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Idaho Driver’s Knowledge Tests & License Practice Tests

This Practice Test
  Number of questions on each practice test: 25
  Question pool: 1,000+
  This is a randomized practice test



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#1. When driving in a fog, you should always:

Slow down. Use your low beam headlights, not your high beams. Keep a consistent distance between you and the car in front of you. If you are involved in a collision, get your car off the road as quickly as possible.


#2. Exercising your eyes as you drive on long trips:

On long trips, exercise your eyes as you drive. Freeway drivers often suffer highway hypnosis – drowsiness brought on by monotony and the drone of wind and tires. Keep shifting your eyes from one area of the roadway to another and focus them on various objects – near and far, left and right. Even reading road signs can help you stay awake.


#3. This hand signal means:

Left turn – left arm extended horizontally out of open window.


#4. What does this sign mean?

School bus stop ahead.

Watch for children. Be prepared to stop. You are nearing an area where a stopped school bus will pick up or discharge passengers.


#5. If a dashed yellow line is marked through an intersection:

If the dashed yellow line is marked through an intersection, you may pass vehicles in the intersection. Otherwise, no passing is allowed in intersection.


#6. What should you do when overtaking a motorcycle?

Never move into the same lane space as a motorcycle, even if the lane is wide and the motorcyclist is riding to one side. Crowding into a lane with a motorcycle is illegal and dangerous. Good motorcycle riders are constantly changing positions within the lane so they can see and be seen, and to avoid objects in the road.


#7. After stopping at a traffic signal with a solid red light, you:

A steady red circular indication means stop. Come to a complete stop before you reach the stop line, crosswalk, or intersection. Remain stopped until the light changes and cross traffic clears the intersection.

You may turn right after stopping and yielding to cross traffic except where posted otherwise. You may turn left into a one-way street after stopping and yielding to cross traffic unless posted as no-left turns allowed.


#8. When are you allowed to drive slower than a minimum speed limit?

Whenever you are driving, you need to think about how your speed affects other traffic (including pedestrians and bicycle riders). You also need to think about the road surface (the presence of ice, snow, rain, or rough pavement), hazards at intersections, visibility, oncoming traffic, curves, and any other conditions that may affect safety.

Remember, Idaho law has a basic rule requiring you to drive at a speed that is reasonable and prudent at all times. If you drive too fast for existing conditions – even if you are driving under the posted speed limit – you are violating the basic rule law.


#9. The best way to avoid last minute moves when driving is to:

To be a defensive driver, you have to see what is going on. Avoid a fixed, straight-ahead stare that may let you drift off in daydreams. Keep your eyes moving and learn to read the road. Look ahead, to the sides, and behind.


#10. When another vehicle is in danger of hitting you, you should:

If you are threatened with a head-on collision or a vehicle is drifting toward you, try to warn the other driver by flashing your lights or honking your horn.


#11. When are you required to stop at a railroad crossing?

By law, you must stop when:

  • There is a stop sign.
  • A warning signal tells you a train is approaching.
  • A crossing gate is lowered.
  • A flag person signals the approach of a train.
  • A railroad train emits a signal, indicating that the train is an immediate hazard.
  • An approaching railroad train is plainly visible and is in hazardous proximity to such crossing.

#12. Which of the following contribute to accidents in work zones?

Following too closely, speeding, inattentive driving, failing to yield the right of way, and improper lane changes contribute to accidents in work zones.


#13. You should never attempt to overtake a bicyclist:

If you are preparing for a right turn and a bicyclist is ahead of you, do not assume that you can beat the bicycle to the turn. Misjudgment can result in a broadside crash called the right hook. Avoid right-hook crashes by slowing and remaining behind the bicyclist until he rides past the point where you will turn. On streets with bike lanes, remember that you are turning across a dedicated travel lane. Always look for and expect bicyclists.


#14. While you are enrolled in a driver's training program, the Driver Training/Supervised Instruction Permit is valid:

While you are enrolled in a driver’s training program, the Driver Training/Supervised Instruction Permit is valid only to operate a vehicle with a driver training instructor.

The permit expires 5 days after the permit holder’s 18th birthday. The permit expiration for people 17 1/2 years of age and older is 180 days.


#15. If you hit an unattended vehicle and are unable to find the owner, you must:

You must make a reasonable effort to find the owner of an unattended vehicle or other property damaged in an accident in which you are involved. If the owner cannot be located, leave a note telling about the accident, your name, address, and license plate number. You must also notify police if the damage was more than $1,500 or someone was injured.


