Illinois SOS Permit Practice Test 14
- Questions35
- Correct to pass28
- Passing score80%
- Minimum age15 years
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1. Illinois generally requires hands-free phone use while driving. Besides reporting an emergency, in what other situation may a driver use a handheld phone that is not hands-free?
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Answer A: While parked on the shoulder of the roadway, or stopped in traffic that is obstructed with the vehicle in neutral or park
Illinois law permits handheld, non-hands-free phone use only to report an emergency, while parked on the shoulder, or while stopped in traffic that is obstructed with the vehicle in neutral or park.
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2. Why would this sign be installed on an approach?
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Answer B: Because the signal cannot be seen from far enough back for a driver to react in time
Advance notice of a signal is used where a crest, a curve, trees or a building keep the signal heads out of view until a driver is already too close to stop comfortably.
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3. Once the Secretary of State issues a Monitoring Device Driving Permit to a first-time DUI offender, how long does the offender have to install a BAIID in every vehicle they intend to drive?
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Answer C: 14 days
An Illinois offender issued a Monitoring Device Driving Permit has 14 days to install a Breath Alcohol Ignition Interlock Device in every vehicle they plan to drive during the suspension.
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4. You are passing a large truck on an open highway in a strong crosswind. What should you expect?
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Answer A: A push toward the truck, then a push the other way as you clear it
The truck shelters you as you go by and then releases you into the full gust, so the load on the steering changes twice during the pass.
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5. You turn left onto a road that has a center two-way left-turn lane. In which lane should you be traveling once the turn is finished?
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Answer D: The first through lane to the right of the center turn lane
The shared center lane is only for turning movements, so even where a state lets you pause in it to merge you must end up in the first ordinary travel lane beside it.
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6. What is the driver expected to do after passing this sign?
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Answer A: Begin slowing so that a complete stop can be made at the intersection ahead
It is used where the control at the intersection stays hidden until late, so braking should begin here rather than at the stop line.
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7. A small signal face beside a bikeway shows red, yellow and green lenses that each carry a bicycle symbol. Whom does it control?
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Answer C: Bicyclists using that crossing or bikeway
A bicycle signal face governs bicycle movements only, and people on foot at the same corner still follow the pedestrian signal.
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8. A shared-use path crosses the road ahead at a marked crossing and people are already crossing on it. What should you do?
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Answer C: Yield and let them finish crossing the road
People already crossing at a marked crossing have the right of way, and a path crossing is a crossing of the roadway like any other.
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9. At an intersection where turning on a red arrow is not permitted, the signal shows a red left arrow next to a steady green ball. What may you do?
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Answer D: Go straight or turn right if permitted, but not left
An arrow controls only the movement it points to, so here the red arrow stops the left turn while the green ball still allows the other movements.
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10. Your vehicle has daytime running lights. Why should you still switch on the headlights at dusk?
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Answer B: Daytime running lights usually do not light the tail lights, so you are hard to see from behind
On many vehicles the daytime running lights illuminate only the front. Without the headlight switch on, the rear of the vehicle stays dark and the dash may still look lit.
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11. A driver's destination lies along the street to the right, and this sign stands at that corner. How should the driver reach it?
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Answer D: By going on and using a later intersection where turning is allowed
When a movement is barred at one corner the driver has to reroute, normally by continuing and coming back to the destination from a permitted approach.
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12. Your vehicle leaves the road and enters deep water. What gives you the best chance of escape?
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Answer B: Release your seat belt and get out through a window as quickly as possible
Water pressure holds the doors shut, so a window is the reliable exit and the first seconds after entry are the best time to use it.
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13. You feel drowsy, so you open a window and turn the radio up. What does that achieve?
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Answer B: Very little, because the drowsiness comes back
Cold air and loud music are not sleep, so the alerting effect lasts a minute or two and the driver is soon just as sleepy and closer to a lapse.
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14. You are stopped at a stop sign waiting to turn onto a highway where traffic moves at 55 mph. How should you choose your gap?
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Answer A: Wait for a much larger gap than the one you would accept on a city street
Fast traffic covers ground while you are still accelerating, so the gap that feels adequate at 25 mph is dangerously short at highway speed.
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15. You are passing a tractor-trailer on a wet freeway and its wheels throw heavy spray. What is the best technique?
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Answer B: Increase your wipers and pass steadily without hesitating
Spray blinds you for as long as you stay beside the truck, so prepare the wipers first and then spend as little time in the spray as possible.
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16. How should speed and following distance be adjusted beyond this sign?
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Answer D: Cut speed and leave a longer gap, because traffic can stop without warning
Traffic in these areas stops and starts unexpectedly and there is little room to steer around a problem, so extra space is what prevents a rear-end collision.
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17. In the code that governs pavement markings, what does a double line stand for?
