial vehicle. And Missouri has underage DWI laws that prohibit motorists who are under 21 years old from driving with a BAC of .02% or more.
The amount of alcohol a person must drink to reach the legal limit depends on a number of individual factors.
|1st Offense||2nd Offense||3rd Offense|
Up to 6 months
|Up to 1 year||Up to 4 years|
Up to $1,000
|Up to $2,000||Up to $10,000|
30 days, then 60-day restricted license
|5-year revocation||10-year revocation|
|Ignition Interlock Device||
Possible as a condition of restricted license
|6 months minimum||6 months minimum|