Idaho ITD Permit Practice Test 33
- Questions40
- Correct to pass34
- Passing score85%
- Minimum age15 years
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1. After moving to Idaho, how long do you have to apply for an Idaho driver's license?
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Answer C: 30 days from establishing residency
New Idaho residents must apply for an Idaho driver's license within 30 days of residing in the state, whether or not the out-of-state license has expired.
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2. How should your following distance change in heavy rain?
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Answer D: It should be increased well beyond what you use on dry pavement
Wet pavement lengthens stopping distance and rain cuts visibility at the same time, so a larger gap gives you the extra seconds needed to see a problem and stop for it.
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3. At what age may an Idaho resident obtain a Driver Training Permit to enroll in a driver training program?
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Answer A: 14 years and six months
A Driver Training Permit allows anyone from 14 and a half up to 17 years of age to attend an approved public or private driver training program in Idaho.
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4. A vehicle ahead of you displays a reflective orange triangle on its rear. What does that emblem tell you?
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Answer B: The vehicle is built to travel at 25 mph or less
The orange triangle is the slow moving vehicle emblem used on farm and construction equipment designed for 25 mph or less, warning you that you are closing on it much faster than it appears.
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5. How does a full load of passengers and luggage affect your braking?
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Answer B: It lengthens the stopping distance, so you should brake earlier
More weight means more energy to get rid of, so a loaded vehicle takes longer to stop and needs earlier, gentler braking.
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6. The queue for an exit ramp has backed up into the right lane of the highway. What should you do if you want that exit?
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Answer B: Join the back of the queue in the lane instead of cutting in later
Passing a queue and forcing in at the front stops the whole line, and using the shoulder puts you where broken-down vehicles are expected to be.
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7. 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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8. You are on an entrance ramp joining a busy freeway. What should you do with your speed in the acceleration lane?
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Answer D: Build it up to about the speed of the traffic you are joining
Merging works when your speed matches the traffic stream, because a large speed difference forces the drivers already on the freeway to brake or swerve.
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9. A regulatory message is normally carried on a sign whose shape is
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Answer A: a rectangle standing taller than it is wide
Regulatory signs that state a law, such as speed limits and turn restrictions, use a vertical rectangle with a black legend on a white background.
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10. Which of these makes you unpredictable to other drivers?
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Answer B: Changing lanes suddenly without signaling, to save a moment
An unsignalled, sudden lane change gives nobody time to react and is a common cause of sideswipe collisions.
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11. You have loaded the trunk heavily. Why might oncoming drivers flash their lights at you at night?
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Answer D: The rear sits lower, so your headlights point higher and dazzle them
Weight in the back tips the vehicle nose up and lifts the beam pattern, so low beams shine into the eyes of drivers coming the other way.
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12. The signal turns green as you approach an intersection. What is the safest practice?
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Answer B: Look left, then right, then left again, and make sure the intersection is clear before entering
A green light gives permission but does not guarantee the intersection is empty, and a quick scan catches a vehicle running the red or a pedestrian still crossing.
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13. During the reversing part of a three-point turn, where should you be looking?
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Answer C: Over your shoulder through the rear window, glancing both ways
You look through the rear window in the direction the car is moving, checking both ways for traffic and people, because mirrors and cameras leave blind areas.
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14. Why are motorcycles so often missed by other drivers?
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Answer C: Their narrow shape is easily hidden in traffic
A motorcycle presents a narrow outline that disappears behind pillars, mirrors and other vehicles, and it is harder to judge its speed and distance.
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15. Two people drink the same amount of alcohol at the same time. Why might their blood alcohol concentrations differ?
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Answer C: Body weight, gender and food in the stomach affect the concentration
Smaller people and, on average, women reach higher concentrations from the same amount of alcohol, and an empty stomach speeds absorption. Counting drinks alone does not tell you your level.
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16. A wasp flies in through the open window while you are driving. What is the safest reaction?
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Answer B: Stay calm, slow down and stop somewhere safe
Far more crashes come from the driver's reaction to an insect than from the insect, so keep your eyes forward, slow down and deal with it stopped.
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17. What is true about an airbag once it has inflated in a crash?
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Answer B: It must be replaced by a technician before the car is driven any further
An airbag is a single use device, and the module and often the belts must be replaced before the vehicle protects anyone again.
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18. 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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19. What is lane splitting?
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Answer B: A motorcycle riding between two lanes of traffic moving the same way
Lane splitting means riding along the line between two lanes of traffic going in the same direction rather than staying within a lane.
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20. When must a crash be reported to police in Idaho?
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Answer A: When someone is injured or property damage is more than $1,500
Idaho requires drivers to report to police any crash involving injury or more than $1,500 in property damage, and the same threshold applies after striking an unattended vehicle.
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21. You enter a corner faster than the turn can be taken. What is the most likely result?
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Answer A: The vehicle runs wide and may cross into another lane
Excess speed uses up the available grip, so the vehicle follows a wider arc than intended and drifts out of its lane.
