Idaho permit test numbers to know
Distances, speeds, limits, fines and deadlines are the questions people miss most, because they have to be memorized. Here are 63 Idaho numbers, grouped and cited, with a free quiz and flashcards to lock them in.
Numbers quiz
12 questions a round from the 47 number questions in our Idaho bank. Questions you miss come back more often in later rounds.
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Numbers flashcards
47 cards: the question on the front, the number and its source on the back. Swipe right if you knew it.
Each deck starts with 20 free cards. Swipe right if you knew it, left to see it again.
See 3 of the cards
Alcohol & drugs
You fail an evidentiary alcohol test for the first time in Idaho. What is the administrative license suspension?
90 days, with no driving at all for the first 30 days
For a first test failure, ITD suspends your license for 90 days, and for the first 30 days you have absolutely no driving privileges.
Fines, points & penalties
Under the Idaho point system, how many points in any 12 months lead to a 30-day suspension?
12 to 17 points
Idaho's point table is: 8 to 11 points in 12 months, warning letter; 12 to 17 in 12 months, 30-day suspension; 18 to 23 in 24 months, 90 days; 24 or more in 36 months, 6 months.
Speed limits
You are driving a car, not towing anything, on a two-lane highway posted at 55 mph. Outside any work zone, you pass a truck going 45. How much over the limit may you go while passing?
Up to 15 mph, then slow back to the limit
In a passenger vehicle, motorcycle or pickup not towing, you may exceed the limit by up to 15 mph to pass a slower vehicle on a two-lane road posted 55 mph or higher.
Every Idaho number, by topic
Official test facts and Idaho laws come first in each group, then the numbers from our handbook questions. Tap a source to read the exact words it comes from.
Alcohol & drugs
12 numbers
| Number | What it’s about | Source |
|---|---|---|
| 0.08% | Legal BAC limit for adult drivers | legislature.idaho.govQuoteor who has an alcohol concentration of 0.08, as defined in subsection (4) of this section, or more, as shown by analysis of his blood, urine, or breath, to drive or be in actual physical control of a motor vehicle within this state |
| 0.02% | BAC limit for drivers under 21 | legislature.idaho.govQuoteIt is unlawful for any person under the age of twenty-one (21) years who has an alcohol concentration of at least 0.02 but less than 0.08 |
| 0.04% | BAC limit in a commercial vehicle | legislature.idaho.govQuoteor who has an alcohol concentration of 0.04 or higher but less than 0.08, as defined in subsection (4) of this section, as shown by analysis of his blood, urine, or breath, to drive or be in actual physical control of a commercial motor vehicle |
| 1 year | Drunk driving (DUI)Ignition interlock for 1 year after the suspension | legislature.idaho.govQuoteIt is unlawful for any person under the age of twenty-one (21) years who has an alcohol concentration of at least 0.02 but less than 0.08 |
| 90-day, 30 days | Drunk driving (DUI)Separately, a failed test brings a 90-day administrative suspension (no driving for the first 30 days) | itd.idaho.govQuoteFor a first failure, driving privileges are suspended for a period of ninety (90) days with absolutely no driving privileges during the first thirty (30) days of that ninety (90) day suspension. |
| $250 | Drunk driving (DUI)$250 civil penalty | legislature.idaho.govQuoteHe shall be fined a civil penalty of two hundred fifty dollars ($250); |
| 1 year, 2 years, 10 years | Drunk driving (DUI)License suspended with absolutely no driving privileges for 1 year (first refusal) or 2 years (second within 10 years) | legislature.idaho.govQuotesuspend the defendant’s driving privileges for one (1) year for a first refusal and two (2) years for a second refusal within ten (10) years, during which time he shall have absolutely no driving privileges of any kind |
| 90 days, 30 days | You fail an evidentiary alcohol test for the first time in Idaho. What is the administrative license suspension?Answer: 90 days, with no driving at all for the first 30 days | Idaho Driver's Handbook, page 126QuoteFor a first failure, your driving privileges will be suspended for a period of ninety (90) days. You will have absolutely no driving privileges during the first thirty (30) days |
| 7 days | After receiving a Notice of Suspension for failing an alcohol test in Idaho, how long do you have to request an administrative hearing?Answer: 7 days from the date on the notice | Idaho Driver's Handbook, page 125QuoteYou have the right to request an administrative hearing on the suspension within seven (7) days of the date on the notice of suspension |
