Missouri

GHSA maintains data on state laws surrounding a number of highway safety issues. Below is information regarding laws in the state of Missouri. For more information, consult the State Highway Safety Office.

Missouri
Motorcycle Helmet Required?

Motorcyclists may ride without helmets if they are 26 yrs or older and have medical insurance.

Missouri
Length of Regular Renewal Cycle

6 years

Missouri
Provisions for Mature Drivers

70 and over: renewal every 3 years

Missouri
DUID Zero Tolerance or Per se Laws for Some Drugs

None

Missouri
Marijuana Possession and Use

None

Missouri
Marijuana Impaired Driving

Decriminalized and legal for medical use

Missouri
Rural Interstates: Cars (MPH)

70

Missouri
Rural Interstates: Trucks (MPH)

70

Missouri
Urban Interstates: Cars (MPH)

60

Missouri
Urban Interstates: Trucks (MPH)

60

Missouri
Other Limited Access Roads: Cars (MPH)

70

Missouri
Other Limited Access Roads: Trucks (MPH)

70

Missouri
Open container laws

No

Missouri
Repeat Offender Laws

Yes

Missouri
Increased penalty for high BAC

0.15

Missouri
Administrative license suspension on first offense

90 days

Missouri
Limited driving privileges during suspension

After 0 days with interlock use (restricted); After 30 days (restricted)

Missouri
Ignition Interlocks

Mandatory for repeat convictions

Missouri
Child Restraint Required

Under 4 yrs or under 40 lbs in child safety seat
4-7 yrs and 40-80 lbs and 4'9" or shorter in child safety seat or booster seat
At least 80 lbs or taller than 4'9" in booster seat or safety belt

Missouri
Adult Safety Belt Permissible

At least 8 yrs and 80 lbs or taller than 4'9" 

Missouri
Full Privilege Minimum Age

18 years

Missouri
Learner Stage: Minimum Age (Years/Months)

15

Missouri
Learner Stage: Minimum Duration (Months)

6

Missouri
Learner Stage: Supervised Driving Hours (Night Hours in Parenthesis)

40 (10)

Missouri
Intermediate Stage: Minimum Age (Years/Months)

16

Missouri
Intermediate Stage: Nighttime Driving Restriction

1 a.m. - 5 a.m.

Missouri
Intermediate Stage: Passenger Restrictions (Except Family, Unless Noted)

First 6 months: no more than 1 under 19 Thereafter: no more than 3 under 19

Missouri
Type of Law

Secondary; Primary for riders ages 8 through 15

Missouri
Who is Covered?

8 and over

Missouri
In What Seat?

8-15 yrs: All (primary enforcement) 16 and over: Front

Missouri
Hand-Held Ban?

Yes. Secondary Law. (Effective 8/29/2023; citations begin 1/1/2025)

Missouri
All Cell Phone Ban? School Bus Drivers

Yes. Secondary Law. (Effective 8/29/2023; citations begin 1/1/2025)

Missouri
All Cell Phone Ban? Novice Drivers

No

Missouri
Text Messaging Ban?

For drivers 21 and under. Primary law.
All drivers. Secondary Law. (Effective 8/29/2023; citations begin 1/1/2025)

Missouri
Speed Cameras: State Law

No state law

Missouri
Speed Cameras: Where Permitted

Permitted by city ordinance

Missouri
Red Light Cameras: State Law

No state law

Missouri
Red Light Cameras: Where Permitted

Permitted by city ordinance
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