Illinois SOS Permit Practice Test 19
- Questions35
- Correct to pass28
- Passing score80%
- Minimum age15 years
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1. At an intersection that uses a lagging left turn, when is the left-turn arrow displayed?
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Answer B: After the through movement has run
A lagging left turn phase runs at the end of the green rather than the start, so a driver waiting to turn should not assume the arrow has been missed.
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2. Four vehicles reach a four-way stop from all four directions at the same instant. How is the deadlock resolved?
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Answer C: Each driver yields to the vehicle on the right and they go one by one
Yielding to the right applies to every driver, so the group untangles itself as drivers take turns rather than moving together.
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3. You carry reflective warning triangles in your car. How should they be used after a breakdown?
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Answer B: Set out behind the vehicle, far enough back to warn traffic before it arrives
A warning device works only if drivers see it in time to react, so it is placed well back along the road they are traveling.
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4. What should you do before you back out of your own driveway at home?
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Answer A: Walk around the vehicle and check behind it for children or objects
A small child, a bicycle or a toy can sit entirely inside the blind area behind a vehicle, and a walk-around is the only way to be sure it is clear.
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5. Why is parking next to a fire hydrant or in a marked fire lane prohibited?
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Answer D: It would delay firefighters who need immediate access to the hydrant or the building
Fire hydrants and fire lanes must remain clear at all times so emergency crews can connect hoses and reach a building without delay.
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6. On a two-lane road, a solid yellow line runs on your side of the center while a broken yellow line runs on the other side. What does this mean?
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Answer D: You may not pass, although oncoming drivers may
Passing restrictions are read from the line closest to your own lane, so a solid yellow line on your side creates a no-passing zone for you alone.
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7. You are turning left at an intersection and an oncoming bicyclist is approaching in the bike lane. What must you do?
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Answer B: Yield and complete the turn only after the bicyclist has passed
A bicycle in the roadway has the same right of way as a vehicle, so a left-turning driver must yield to an oncoming rider just as to an oncoming car.
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8. How should a driver respond to this sign?
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Answer C: Slow down before reaching the rough spot and cross it at a steady, low speed
Losing speed before a sharp rise in the pavement keeps the vehicle settled, while braking or accelerating on top of it unsettles the suspension and costs grip.
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9. You are overtaking in a short passing lane on a two-lane road and it is about to end. What must you do?
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Answer A: Finish the pass and move back to the right before it ends
The added lane ends and the traffic returns to a single lane in each direction, so the pass has to be complete before the pavement runs out.
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10. What must you do before changing lanes, in addition to signaling and checking your mirrors?
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Answer D: Glance over your shoulder to check the blind spot the mirrors do not cover
Mirrors leave an area beside and behind the vehicle that they cannot show, so a quick head check is needed before the vehicle moves sideways.
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11. At 45 mph you look at a navigation screen for four seconds. Roughly how far do you travel unseeing?
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Answer D: About 260 feet
At 45 mph you cover roughly 66 feet a second, so four seconds on a screen is around 260 feet of road that you never looked at.
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12. How should tire pressure be checked and set?
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Answer B: When the tires are cold, set to the pressure specified by the vehicle manufacturer
Driving heats the air and raises the reading, and the sidewall number is a maximum rather than a recommendation, so check cold and use the figure on the vehicle placard or in the owner's manual.
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13. A large truck ahead of you swings toward the left just before turning right at an intersection. What should you do?
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Answer B: Stay back and never try to move into the gap between the truck and the curb
Long vehicles need extra room and often swing wide to complete a right turn, so the space that opens on their right closes again as the trailer sweeps through it.
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14. Along a highway the reference markers count upward as you travel. Where does the numbering normally begin?
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Answer C: At the southern or western edge of the state
Mileage numbering starts where the route enters the state from the south or the west, so rising numbers tell a driver which way they are heading.
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15. You are about to descend a long steep grade. How should you control your speed?
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Answer D: Select a lower gear before starting down and use the brakes in firm, brief applications
Engine braking in a lower gear carries most of the load down the grade, while continuous brake pressure overheats the brakes and reduces their effectiveness.
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16. You are in the right-hand of two left-turn lanes and the vehicle beside you starts to drift toward your lane during the turn. What should you do?
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Answer B: Slow slightly, keep to your own lane and give the other vehicle room
Drivers commonly drift wide in dual turn lanes, so hold your own line, ease off and leave space rather than racing or crowding the other vehicle.