| $250 | Under Idaho's implied consent law, what happens if you refuse an officer's request for a BAC or drug test?Answer: A $250 civil penalty and a license suspension | Idaho Driver's Handbook, page 126QuoteIf you refuse to take the test when requested to do so by a law enforcement officer, you are subject to a driver’s license suspension and a civil penalty of $250.00 |
| two-year | What penalty does Idaho impose for a second refusal of an evidentiary test within 10 years?Answer: A two-year absolute suspension | Idaho Driver's Handbook, page 127QuoteA second refusal within 10 years will result in a two-year absolute suspension. |
| $1,000 | What is the maximum fine for a first DUI conviction in Idaho?Answer: $1,000 | Idaho Driver's Handbook, page 132QuoteFor a first conviction: Up to six months in jail; up to a $1,000 fine; and mandatory driver’s license suspension of at least 90 days and up to 180 days |
Fines, points & penalties
8 numbers
| Number | What it’s about | Source |
|---|---|---|
| $10 | Seat beltsFine $10, no points | legislature.idaho.govQuoteA person issued a citation pursuant to this subsection shall be subject to a fine of ten dollars ($10.00). |
| $300 | School busesFirst offense: $300 infraction | legislature.idaho.govQuoteAny person found guilty of violating the provisions of this subsection for the first time shall be guilty of an infraction punishable by a fine of three hundred dollars ($300). |
| $75 | Speed limits: School zonesThe posted school zone limit applies (minimum $75 fine) | legislature.idaho.govQuoteSeventy-five (75) miles per hour on interstate highways, unless otherwise posted in accordance with section 49-201 (4), Idaho Code, and provided that this speed may be increased to eighty (80) miles per hour |
| 12 to 17 points | Under the Idaho point system, how many points in any 12 months lead to a 30-day suspension?Answer: 12 to 17 points | Idaho Driver's Handbook, page 123QuoteNUMBER OF POINTS 8 to 11 in any 12 months 12 to 17 in any 12 months 18 to 23 in any 24 months 24 or more in any 36 months PENALTY Warning letter 30-day suspension |
| 3 points | What is the most points an ITD-approved Defensive Driving Course can remove from your Idaho record?Answer: 3 points | Idaho Driver's Handbook, page 123QuoteA maximum of three (3) points may be removed from your driving record upon completion of an ITD-approved DDC. |
| 30-day | An Idaho driver who is 16 is convicted of a second moving traffic violation. What GDL penalty applies?Answer: A 30-day suspension of driving privileges | Idaho Driver's Handbook, page 125QuoteA 30-day suspension of driving privileges for a second conviction for a moving traffic violation. |
| $1,500 | You are in a crash in Idaho. When must it be reported to police?Answer: When someone is injured or property damage is more than $1,500 | Idaho Driver's Handbook, page 121QuoteYou must report to police any motor vehicle crash in which someone is injured or property damage is more than $1,500. |
| $15,000 | Idaho requires at least $25,000 of liability coverage for injury to one person and $50,000 for injury to two or more people in one crash. What is the minimum coverage for damage to other people's property?Answer: $15,000 | Idaho Transportation Department, Division of Motor Vehicles websiteQuotein the amount of fifty thousand dollars ($50,000) because of bodily injury to or death of two (2) or more persons in any one (1) accident, and in the amount of fifteen thousand dollars ($15,000) because of injury to or destruction of property of others in any one (1) accident. |
Speed limits
9 numbers
| Number | What it’s about | Source |
|---|---|---|
| 35 mph | Speed limits: Business & residence districts35 mph in any residential, business or urban district | legislature.idaho.govQuoteThirty-five (35) miles per hour in any residential, business or urban district, unless otherwise posted |
| 55 mph | Speed limits: Rural highways55 mph in other locations unless posted (up to 70) | legislature.idaho.govQuoteFifty-five (55) miles per hour in other locations, unless otherwise posted, up to a maximum of seventy (70) miles per hour. |
| 75 mph | Speed limits: Interstates75 mph unless posted | legislature.idaho.govQuoteSeventy-five (75) miles per hour on interstate highways, unless otherwise posted in accordance with section 49-201 (4), Idaho Code, and provided that this speed may be increased to eighty (80) miles per hour |
| 80 mph | Speed limits: InterstatesUp to 80 mph where ITD sets it after an engineering study | legislature.idaho.govQuoteSeventy-five (75) miles per hour on interstate highways, unless otherwise posted in accordance with section 49-201 (4), Idaho Code, and provided that this speed may be increased to eighty (80) miles per hour |