#16. When you merge onto a freeway, you:

Once on the ramp, check traffic around you and on the freeway. Signal and begin looking over your left shoulder for a gap in the traffic large enough for your vehicle to fit into without crowding anyone.

As the ramp straightens, accelerate to the speed of the freeway traffic so you can blend in smoothly. Remember, you must yield to the traffic already on the highway.


#17. If you see this sign in front of you, it tells you that:

The Do Not Enter sign tells you that the road or street ahead is for one-way traffic traveling in the opposite direction. You may not enter this section of roadway from the direction you are traveling.


#18. When you leave your vehicle unattended, you must:

When you leave your car, secure it. Turn off the engine. Set the parking brake and, if you have an automatic transmission, shift to park. If you have a manual transmission, leave the car in gear. Remove the keys and lock the door.


#19. After passing this sign you reach an intersection without signs or signals. What must you do?

T-intersection: You are approaching a 3-way (T) intersection and will have to turn either to the right or the left. You must stop and yield to drivers approaching from the other two directions.


#20. Which is true about changing lanes when making a left turn at an intersection?

Vehicles turning left must remain in their lane of travel until after completing the turn.


#21. When alcohol is consumed with food:

Food can slow down the absorption of alcohol. This delaying action prevents large amounts of alcohol from going to your head immediately. But eating won’t prevent the absorption of alcohol into your system.

Alcohol passes directly through your stomach and small intestine into the bloodstream, where it flows to all parts of your body. On an empty stomach this process takes place almost immediately. On a full stomach, it takes somewhat longer.


#22. Which road signs have a green background?

Guide signs are either white on green for directional and distance, white on blue for motorist services, or white on brown for cultural, historical, or scenic points of interest.


#23. Skidding is mainly caused by

Skids are mainly caused by drivers traveling too fast for conditions. By judging weather and road conditions and knowing where skids are likely to occur, such as on curves or bridges, most skids can be avoided.

Adjust your speed, as necessary. When you must stop, slow down in advance. Avoid fast or sudden turns.


#24. A child must be secured in an appropriate child-restraint system when:

Idaho law requires anyone carrying children 6 years of age or younger in a non-commercial motor vehicle to properly protect children in approved child car safety seats.

The law applies to cars manufactured with car safety belts after January 1, 1966.


#25. When making any left turn, you must:

When making a left turn, you must always yield to oncoming traffic unless directed otherwise by a traffic-control device.

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Facts about Your Idaho Driver’s Knowledge Tests

DMV Knowledge Test for Learner’s Permit and Driver’s License
  Number of questions on exam: 40 questions
  Passing score: 85 percent
  Correct answers to pass: 34
  Allotted time to complete test: 25 minutes
  Wait time before retest: 3 days (Fee is required for each new test)

This Idaho Practice Test

This practice test is designed to help you study for and pass the knowledge examination for a Class D (Non-Commercial) license or instruction permit in Idaho.

It has 25 questions drawn from a large bank of DMV questions and answers. Each one is specific for the traffic laws in the state of Idaho. It is, however, shorter than the real knowledge test. It is recommended that you take at least a handful of tests to cover all items in the driver’s manual.

After each question, you will be shown the correct answer. In case your answer is incorrect, there is also a brief explanation to the correct answer. Use the explanation to look up more information in the Idaho Driver’s Manual.

Remember, the purpose of the real examination and this Idaho practice test is to check your knowledge of Idaho traffic laws, highway signs by shape and symbol, traffic signals, pavement markings, and equipment required on motor vehicles.

It is not designed to be a cheat sheet and it may not be inclusive of all questions asked on the official knowledge test. Be sure to always study the Idaho Driver’s Manual before taking the official test.

The practice test, however, help you prepare as much as possible and predict how likely you are to pass the real knowledge examination.

Idaho Driver's Handbook

1   Get the Driver’s Manual

Your first step is to get the latest version of the Driver’s Handbook from You should use the practice tests to verify your progress only after studying the manual. Do not use the practice test as a replacement for the manual.

You can find all questions and answers you need to pass the written test for a class D license or instruction permit in the Driver’s Manual. It remains your best friend when studying for your first instruction permit.

We help you pass your Idaho Knowledge Test

Aim for a High Score on Each Practice Test

The number of questions on the real test in Idaho is 40 and the passing score is 85%, which is higher than in many other states. Only Maryland and Virginia have higher passing scores

You must correctly answer 34 out of the 40 questions, which means you can only miss 6 of them. In combination with a poor designed test and a high passing score, Idaho knowledge test can be one of the hardest to pass, especially if you haven’t completed a classroom course.