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Answer B: A maximum restriction
The marking code is consistent: a double line means the strongest restriction, a solid line discourages or forbids crossing, and a broken line is permissive.
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18. Why does a long downhill grade lengthen the distance you need to stop?
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Answer C: Because gravity keeps pulling the vehicle forward as you brake
On a downgrade gravity works with the vehicle and against the brakes, so the same speed needs noticeably more distance than it would on level ground.
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19. You are driving through a long curve on a road with two lanes in your direction. What is correct?
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Answer A: Stay within your own lane all the way through, adjusting speed before you enter
Wandering out of your lane in a curve puts you into the path of a vehicle you cannot see, and the slowing belongs before the curve rather than in it.
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20. The sign over the leftmost lane reads LEFT LANE MUST TURN LEFT. You are in that lane and want to go straight. What should you do?
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Answer C: Move out of the lane before the intersection if it is safe
A mandatory movement lane control sign makes the turn compulsory for that lane, so a driver who wants another movement must change lanes in advance.
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21. If a school bus is stopped within 100 feet of a railroad crossing while checking for trains, what does Illinois law say about passing it from the rear?
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Answer A: Driving over the center line to pass is prohibited within that 100-foot distance
Illinois law prohibits driving over the center line to pass a school bus from the rear when the bus is within 100 feet of a railroad crossing, since state law requires the bus to stop at every crossing.
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22. A stop line is painted across the pavement at this sign. Where must the vehicle come to rest?
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Answer A: Behind the stop line, with no part of the vehicle across it
The vehicle must halt behind the stop line; where no line is painted the driver stops before the crosswalk, and where there is neither, before entering the intersection.
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23. You park on level ground in a lot. Where should the front wheels be pointing?
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Answer C: Straight ahead, so the car would not veer if it moved
On the level the wheels go straight so that the car stays in its own space, and so that a shunt from behind does not send it across a lane.
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24. The stability control warning light flashes while you are driving through a curve. What does it mean?
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Answer A: The system is actively working to keep the vehicle under control, so slow down
A flashing stability control light means the system is braking individual wheels because you are near the limit of grip. Ease off and drive more gently.
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25. Why should the washer reservoir hold proper washer fluid rather than plain water in winter?
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Answer D: Water freezes and it leaves you with no way at all to clean the glass
Washer fluid contains antifreeze, so it still works in the cold, whereas water freezes in the reservoir and the lines.
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26. How often should the spare tire be checked?
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Answer C: Regularly, because a spare loses pressure while it sits unused
Spares lose air slowly over months, and a flat spare is useless at the moment you need it.
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27. During the first 12 months of the Illinois Initial Licensing Phase, how many passengers may a teen driver carry?
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Answer D: One person under age 20, unless the extra passengers are siblings, stepsiblings, children or stepchildren of the driver
For the first 12 months of licensing, or until the driver turns 18, Illinois limits the driver to one passenger under age 20 unless the additional passengers are siblings, stepsiblings, children or stepchildren.
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28. Compared with dry pavement, how much room does a vehicle need to stop on packed snow?
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Answer D: Several times as much
Grip on packed snow is a fraction of that on dry pavement, so stopping distance grows several times over. Antilock brakes help you steer, not stop shorter.
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29. About how much alcohol can the body eliminate per hour?
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Answer A: About one standard drink
The liver removes alcohol at a nearly fixed rate of roughly one standard drink per hour. Drinking faster than that raises the blood alcohol level, and nothing speeds the process.
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30. What must a driver be prepared to do at the point this sign refers to?
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Answer D: Turn left or right, because the road being traveled ends there
The road ends at another roadway, so the driver must slow, give way to traffic on the through road and turn in one direction or the other.
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31. Under Illinois' basic speed law, besides curves and hill crests, in which other situations must a driver reduce speed even without a posted sign lowering the limit?
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Answer B: When approaching and crossing an intersection, or traveling on a narrow or winding roadway
Illinois' basic speed law also requires reduced speed when approaching and crossing an intersection and when traveling on a narrow or winding roadway.
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32. Your car has side curtain airbags. What should you avoid doing?
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Answer B: Resting your head against the window or the door pillar
A side airbag deploys from the pillar or roof rail, so a head leaning against that area is directly in its path.
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33. A driver is following you far too closely and you have a turn coming up. How should you slow down for it?
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Answer B: Signal early and slow gradually well before the turn
Early signals and gentle braking give a tailgater the time and distance they have failed to leave for themselves.
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34. A sign shows a lane joining from the right with no merge required. What does that mean?
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Answer B: The joining traffic gets its own new lane, so nobody has to merge
An added lane means the roadway gains a lane at that point, so entering vehicles have somewhere to go without anyone changing lanes.
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35. Which facility does this sign direct a traveler toward?
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Answer B: A hospital offering emergency care
This is the standard marker for medical care, used to lead a traveler to a hospital where emergency treatment is available.