| 15 mph | You are driving a car, not towing anything, on a two-lane highway posted at 55 mph. Outside any work zone, you pass a truck going 45. How much over the limit may you go while passing?Answer: Up to 15 mph, then slow back to the limit | Idaho Driver's Handbook, page 77Quoteyou may exceed the posted speed limit by up to 15 miles per hour while passing another vehicle that is traveling below the posted speed limit on a two-lane roadway. |
| 35 mph | Unless a different limit is posted, what is the maximum speed in an Idaho residential, business or urban district?Answer: 35 mph | Idaho Driver's Handbook, page 68QuoteMaximum speed in any residential, business, or urban district is 35 miles per hour unless otherwise posted. |
| 75 mph | Unless otherwise posted, what is the maximum speed on an Idaho interstate?Answer: 75 mph | Idaho Driver's Handbook, page 68Quote75 miles per hour on interstates unless otherwise posted. (80 may be allowed where posted). |
| 65 mph | Unless a higher limit is posted, what is the maximum speed on an Idaho state highway?Answer: 65 mph | Idaho Driver's Handbook, page 68QuoteVehicles shall not exceed 65 miles per hour on state highways (70 may be allowed where posted). |
| 55 mph | In Idaho, what is the speed limit on a road that is not an interstate or a state highway and is outside any residential, business or urban district, unless signs say otherwise?Answer: 55 mph | Idaho Transportation Department, Division of Motor Vehicles websiteQuoteFifty-five (55) miles per hour in other locations, unless otherwise posted, up to a maximum of seventy (70) miles per hour. |
Distances & following gaps
13 numbers
| Number | What it’s about | Source |
|---|---|---|
| 100 feet | In a business or residential area in Idaho, how far ahead must you begin signaling before a turn?Answer: At least 100 feet | Idaho Driver's Handbook, page 72QuoteSignals must start at least 100 feet (in business or residential areas) or five seconds (on freeways or highways) before you turn or change lanes. |
| 500 feet | Near the crest of a hill, approaching drivers could see your car from only 300 feet away. May you make a U-turn there?Answer: No, approaching drivers must be able to see you within 500 feet | Idaho Driver's Handbook, page 73QuoteU-turns may not be made on any curve, or the approach of or near the crest of a hill, where the vehicle cannot be seen by approaching vehicles from either direction within 500 feet |
| 200 feet | When passing on a two-lane road, how far from oncoming traffic must you complete the pass?Answer: Before coming within 200 feet of it | Idaho Driver's Handbook, page 78QuoteComplete a pass before coming within 200 feet of oncoming traffic. |
| 100 feet | On a two-lane road, how close to an intersection or railroad crossing may you be when passing, unless traffic-control devices say otherwise?Answer: No closer than 100 feet | Idaho Driver's Handbook, page 76QuoteWithin 100 feet of an intersection, unless otherwise indicated by traffic-control devices Within 100 feet of a railroad crossing |
| Three seconds | What following distance does the Idaho handbook give as the minimum in good conditions?Answer: Three seconds | Idaho Driver's Handbook, page 79QuoteThe three-second following distance rule is the minimum recommended safest procedure to use. |
| three seconds | How should you change your following distance in bad weather?Answer: Increase the three seconds several times over | Idaho Driver's Handbook, page 80QuoteIn bad weather, the three seconds should be increased several times to give an extra margin of safety. |
| three seconds | What following distance should you keep behind a motorcycle?Answer: More than three seconds | Idaho Driver's Handbook, page 104QuoteAllow more than three (3) seconds following distance between your vehicle and the motorcycle. |
| 3 feet | What is the minimum space the Idaho handbook says to leave when passing a bicyclist?Answer: 3 feet | Idaho Driver's Handbook, page 98QuoteA safe margin is at least three (3) feet. This may require waiting for a break in oncoming traffic. |
| 50 feet, 15 feet | When you are required to stop at a railroad crossing in Idaho, where should you stop?Answer: Within 50 feet but no closer than 15 feet from the nearest rail | Idaho Driver's Handbook, page 60QuoteWhen required to stop, you should do so within 50 feet but no less than 15 feet from the nearest rail of the crossing. |
| 7,000 feet | About how far does a 150-car freight train going 50 mph need to stop?Answer: About 7,000 feet, or more than a mile | Idaho Driver's Handbook, page 60QuoteThe stopping distance for a 150-car freight train traveling 50 miles per hour is 7,000 feet or 1 and 1/3 miles. |
