Missouri Lanes & Turns practice test
Practice lane markings, turns, passing and merging: 31 questions based on the Missouri Driver Guide, 9 of them on Missouri's own rules.
Key Missouri facts: Lanes & Turns
A vehicle may not travel more than 500 feet in a two-way left-turn lane. Chapter 3, Rules of the Road, Two-Way Left-Turn Lanes, PDF p. 28 On roads with three or more lanes one way, stay right except to pass, using the center lane if many vehicles are entering the right lane. Chapter 7, Pavement Markings, Traffic Signs, and Signals, No Lane Markings, PDF p. 45 Lanes should not be changed inside a roundabout. Chapter 3, Rules of the Road, Roundabouts, PDF p. 29 Entering a roundabout by turning left is never allowed. Chapter 3, Rules of the Road, Roundabouts, PDF p. 28 At a J-turn, drivers turn right with traffic, merge to the far left lane, then turn left the way they intend to go. Chapter 3, Rules of the Road, J-Turn Intersections, PDF p. 29 Sample Lanes & Turns questions
How far may you travel in a two-way left-turn lane?
No more than 100 feet No more than 500 feet No more than one mile As far as you need Show the answer
No more than 500 feet
It is for slowing and preparing to turn, not a travel lane.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, Two-Way Left-Turn Lanes, PDF p. 28
How should you never enter a roundabout?
By turning left By turning right By yielding first Show the answer
By turning left
Enter with a slight right turn and go counterclockwise around the island.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, Roundabouts, PDF p. 28
Your view is blocked near a bridge. Within what distance may you not drive on the left of the road?
1,000 feet 100 feet 10 feet 25 feet Show the answer
100 feet
The same distance applies to a viaduct or tunnel.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, Passing on the Left, PDF p. 24
May you change lanes inside a Missouri roundabout?
Yes, whenever it is clear No, do not change lanes Yes, if you signal first Show the answer
No, do not change lanes
Pick your lane before you enter, using signs and pavement markings.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, Roundabouts, PDF p. 29
A street has two left-turn lanes and you turn from the right one. Which lane should you end in?
The right lane The left lane Either lane The shoulder Show the answer
The right lane
Stay in line: the left-side turn lane enters the left lane, and the right-side turn lane enters the right.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, Multiple Left-Turn Lanes, PDF p. 28
On a road with three lanes your way, when should you use the center lane?
At all times, as a travel lane Only when making a U-turn Whenever traffic is light When many cars enter the right lane Show the answer
When many cars enter the right lane
Stay right except to pass, but use the center lane if much traffic is entering the right lane.
Source: Missouri Driver Guide, Chapter 7, Pavement Markings, Traffic Signs, and Signals, No Lane Markings, PDF p. 45
You cross a four-lane highway at a J-turn intersection. How do you first enter the highway?
Turn right with traffic Back into the far lane Drive straight across all lanes Turn left across traffic Show the answer
Turn right with traffic
You turn right, merge to the far left lane, then make a left turn in your intended direction.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, J-Turn Intersections, PDF p. 29
On which road may you pass another vehicle on the right, without it turning left?
A two-lane country road A one-way street Any road, if you signal Any road with a wide shoulder Show the answer
A one-way street
A one-way street is one of the listed cases. Never leave the pavement to do it.
Source: Missouri Driver Guide, Chapter 3, Rules of the Road, Passing on the Right, PDF p. 24
You want to turn from a dual-use lane, but only the straight arrow is showing. What should you do?
Change lanes in the junction Go straight, then reverse Wait for the turn arrow Turn if it looks clear Show the answer
Wait for the turn arrow
When both arrows show you may turn or go straight, but a turn needs the turn arrow.
Source: Missouri Driver Guide, Chapter 7, Pavement Markings, Traffic Signs, and Signals, Dual-Use Lanes, PDF p. 45
Another vehicle is passing you. What should you do?
Speed up so it finishes faster Move toward the center line Keep your lane position and speed Show the answer
Keep your lane position and speed
Let the other vehicle pass. Keeping your position and speed makes its move predictable.
Source: California Driver's Handbook, Section 6, Navigating the Roads ; Ohio Driver Manual, Digest of Motor Vehicle Laws, Ohio Driver Manual, Section 5, Passing ; Virginia Driver's Manual (DMV 39), Section 3, Safe Driving: Passing (pp. 17-18) ; Missouri Driver Guide, Chapter 6, Being Passed, PDF p. 40 ; Alabama Driver Manual, Chapter 6, Traffic Laws, Passing, PDF p. 66 ; South Carolina Driver's Manual, Section 7, General Driving, Passing, p. 7-16 (PDF p. 91) ; Utah Driver Handbook, Section 8, E. Passing, PDF p. 44 ; MDPS Driver's License Manual, Other Safe Passing Guidelines, PDF p. 47 ; 21 Del. C. § 4116, 21 Del. C. § 4116(4) ; Maine Driver's License Manual (Rev 4/24), Section 7, Passing (When being passed), PDF p. 67 ; South Dakota Driver License Manual (revised 11/2024), General Driving, Adjusting to Traffic and Interstate Driving, Passing, PDF p. 46
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About these questions
We wrote these practice questions from the facts in the Missouri Driver Guide (Revised August 2026 (cover), read 2026-11-08, plus the Department of Revenue page on the Graduated Driver License Law edition) and from official sources on road signs. Every answer links to its source, so you can check it and read more.
DMV Decoded is an independent guide, not a government agency. This practice test is not connected to the Missouri Department of Revenue, and your actual test will have different questions. Study the handbook, and check the agency's website for current rules.
