Missouri DOR Permit Practice Test 18
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age15 years
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1. On a rural two-lane road you pass small blue signs, each naming one business with an arrow and a distance. What are they?
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Answer D: Tourist-oriented directional signs for traveler businesses
Tourist-oriented directional signs carry a white legend on blue and are used on rural conventional roads to guide travelers to eligible businesses.
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2. You are driving at night through heavy falling snow. Which headlight setting works better and why?
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Answer C: Low beams, because high beams bounce off the falling flakes back at you
Falling snow reflects light the way fog does, so high beams build a white wall of glare while low beams still give a usable view.
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3. You are turning left at an intersection just beyond the crest of a hill. What is the added risk?
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Answer B: Oncoming vehicles appear with very little warning and close quickly
A crest hides approaching traffic until it is close, so the gap you thought was empty can fill in the time the turn takes.
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4. Traffic safety experts describe three kinds of driver distraction. Which set is correct?
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Answer A: Visual, manual and cognitive
Distraction takes the eyes off the road, the hands off the controls or the mind off driving, and many activities do more than one of those at once.
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5. You have just passed a large truck on the freeway. Why is it dangerous to pull back in front of it and then brake for your exit?
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Answer B: A loaded truck needs much more distance to stop than a car
A fully loaded tractor-trailer can need the length of a football field or more to stop from highway speed. Cutting in and braking leaves the driver no room to avoid hitting you.
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6. Two solid white lines are painted between your lane and the lane beside it. What do they mean?
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Answer D: Crossing from one lane to the other is prohibited
Double solid white lines separate lanes of traffic going the same way and may not be crossed.
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7. In a work zone, the flagger's instructions conflict with the pavement markings still visible on the road. Which do you follow?
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Answer B: The flagger, because a person directing traffic outranks the markings
An authorized flagger controlling a temporary traffic control zone overrides signs, signals and markings, and drivers must obey the flagger's signals.
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8. You are making a U-turn at a signal on a green left arrow. Who must you still watch for?
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Answer D: People in the crosswalk you will cross as you come around
Even a protected arrow does not clear the crosswalk, and a U-turn sweeps across a crosswalk that pedestrians may already be using.
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9. What does black ice usually look like from the driver seat?
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Answer C: A patch of pavement that simply looks wet or slightly glossy
Black ice is clear, so you see the dark road through it and read it as a wet patch. In freezing weather, treat any wet looking patch as ice.
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10. The word SCHOOL is painted in large letters across the roadway. What is it doing?
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Answer D: Backing up the signs marking a school zone
Word markings on the pavement reinforce a message that is already signed, and a driver looking at the road ahead cannot miss them.
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11. After a Missouri officer takes a license for a BAC of .08 percent or more, when does the suspension begin?
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Answer B: 15 days after the notice is issued
The officer's notice can act as a 15-day driving permit, and the suspension or revocation begins 15 days later unless a hearing is requested.
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12. You are descending a long steep grade with a loaded truck close behind you. What should you do?
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Answer A: Hold a steady speed and let it pass when it can
Gravity pushes a loaded truck downhill and it cannot slow quickly, so give it a predictable speed and room to get by rather than braking in front of it.
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13. The gates at a railroad crossing begin to come down as you approach. What must you do?
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Answer A: Stop and wait until the gates are fully raised and the lights stop flashing
Once the gates start down you must stop clear of the tracks and wait until they are fully raised and the warning lights have stopped.
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14. The tire pressure monitoring symbol lights up on your dashboard. What is the system telling you?
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Answer A: At least one tire is significantly underinflated
The system warns when a tire falls well below the recommended pressure. Check all four with a gauge and inflate to the placard figure while they are cold.
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15. Which statement about standard drinks is correct?
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Answer C: A standard serving of beer, of table wine and of distilled spirits each contain about the same amount of pure alcohol
Roughly 12 ounces of regular beer, 5 ounces of table wine and 1.5 ounces of 80 proof spirits each contain about the same amount of pure alcohol, so the type of drink does not change the effect.
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16. Which trailer lights must work before you drive away?
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Answer B: The tail lights, brake lights and turn signals
The trailer hides the vehicle lights from anyone behind, so its own tail, brake and turn signals have to work before you move.
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17. You are approaching a yield sign and no other vehicle is anywhere in sight. What does the sign require?
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Answer A: Slow down and be ready to stop, but stop only if needed
A yield sign requires you to slow and give way, and to stop only when traffic or pedestrians make stopping necessary.
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18. You began a turn from the wrong lane and are already inside the intersection. What should you not do?
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Answer A: Reverse in order to get back into the correct lane
Backing up in an intersection puts you into the path of traffic that cannot expect it; finish the movement and fix your position afterwards.
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19. Which combination best reduces the chance of hydroplaning?
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Answer D: Good tread depth, correct tire pressure and lower speed in the rain
Tread channels water away, correct pressure keeps the tire's shape, and lower speed gives the tire time to push water aside. Hydroplaning can begin at surprisingly modest speeds.
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20. You brake hard on a wet road and need to steer around a stalled car. How do antilock brakes help you do that?
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Answer B: They stop the wheels locking, so the tires can still turn the vehicle
Locked wheels slide and cannot change direction. By preventing lockup the system lets you brake at full force and steer at the same time.
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21. Which Missouri Department of Transportation vehicles are covered by the move over law?
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Answer A: Those marked as emergency response or motorist assistance
A vehicle owned by the state highways and transportation commission qualifies when it is marked as a department of transportation emergency response or motorist assistance vehicle.
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22. What most often starts a rear wheel skid?
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Answer A: Too much speed, braking or acceleration for the grip available
A skid begins when what you ask of the tires exceeds what the surface can give, which is usually a matter of speed and of how abruptly you use the controls.
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23. The traffic around you is moving well above the limit on a wide highway. What should you do?
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Answer D: Keep to the limit and stay to the right, letting faster traffic pass
The limit is a legal maximum, and the safe way to differ from the traffic around you is to keep right and let it go by.
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24. A pedestrian waiting at a curb faces a steady upraised hand. What does that indication mean?
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Answer A: Do not start to cross in that direction
A steady upraised hand forbids entering the crosswalk, while a flashing hand only forbids starting a new crossing.
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25. Every signal head at an intersection is flashing red in all directions. How should you treat the intersection?
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Answer C: As an all-way stop, stopping and then going in turn
Red flashing in every direction means each approach must stop, so the intersection works exactly like an all-way stop.