| 500 feet | When does Idaho require headlights?Answer: From sunset to sunrise and when you cannot see 500 feet ahead | Idaho Driver's Handbook, page 109QuoteTurn on your headlights (not just your parking lights) when driving between sunset and sunrise, or when visibility has been reduced to below 500 feet. |
| 500 feet, 200 feet | Idaho law requires you to dim your high beams how far before meeting an oncoming vehicle, and how far before overtaking one?Answer: 500 feet before meeting and 200 feet before overtaking | Idaho Driver's Handbook, page 43QuoteHeadlamps must be dimmed 500 feet before meeting and 200 feet before overtaking another vehicle. |
| 100 feet | At night with low beams on, about how far ahead can you see, according to the Idaho handbook?Answer: About 100 feet | Idaho Driver's Handbook, page 109Quote350 feet when using the high beams of your headlights and about 100 feet when using the low beams. |
Parking
5 numbers
| Number | What it’s about | Source |
|---|---|---|
| 18 inches | When parallel parking on an Idaho street, how close to the curb must your wheels be?Answer: Within 18 inches | Idaho Driver's Handbook, page 80Quoteyou must park parallel to and within 18 inches of the curb or edge of the roadway, facing in the same direction as traffic on your side of the road. |
| 15 feet | In Idaho, how close to a fire hydrant may you park?Answer: No closer than 15 feet | Idaho Driver's Handbook, page 81QuoteWithin 15 feet of a fire hydrant |
| 20 feet | In Idaho, how close to a crosswalk may you park?Answer: No closer than 20 feet | Idaho Driver's Handbook, page 81QuoteWithin 20 feet of a crosswalk |
| 30 feet | In Idaho, how close may you park to a stop sign, yield sign or traffic signal?Answer: No closer than 30 feet | Idaho Driver's Handbook, page 81QuoteWithin 30 feet of a stop sign, yield sign, or traffic signal |
| 50 feet | Idaho bans parking within a set distance of certain places. Which place is paired with its correct distance?Answer: Railroad tracks: 50 feet | Idaho Driver's Handbook, page 81QuoteWithin 50 feet of railroad tracks |
Ages, permits & the test
8 numbers
| Number | What it’s about | Source |
|---|---|---|
| 40 | Questions on the test | itd.idaho.govQuoteThe knowledge test consists of 40 questions; you can miss up to six (6) questions before failing the test. The knowledge test is available in English, Arabic, Chinese, Farsi, French, Korean, Russian, Serbo-Croatian, Spanish, Swahili, Vietnamese, and American Sign Language (ASL). |
| 90 days, 3 years | Phone useA court may suspend the license up to 90 days for 3 or more convictions in 3 years | legislature.idaho.govQuoteA court may suspend a person’s driver’s license for up to ninety (90) days if the person has three (3) or more convictions for violations of this section within a three (3) year period. |
| 50 hours | Under Idaho's Graduated Driver's License program, how much supervised driving must a teen log during the supervised instruction period?Answer: At least 50 hours, with 10 of them at night | Idaho Driver's Handbook, page 19QuoteAccumulate at least 50 hours of supervised driving time, ten hours of which must be at night. |
| 21 years | During Idaho's supervised instruction period, who must ride with the teen driver?Answer: A licensed driver at least 21 years old in the front passenger seat | Idaho Driver's Handbook, page 19QuoteBe accompanied by a valid licensed driver at least 21 years of age who is occupying the front seat beside the driver (no other passengers are allowed in the front seat). |
| 6-month | An Idaho teen is convicted of a traffic violation four months into the supervised instruction period. What happens?Answer: The permit is canceled and a new 6-month period starts with a new permit | Idaho Driver's Handbook, page 19Quotethe permit will be canceled and you must reapply for a new permit. Your minimum 6 months of supervised driving time starts over again with the issuance of a new permit. |
| age 18 | You are 17 and hold an Idaho Class D Instruction Permit. Who must be with you when you practice driving?Answer: An adult age 18 or older who holds a valid driver's license | Idaho Driver's Handbook, page 16Quoteallow an applicant who is 17 years of age or older to practice safely operating a motor vehicle for one (1) year when accompanied by an adult (someone who is 18 years of age or older) who holds a valid driver’s license. |
| 30 hours, 6 hours | What does an approved Idaho Driver Training program require?Answer: 30 hours of classroom, 6 hours observing and 6 hours behind the wheel | Idaho Driver's Handbook, page 19Quotea required 30 hours of classroom instruction, 6 hours of in-car experience observing other student drivers, and 6 hours of behind-the-wheel practice with an approved DT instructor. |
