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Highway Driving — Missouri Driver's License Practice Test

Highway DrivingQuestion 1 of 27

27 questions in this topic · 27 drawn at random this round

How often should you check your rearview mirrors while driving on the highway?

Missouri Driver Guide

All questions are based on the official Missouri Driver Guide (Missouri Dept. of Revenue). Study the relevant chapter to reinforce your knowledge.

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This Missouri Driver's License Highway Driving practice set has 27 practice questions based on the official exam materials, each with an instant explanation. You need 80% on the real Missouri Driver's License knowledge test to pass.

Topic overview

This section covers driving on highways, including how to use lanes, pass other vehicles safely, and enter or leave controlled-access highways. It also explains what to do in an emergency, how to handle a breakdown, and how to stay alert. Highway speeds leave little room for error, so these habits help you drive predictably and avoid crashes.

On a two-lane highway, drive in the right lane and cross the center line to pass only when there are no oncoming vehicles and no solid yellow line. On a highway of four or more lanes, keep right except when passing, letting others enter, or preparing for a legal left turn. Use the left lane only to pass, and never use the shoulder or unpaved part to pass. Before passing, check your mirrors and briefly look over your shoulder for blind spots, get through the other driver's blind spot quickly without exceeding the speed limit, and do not return to the right lane until you can see the passed vehicle in your rearview mirror.

On controlled-access highways you can enter and leave only at ramps: use the entrance ramp and acceleration lane to match highway speed, yield to traffic already on the highway, and use the deceleration lane and exit ramp to slow down. Never stop on the highway itself; if you miss your exit, get off at the next one instead of stopping, backing up, or turning around. If you break down, get off the road, turn on your flashers, place flares behind the vehicle, never stand in the roadway, and lift the hood or tie a white cloth. Watch for highway hypnosis and drowsiness — tired drivers can be as dangerous as intoxicated ones — and the cellular number to call in a highway emergency is *55.

When is it safe to pass on a two-lane highway?

Only cross the center line to pass when there are no oncoming vehicles and no solid yellow line. Check your mirrors and glance over your shoulder for blind spots first, get through the other driver's blind spot quickly without exceeding the speed limit, and return to the right lane only after you can see the passed vehicle in your rearview mirror.

What should I do if my vehicle breaks down on the highway?

Get off the road and turn on your flashers. Do not stop just over a hill or around a curve, place flares behind the vehicle, never stand in the roadway, and lift the hood or tie a white cloth to signal for help. You may stop on the shoulder in an emergency, and the cellular number to call is *55.

What if another driver is tailgating or passing me?

If another vehicle begins passing you, stay in your lane and do not increase your speed. If many vehicles pass you in the right lane, you are going too slow and should move into the right lane when clear; going much slower than others can be as dangerous as speeding, so pull over to let piled-up traffic pass.

Written from the official Missouri Driver Guide — Highway Driving ↗· Last checked: 2026-07-10· Reviewed by the PassPrep editorial team· How we verify →

Sample questions

Three questions from the Highway Driving bank with the correct answer and an explanation. The practice quiz above draws 27 questions at random from the same bank.

What does the Missouri Driver Guide say about taking your eyes off the road or reading a map while driving?
- Do not look away for more than a few seconds, and pull off the road to read a map — Correct answer
- It is fine to read a map while driving on a straight road
- You may look away for up to 15 seconds at highway speeds
- Only passengers, not drivers, should ever read maps
Explanation: Never take your eyes off the road for more than a few seconds, and pull safely off the road if you need to read a map.
Handbook: Highway Driving — Staying Observant
On a two-lane highway (one lane in each direction), when may you cross the center line to pass?
- Only when there are no oncoming vehicles and no solid yellow line — Correct answer
- Any time the road ahead looks empty for a moment
- Only when a solid yellow line is on your side
- Whenever you are running late
Explanation: Drive in the right lane and cross the center line to pass only when there are no oncoming vehicles and no solid yellow line.
Handbook: Highway Driving — Drive in the Proper Lane
On a highway with four or more lanes, what is the general rule about which lane to use?
- Keep right except when passing, letting others enter, or preparing for a legal left turn — Correct answer
- Always drive in the far left lane
- Use whichever lane has the fewest cars at all times
- Stay in the center lane and never change
Explanation: Keep to the right except when passing slower traffic, letting another driver enter safely, or preparing for a legal left turn.
Handbook: Highway Driving — Drive in the Proper Lane