This is why you should aim for the highest possible score on the practice tests. Take as many tests as you need, as often as you like.

On each test, you should make sure you truly understand why an answer is correct and why other options are incorrect.

Learn more about Risky Study Tactics .


Known Issues with the Idaho Knowledge Test

Idaho DMV tend to use four choices to each test questions. It is usually difficult to develop more than three plausible alternatives on a DMV test, which means that the fourth choice can be nonsense. This makes the test longer without making it better. On a lengthy test, it can be easy to skip reading all of the choices carefully enough.

Idaho DMV also has a disclaimer at the beginning of the test saying that there may be more than one correct answer and that you must select the best answer.

This is due to the fact that they still use “All of the above” as one alternative. In this type of question, all of the alternatives can be correct.

A nervous test taker may identify the first alternative as correct and read no further.

The same hold true for “Both of the above”.

Remember to always read through all choices. Often, all of the choices are actually correct – but not always!

You may also see “None of the above” as the last choice. This is also considered a bad testing design since it doesn’t check if you know what the correct answer is.

Even if it is less common, you may see a negative question that contains the word not or never. With such a question you must look for an incorrect statement. It is easy to forget this and pick the correct statement instead.

You can overcome these flaws by not rushing through the test, being alert, and make sure you read everything.

More about the Idaho Knowledge Test

The test is available in English, Arabic, Chinese, Farsi, French, Korean, Russian, Serbo-Croatian, Spanish, Vietnamese and ASL (American Sign Language).

It is a closed-book test, which means that you cannot use any kind aids (written, audio, or electronic) while taking the exam.

If you fail the knowledge examination, you must wait at least three days before you can take it again. A new fee is required each time you attempt the test.

Who Must Take the Idaho Knowledge Test?

All new drivers applying for an original driver’s license must pass the knowledge exam.

If you are under 17 years, you must successfully complete a driver training program and comply with the requirements of the Graduated Driver Licensing (GDL) Program. After the supervised instruction period, you must take and pass the written knowledge test before receiving your driver’s license.

If you are 17 years or older, the GDL requirements don’t apply. You start the application process by taking the written knowledge test and a vision screening at a county sheriff’s office.

When transferring from another state, U.S. Territory, or the District of Columbia, you must pass a Class D written knowledge test, even if you have been licensed in Idaho before. Unlike many other states, the written DMV test is not waived for drivers who hold an out-of-state driver’s license.

You must also pass all tests if you hold a foreign driver’s license.

If you let your Idaho Driver’s license expire for 25 months or more, you must also take the knowledge test again.

Idaho Graduated Driver’s License (GDL) program

Anyone under 17 years who applies for their first driver’s license in Idaho must successfully complete an approved driver’s training program and comply with the requirements of the GDL Program.

Unlike other states, Idaho does not require you to pass the written test before issuing a permit under this program (the test comes later).

The first permits are known as the Driver Training (DT) permit and the Supervised Instruction Permit (SIP). They allow anyone at least 14 1/2 years and under 17 years of age to attend any public school or private driver’s training program. You must have your DT permit before taking any DT class.

The training program consists of a required 1,800 minutes (30 hours) of classroom instruction, 360 minutes (6 hours) of in-car observation in a DT car, and 360 minutes (6 hours) of behind the wheel driving with a DT instructor.

While you are enrolled in a training class, the DT permit allows you to drive only while supervised by a training instructor. When you have successfully completed the program, the instructor will release the permit and it know becomes a Supervised Instruction Permit.

In this next phase, you can practice your driving skills when accompanied by any licensed driver who is at least 21 years and who is occupying the front seat beside you (no other passengers are allowed in the front seat).

While You Hold an Idaho Supervised Instruction Permit

You cannot drive alone. You must always be supervised by an adult at least 21 years with a valid driver’s license.

All passengers must wear seat belts or child restraints. Only the supervising driver can sit beside you in the front seat.

You must observe all laws regarding alcohol and other intoxicating substances.

You must complete a minimum 6-month, violation-free supervised instruction period and log at least 50 hours of driving practice. 10 of these 50 hours must be at night.

If you are convicted of violating any traffic laws while you practice driving under this program, the SIP will be canceled. After a cancellation, you must reapply for a new SIP. The 6-month period of supervised driving starts over again.

Idaho Driver's License

Only after meeting all of these requirements under GDL will you be allowed to take the Idaho knowledge test.

If you pass the knowledge test, you can schedule your road skills test.

After passing all tests, DMV will issue an Idaho Driver’s License.

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