Drink-driving limits in Missouri (2026)

Last reviewed: 29 October 2026

In short: Missouri sets its own drink-driving rules. The general limit is 0.08% blood alcohol. Fields not shown are not yet verified.

Rule	What applies
Blood alcohol limit for ordinary driversDriving after drinking alcohol	0.08 % blood alcohol ^[1]
Limit for professional or commercial driversDriving after drinking alcohol	0.04 percent or more by weight of alcohol in the blood when operating a commercial motor vehicle. ^[1]
Random breath tests without suspicionDriving after drinking alcohol	⚠ Not yet verified
Lower limit for novice or young driversDriving after drinking alcohol	Under 21: the Department of Revenue suspends or revokes the licence of a driver arrested on probable cause of a traffic offence while driving with a blood alcohol content of two-hundredths of one percent (0.02) or more by weight. ^[2]
Maximum penaltiesDriving after drinking alcohol	A first offence of driving while intoxicated is a class B misdemeanour: up to six months in prison and a fine of up to $1,000. A prior offender or a case with a child under 17 in the vehicle is a class A misdemeanour (up to one year, fine up to $2,000). Persistent, aggravated, chronic and habitual offenders face felony charges. ^[3]

Sources

These rules are set at national level in the United States and apply here too, alongside the rules above. All national rules for the United States

Limit for professional or commercial drivers	0.04% alcohol concentration or more: a driver subject to commercial driver's licence rules must not report for or remain on duty performing safety-sensitive functions, and an employer who knows of it must not let the driver continue. (source: Electronic Code of Federal Regulations (Office of the Federal Register))

State	Blood alcohol limit for ordinary drivers	Lower limit for novice or young drivers	Limit for professional or commercial drivers	Random breath tests without suspicion	Maximum penalties
Missouri	0.08%	0.02% (under 21)	0.04% (commercial vehicle)	⚠ Not yet verified	1st: up to 6 months; fine up to $1,000
Arkansas	0.08%	0.02% under 21	0.04% (commercial vehicle)	⚠ Not yet verified	Up to 1 year jail, $150-1,000 fine
Iowa	0.08%	0.02% (under 21)	0.04% (commercial)	⚠ Not yet verified	Min. 48 hours jail; $1,250 fine
Illinois	0.08%	Zero (under 21)	0.04% (commercial vehicles)	⚠ Not yet verified	Class A misdemeanor (1st)
Kansas	0.08%	0.02% (under 21)	0.04% (commercial vehicle)	⚠ Not yet verified	Min. 48 hours; $750-$1,000 fine
Kentucky	0.08%	0.02% (under 21)	Any alcohol; 0.04% = DUI	Yes, traffic safety checkpoints	Up to 30 days; $200-$500 fine
Nebraska	0.08%	0.02% (under 21)	0.04% (commercial vehicle)	⚠ Not yet verified	Class W misdemeanour; 6-month revocation

CannabisPossession for personal use: Legal for adults 21+, within limits · Growing at home: Yes, with a registration card
Car speed limitsBuilt-up areas: 25 mph unless posted · Outside built-up areas (single carriageway): 60 mph
Minimum age for a car driving licenceMinimum age for a car licence: 16 (intermediate licence) · Earliest age to drive a car supervised: 15 (instruction permit)
E-bikes and speed pedelecsLegal class: Class 1, 2, 3 (bicycle) · Minimum age: 16+ for Class 3
FireworksConsumers may buy and use category F2 fireworks: Yes (permitted retailers) · Minimum age to buy: 14 (under 14 with parent)
Knives and pepper sprayFolding pocket knives: Concealed carry banned only in restricted areas
Statutory minimum wageNational statutory minimum wage: Yes · Current adult minimum wage (gross): $15.00 per hour
Using a mobile phone while drivingHolding a phone while driving banned: Banned · Hands-free use: Hands-free allowed
Seat belts and child seatsSeat belt compulsory in front seats: Yes, driver and front-seat passengers · Seat belt compulsory in rear seats: No for adults; children under 16 must be secured
Tobacco and nicotine age limitsMinimum age to buy tobacco: 21 · Minimum age to buy e-cigarettes: 21
Drinking age and alcohol salesMinimum age to buy beer and wine: 21 (supplying under 21 banned) · Minimum age to buy spirits: 21 (supplying under 21 banned)

General information, not legal advice. Rules change: check the official source before you fly or ride.