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17. What is the Illinois school zone speed limit and when does it apply?
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Answer C: 20 miles per hour on school days between 6:30 a.m. and 4 p.m. when children are present and signs are posted
Illinois school zones are posted at 20 miles per hour and the limit applies on school days between 6:30 a.m. and 4 p.m. when children are present and the signs are posted.
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18. Halfway through a curve you realize you are going too fast. What is the best response?
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Answer C: Ease off the gas gently and look where you want to go
Easing off transfers a little weight to the front tires without upsetting the balance, and looking through the curve keeps your steering smooth.
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19. You have stopped at a stop sign, but a parked truck blocks your view along the cross street. What should you do?
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Answer A: Creep forward slowly and stop again where you can see
When something blocks the view, a second stop closer to the intersection is the only safe way to see, and it must come before your vehicle enters the traffic lane.
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20. Your engine stalls while you are driving in traffic. What is the correct response?
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Answer A: Shift to neutral, try to restart it, and steer and brake toward the side of the road
With the engine off, power steering and power brake assistance fade, so steering and braking take more effort but still work. Neutral lets you attempt a restart while you coast to safety.
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21. Is it a good idea to shift into neutral and coast down a long hill to save fuel?
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Answer B: No, you lose engine braking and some control of the vehicle
In neutral the engine cannot help slow the vehicle, so the brakes do all the work and can overheat. Stay in gear so the drivetrain helps hold your speed.
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22. On a wet road, how should a driver adjust after passing this sign?
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Answer B: Start braking earlier, because a slippery surface lengthens the stopping distance
A wet surface lengthens stopping distance, so the extra warning distance should be spent braking gently and early instead of late and hard.
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23. A sign with a green background and a white legend normally provides
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Answer A: directions, distances and destinations
Green is the background color of the guide sign series, which names routes and destinations and gives the distance to them.
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24. A child in the back seat unfastens a seat belt while you are on the freeway. What should you do?
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Answer A: Pull off safely and refasten the belt
Turning or reaching back takes your eyes and hands off a high speed task, so leave the freeway or use the shoulder only if there is no exit, then fix the belt.
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25. You come back to find that your parked car has rolled out into the street. What most likely went wrong?
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Answer C: The parking brake was not set and the wheels were not turned
The parking brake, a gear or park, and turned front wheels are three separate safeguards, and a runaway means at least the first two were missing.
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26. Which vehicle is most affected by a strong side wind?
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Answer D: A van or a car towing a tall trailer
Wind pushes against the side area of a vehicle, so tall boxy shapes and trailers are moved far more than low heavy ones.
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27. Which common non-prescription medicine is most likely to make a driver drowsy?
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Answer C: A cold or allergy remedy containing an antihistamine
Antihistamines in cold and allergy remedies are a leading cause of drowsiness behind the wheel, which is why the label carries a warning.
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28. 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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29. Someone stops drinking heavily at two in the morning and drives to work at eight. What is true?
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Answer A: They may still be impaired and over the limit
The body removes alcohol at a slow, fixed rate, so a heavy night can leave a driver impaired well into the next morning no matter how they feel.
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30. You are on an entrance ramp merging onto a freeway. Who has to give way?
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Answer B: You must yield and fit into a gap in the traffic already on the freeway
Traffic entering a highway must yield to traffic already on it. Use the acceleration lane to match speed and merge into a gap.
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31. What is the most common cause of rear-end collisions?
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Answer C: Following too closely to stop in time
A driver who leaves too little space has no room to perceive, react and brake when the vehicle ahead slows, which is why space management prevents rear-end crashes.
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32. You are using the parking brake to slow a vehicle whose brakes have failed. How should you apply it?
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Answer D: Gradually, holding the release so you can let it off if the rear slides
The parking brake works on two wheels only, so applying it hard can lock them and spin the vehicle. Keep the release held so you can back it off instantly.
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33. 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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34. A person using a wheelchair is waiting to cross at a corner ahead. How should you treat that person?
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Answer B: As a pedestrian with the right of way at the crossing
A wheelchair or a mobility scooter user has the rights of a pedestrian, so yield the whole crossing and wait until the crossing is finished.
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35. Why does a heavier vehicle need more room to stop than a light one from the same speed?
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Answer B: Because there is more mass in motion for the tires to slow down
More mass means more energy at the same speed, and the brakes and tires need more distance to get rid of it.