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22. You are traveling at 55 mph and see a vehicle ahead moving at about 15 mph. What is the hazard?
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Answer A: You reach it far sooner than you expect
At a 40 mph difference you cover the gap in a few seconds, which is why drivers strike slow vehicles they saw in plenty of time.
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23. The only person offering you a ride home has been drinking. What should you do?
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Answer B: Do not get in; find another way home
A passenger in an impaired driver's vehicle shares all of the risk and can do nothing about it from the seat, so the only safe answer is another ride.
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24. How many scored errors may an applicant make on the Idaho Class D skills test and still pass?
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Answer D: Twelve or fewer errors
Idaho scores the Class D skills test against a list of driving skills and treats twelve or fewer errors as a passing result, provided no critical driving error occurs.
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25. Alcohol is classified as which kind of drug?
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Answer B: A depressant that slows the central nervous system
As a depressant, alcohol slows the brain and nervous system, which lengthens reaction time and dulls the coordination that driving depends on.
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26. You turn the wheel but the front of the vehicle keeps sliding straight ahead on a slippery road. What should you do?
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Answer C: Ease off the accelerator and reduce the steering angle until the front tires grip again
A front-wheel skid means the tires are asking for more grip than the surface can give. Less speed and less steering angle let them regain traction.
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27. Your vehicle has stalled on railroad tracks and no train is in sight. After getting everyone away, whom should you call first?
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Answer B: The railroad emergency number posted on the blue sign at the crossing, giving the crossing number
Every public crossing has a blue emergency notification sign with a phone number and a crossing identification number. That call lets the railroad stop or slow trains before they reach you.
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28. Where should you be looking as you steer through a turn?
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Answer C: Toward the point on the new road where you want to end up
Drivers steer toward what they look at, so looking through the turn to where you want to go keeps the path smooth and accurate.
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29. Why should you dim the instrument panel and keep interior lights off when driving at night?
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Answer C: Bright light inside the vehicle reduces your ability to see the dark road ahead
Your eyes adapt to the brightest light they see. A bright cabin keeps them from adjusting to the darkness outside and creates reflections on the windshield.
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30. A school bus ahead of you has its red lights flashing and its stop arm extended. What are you required to do?
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Answer A: Stop and stay stopped until the lights stop flashing and the bus starts moving
Flashing red lights and an extended stop arm mean children are getting on or off, so traffic must stop and wait until the bus withdraws the signals and moves again.
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31. Some toll facilities use signs and markings with a purple background or a purple stripe. What do they identify?
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Answer D: Lanes reserved for vehicles with an electronic toll account
Purple is assigned to lanes and ramps restricted to vehicles with a registered electronic toll collection account, so drivers without one must stay out.
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32. You stop behind another vehicle at a traffic light. How much space should you leave?
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Answer D: Enough to see where its rear tires touch the pavement
Seeing the rear tires on the road leaves room to steer around the vehicle if it stalls, and gives a cushion if you are struck from behind.
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33. The trailer you are towing begins to sway from side to side at highway speed. What should you do?
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Answer D: Ease off the accelerator, hold the wheel steady and let the speed drop
Sway grows with speed and with sudden inputs. Reducing speed gently while keeping the steering steady lets the trailer settle behind you.
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34. What are painted curb markings mainly used for?
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Answer D: Conveying parking and stopping regulations
Colored curbs tell drivers where waiting or parking is restricted, and because the exact color meanings are set locally a driver should also read the posted signs.
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35. Idaho's ban on reading, writing and sending written communication while driving does not apply in which case?
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Answer C: Using a hands-free device without the use of either hand
The Idaho handbook states that the text messaging prohibition does not apply to hands-free devices operated without the use of either hand.
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36. A flagger in a work zone turns a paddle so that the red octagonal face reading STOP is toward you. What must you do?
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Answer A: Stop completely and wait for the flagger to signal you forward
The STOP face of a flagger paddle requires a complete stop, and you may move again only when the flagger directs you to.
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37. A large X with the letters R and R beside it is painted across your lane. What does it mean?
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Answer A: A railroad crossing lies a short distance ahead
The pavement marking repeats the advance warning for a grade crossing, and it is used on paved approaches where speeds are high or where gates are installed.
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38. How many points in any 12-month period trigger a 30-day suspension in Idaho?
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Answer C: 12 to 17 points
Idaho sends a warning letter at 8 to 11 points in 12 months and imposes a 30-day suspension at 12 to 17 points in the same period.
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39. Cones and drums mark a shifted lane through a work zone. What should you do?
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Answer A: Follow the path that they mark and stay inside it
Channelizing devices define the temporary travel path, and the space on the other side of them belongs to the workers.
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40. A deer crosses the road in front of you and disappears into the trees. What should you expect?
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Answer B: That other deer are likely to follow it across the very same stretch of road
Deer usually move in groups, so one crossing the road is a warning that more may follow.