| three years | Your Idaho license was suspended for reckless driving. What must you provide, along with the reinstatement fee, to get it back?Answer: An SR-22 proof of liability insurance for three years | Idaho Driver's Handbook, page 128Quoteyou must also provide proof of financial responsibility for three years. The acceptable form of proof of financial responsibility is a certified statement of liability insurance coverage from your insurer (an SR-22 certificate). |
Time limits & deadlines
4 numbers
| Number | What it’s about | Source |
|---|---|---|
| $1,500 | CrashesReport immediately, by the quickest means, any crash causing injury or death, or property damage to any one person over $1,500 | legislature.idaho.govQuoteor damage to the property of any one (1) person in excess of one thousand five hundred dollars ($1,500) shall immediately, by the quickest means of communication, give notice of the accident to the local police department if the accident occurs within a city |
| 30 days | You move to a new home in Idaho. How soon must you notify ITD of your new address?Answer: Within 30 days | Idaho Driver's Handbook, page 29QuoteYou must notify ITD within 30 days when your address changes. |
| One year | You are convicted of driving without insurance in Idaho for the first time. How long must you provide proof of financial responsibility?Answer: One year | Idaho Driver's Handbook, page 128Quoteif you violate Idaho’s no-insurance laws, you will be required to provide proof of financial responsibility for one year for a first offense. |
| six years | An uninsured driver caused your crash and you cannot collect damages. After a court judgment, how long can ITD suspend that driver's privileges?Answer: Until you are paid, or for up to six years | Idaho Driver's Handbook, page 119QuoteAfter a court judgment has been entered, the department may suspend the driving privileges of the uninsured driver until you have been paid, or for up to six years. |
Seat belts, lights & equipment
3 numbers
| Number | What it’s about | Source |
|---|---|---|
| 6 years | Idaho law requires children of what age to ride in an approved child safety seat?Answer: 6 years old or younger | Idaho Driver's Handbook, page 41QuoteIdaho 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. |
| 25 feet | How quickly must the foot brakes on an Idaho vehicle be able to stop it from 20 mph on dry pavement?Answer: Within 25 feet | Idaho Driver's Handbook, page 38QuoteFoot brakes must stop a vehicle that is traveling 20 miles per hour on dry pavement within a distance of 25 feet. |
| 18 inches | Your load sticks out 5 feet past the rear of your pickup during the day. What does Idaho require?Answer: A red flag at least 18 inches square at the end of the load | Idaho Driver's Handbook, page 43QuoteWhen vehicle loads extend four feet or more beyond the rear of a vehicle, a red flag at least 18 inches square must be displayed at the end of the load. |
Other numbers
1 number
| Number | What it’s about | Source |
|---|---|---|
| six times | According to the Idaho handbook, how does texting while driving compare with driving impaired?Answer: It is six times more dangerous | Idaho Driver's Handbook, page 93QuoteTexting while driving is six times more dangerous than driving impaired. |
Memory tips
How to study them (our advice, not official rules):
- Learn the number with its unit and its place. “15 feet from a hydrant” sticks; “15” on its own gets mixed up with 15 mph.
- Say the answer before you look. Recalling the number yourself is harder than spotting it among four options, and it is what makes it stick.
- Come back to the ones you miss. The quiz above brings missed questions back more often. Short rounds over several days beat one long session.
Questions about the numbers
What numbers do I need to know for the Idaho permit test?
Mostly distances (how close you may park to a hydrant or crosswalk, when to signal, when to dim your high beams), speed limits, blood-alcohol limits, and the ages, hours and deadlines for your permit and license. This page lists 63 of them for Idaho, each with its source.
Why focus on numbers?
A California DMV study of its own knowledge test found that many of the hardest questions “are numerical and have correct answers that must be learned by rote memorization.” Numbers are easy to mix up under pressure, so they are worth drilling on their own.
Where do these numbers come from?
Each one is quoted from the Idaho Driver's Handbook, Idaho statutes or DMV pages. Our build checks that every number on this page appears word for word in the quote it cites.
Is the numbers drill free?
Yes. The table and the numbers quiz are free and unlimited, and so are the first 20 flashcards.