Missouri driving laws

The rules your permit test asks about, in plain English. Each one is quoted from Missouri’s statutes or an official DOR page. Handbooks are often years out of date, so where the law has changed we follow the law.

Checked October 2, 2026.

The short version

Alcohol and drugs (DUI)
It is illegal to drive while intoxicated or with a blood alcohol concentration of 0.08% or more (0.04% in a commercial vehicle).
Seat belts and child seats
The driver and front-seat passengers of a passenger car must wear seat belts, and children under 16 must be buckled or in a child seat in any seat.
School buses
Traffic in both directions must stop for a school bus that is stopped to load or unload children with its stop signals on, and wait until the bus moves or the driver signals.

Phones and texting

Missouri's Siddens Bening Hands Free Law bars every driver from holding a phone or other electronic device, and from texting, calling, browsing or watching video on one, unless using a voice-operated or hands-free feature. It is a secondary offense: police cannot stop you for it alone.

Official wording (6 sources)
  • “Physically hold or support, with any part of his or her body, an electronic communication device”
    revisor.mo.gov
  • “Operators of noncommercial motor vehicles using an electronic communication device solely through a voice-operated or hands-free feature or function”
    revisor.mo.gov
  • “For a conviction under this section where there is no prior conviction under this section within the preceding twenty-four months, the court shall impose a fine of up to one hundred fifty dollars.”
    revisor.mo.gov
  • “No person shall be stopped, inspected, or detained solely for a violation of this section.”
    revisor.mo.gov
  • “Prior to January 1, 2025, a law enforcement officer who stops a noncommercial motor vehicle for a violation of this section shall not issue a citation”
    revisor.mo.gov
  • “304.820. (Repealed L. 2023 S.B. 398)”
    revisor.mo.gov

Alcohol and drugs (DUI)

It is illegal to drive while intoxicated or with a blood alcohol concentration of 0.08% or more (0.04% in a commercial vehicle). Drivers under 21 lose their license at 0.02%. Refusing a chemical test revokes your license for one year.

Official wording (7 sources)
  • “A vehicle while having eight-hundredths of one percent or more by weight of alcohol in his or her blood; or (2) A commercial motor vehicle while having four one-hundredths of one percent or more by weight of alcohol in his or her blood.”
    revisor.mo.gov
  • “such person violated a state, county or municipal traffic offense and such person was driving with a blood alcohol content of two-hundredths of one percent or more by weight”
    revisor.mo.gov
  • “A person commits the offense of driving while intoxicated if he or she operates a vehicle while in an intoxicated condition. 2. The offense of driving while intoxicated is: (1) A class B misdemeanor”
    revisor.mo.gov
  • “For a class A misdemeanor, two thousand dollars; (3) For a class B misdemeanor, one thousand dollars”
    revisor.mo.gov
  • “For a class B misdemeanor, a term not to exceed six months”
    revisor.mo.gov
  • “the period of suspension shall be thirty days after the effective date of suspension, followed by a sixty-day period of restricted driving privilege”
    revisor.mo.gov
  • “Upon receipt of the officer's report, the director shall revoke the license of the person refusing to take the test for a period of one year”
    revisor.mo.gov

Seat belts and child seats

The driver and front-seat passengers of a passenger car must wear seat belts, and children under 16 must be buckled or in a child seat in any seat. For adults it is a secondary offense with a fine of up to $10; intermediate license holders must have every occupant buckled.

Official wording (7 sources)
  • “front seat passenger of a passenger car manufactured after January 1, 1968, operated on a street or highway in this state”
    revisor.mo.gov
  • “No person shall be stopped, inspected, or detained solely to determine compliance with this subsection.”
    revisor.mo.gov
  • “each person who violates the provisions of subsection 2 of this section is guilty of an infraction for which a fine not to exceed ten dollars may be imposed”
    revisor.mo.gov
  • “Each driver of a motor vehicle transporting a child less than sixteen years of age shall secure the child in a properly adjusted and fastened restraint under section 307.179 .”
    revisor.mo.gov
  • “Children less than four years of age, regardless of weight, shall be secured in a child passenger restraint system appropriate for that child”
    revisor.mo.gov
  • “Children at least four years of age but less than eight years of age, who also weigh at least forty pounds but less than eighty pounds, and who are also less than four feet, nine inches tall, shall be secured in a child passenger restraint system or booster seat”
    revisor.mo.gov
  • “Each intermediate driver's license shall be restricted by requiring that the driver and all passengers in the licensee's vehicle wear safety belts at all times.”
    revisor.mo.gov

Move Over law

When you approach a stopped vehicle showing red, red-and-blue, amber, or amber-and-white lights, move to a lane not next to it if you are on a road with at least two lanes in your direction. If changing lanes is unsafe or impossible, slow down to a safe speed.

Official wording (2 sources)
  • “Upon approaching a stationary vehicle displaying lighted red or red and blue lights, or a stationary vehicle displaying lighted amber or amber and white lights, the driver of every motor vehicle shall”
    revisor.mo.gov
  • “Proceed with due caution and reduce the speed of the vehicle, maintaining a safe speed for road conditions, if changing lanes would be unsafe or impossible.”
    revisor.mo.gov

School buses

Traffic in both directions must stop for a school bus that is stopped to load or unload children with its stop signals on, and wait until the bus moves or the driver signals. You need not stop if the bus is on a separate roadway, or is going the opposite way on a highway with four or more lanes.

Official wording (2 sources)
  • “upon meeting or overtaking from either direction any school bus which has stopped on the highway for the purpose of receiving or discharging any school children and whose driver has in the manner prescribed by law given the signal to stop, shall stop the vehicle before reaching such school bus”
    revisor.mo.gov
  • “need not stop upon meeting or overtaking a school bus which is on a different roadway, or which is proceeding in the opposite direction on a highway containing four or more lanes of traffic”
    revisor.mo.gov

Speed limits

Missouri's uniform maximum limits are 75 mph on rural interstates and freeways, 65 mph on rural expressways, 60 mph on urban interstates, freeways and expressways and on other roads, and 55 mph on lettered state roads, unless posted otherwise.

Official wording (4 sources)
  • “Upon the rural interstates and freeways of this state, seventy-five miles per hour; (2) Upon the rural expressways of this state, sixty-five miles per hour”
    revisor.mo.gov
  • “Upon the interstate highways, freeways or expressways within the urbanized areas of this state, sixty miles per hour”
    revisor.mo.gov
  • “Such lettered roads shall not exceed fifty-five miles per hour unless set at a higher speed as established by the department of transportation”
    revisor.mo.gov
  • “The speed limit in any city, town, or village is 25 mph, unless posted otherwise.”
    dor.mo.gov

After a crash

You must send a written accident report to the Missouri Department of Revenue within 30 days if an uninsured driver was involved and someone was hurt or killed or property damage was over $500. The Driver Guide also advises reporting crashes to local law enforcement.

Official wording (2 sources)
  • “in excess of five hundred dollars is sustained, and the owner or operator of every motor vehicle which is involved in an accident within this state if such owner or operator does not carry motor vehicle liability insurance shall, within thirty days after such accident, report the matter in writing to the director”
    revisor.mo.gov
  • “Someone involved in the accident did not have liability insurance coverage; AND • There is damage to or more person's property in excess of $500, or there was personal injury or death.”
    dor.mo.gov

Insurance

Missouri requires liability insurance of at least $25,000 for injury or death of one person, $50,000 for two or more people, and $25,000 for property damage (25/50/25), plus uninsured motorist coverage of $25,000/$50,000.

Official wording (2 sources)
  • “twenty-five thousand dollars because of bodily injury to or death of one person in any one accident and, subject to said limit for one person, fifty thousand dollars because of bodily injury to or death of two or more persons in any one accident, and twenty-five thousand dollars because of injury to or destruction of property of others in any one accident”
    revisor.mo.gov
  • “The law also requires you to have uninsured motorist coverage of $25,000 for bodily injury per person and $50,000 for bodily injury per crash.”
    dor.mo.gov

Motorcycle helmets

Riders and passengers under 26 must wear a helmet. Riders 26 and older may ride without one only if they have health insurance covering motorcycle crash injuries; anyone riding on an instruction permit must wear a helmet at any age.

Official wording (3 sources)
  • “Every person under twenty-six years of age who is operating or riding as a passenger on any motorcycle or motortricycle, as defined in section 301.010 , upon any highway of this state shall wear protective headgear at all times the vehicle is in motion”
    revisor.mo.gov
  • “any person twenty-six years of age or older operating any motorcycle or motortricycle who has been issued an instruction permit shall wear protective headgear at all times the vehicle is in motion”
    revisor.mo.gov
  • “is covered by a health insurance policy or other form of insurance which will provide the person with medical benefits for injuries incurred as a result of an accident while operating or riding on a motorcycle”
    revisor.mo.gov

Motorcycle permit rules

You can get a motorcycle instruction permit at 15 1/2 with parental consent after completing an approved rider training course, or at 16 without the course. Riders under 16 may ride only in daylight, within 50 miles of home, on a motorcycle of 250 cc or less, with no passengers.

Official wording (5 sources)
  • “Any person at least fifteen and one-half years of age who, except for age or lack of instruction in operating a motor vehicle, would otherwise be qualified to obtain a motorcycle or motortricycle license”
    revisor.mo.gov
  • “The director shall issue a temporary motorcycle instruction permit under this section if the applicant has completed a motorcycle rider training course approved under sections 302.133 to 302.138”
    revisor.mo.gov
  • “shall be entitled to operate a motorcycle or motortricycle for a period of six months upon the highways of the state, and persons under the age of sixteen shall be subject to the following restrictions”
    revisor.mo.gov
  • “The operator shall not carry any passengers; and (4) The operator shall not travel over fifty miles from the operator's home address.”
    revisor.mo.gov
  • “If you are 16 years old or older you may apply for a motorcycle instruction permit, but the motorcycle rider training course is not required.”
    dor.mo.gov

Lane splitting

No Missouri law allows lane splitting or lane filtering, so riding between lanes or between rows of cars is not legal. Stay within a single lane.

Official wording (2 sources)
  • “A vehicle shall be driven as nearly as practicable entirely within a single lane and shall not be moved from such lane until the driver has first ascertained that such movement can be made with safety”
    revisor.mo.gov
  • “Cars and motorcycles need a full lane to operate safely. Lane sharing is usually prohibited.”
    dor.mo.gov

This page summarizes the law for study purposes and is not legal advice. Laws change; confirm with Missouri Department of Revenue, Driver License Bureau.

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