Idaho: Alcohol and drugs — Part 4 Practice Test
Questions in this part include: “What is the maximum jail sentence for a first driving under the influence conviction?” · “What is the maximum fine for a second driving under the influence conviction within 10 years?”
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Questions are original and based on the official manual "Idaho Driver's Handbook" (July 2026), Idaho Transportation Department.
All 19 questions in this practice test
Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.
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What is the maximum jail sentence for a first driving under the influence conviction?
- Six months
- 30 days
- Three months
- One year
Show answer
Correct answer: Six months
A first conviction carries up to six months in jail.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What is the maximum fine for a first driving under the influence conviction?
- $500
- $750
- $1,000
- $1,500
Show answer
Correct answer: $1,000
A first conviction carries a fine of up to $1,000.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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For a first driving under the influence conviction (age 21 or older), the mandatory license suspension is:
- at least 30 days and up to 60 days
- at least 90 days and up to 180 days
- at least 6 months and up to 18 months
- at least 2 years and up to 3 years
Show answer
Correct answer: at least 90 days and up to 180 days
A first conviction brings a mandatory suspension of at least 90 days and up to 180 days (one year if under 21).
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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For a first driving under the influence conviction, how long is the mandatory license suspension if you are under 21?
- 30 days
- Three years
- Five years
- One year
Show answer
Correct answer: One year
The suspension for a first conviction is one year if you are under 21.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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After a first driving under the influence conviction, for how many days are there absolutely no driving privileges?
- The first 30 days
- The first 10 days
- The first 60 days
- The first 90 days
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Correct answer: The first 30 days
The suspension comes with absolutely no driving privileges for the first 30 days.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What will likely be required after the suspension for a driving under the influence conviction?
- A mandatory driver safety course
- A yearly vehicle safety inspection
- An ignition interlock restriction
- Installation of a speed limiter
Show answer
Correct answer: An ignition interlock restriction
The handbook says an ignition interlock restriction will likely be required after the suspension.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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For a second driving under the influence conviction within 10 years, the mandatory jail sentence for a driver 21 or older is:
- 5 days to 90 days
- 10 days to one year
- 3 days to six months
- 10 days to five years
Show answer
Correct answer: 10 days to one year
A second conviction within 10 years carries a mandatory jail sentence from 10 days to one year.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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If you are under 21, a second driving under the influence conviction within 10 years carries a mandatory jail sentence of how long?
- 5 days
- 60 days
- 90 days
- 30 days
Show answer
Correct answer: 30 days
The handbook gives 30 days for those under 21, in place of 10 days to one year.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What is the maximum fine for a second driving under the influence conviction within 10 years?
- $2,000
- $1,500
- $3,000
- $4,000
Show answer
Correct answer: $2,000
A second conviction carries up to a $2,000 fine.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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For a second driving under the influence conviction within 10 years (age 21 or older), the mandatory license suspension is:
- 90 days
- Six months
- One year
- Five years
Show answer
Correct answer: One year
A second conviction within 10 years brings a mandatory suspension of one year (two years if under 21).
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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If you are under 21, how long is the mandatory license suspension for a second driving under the influence conviction within 10 years?
- 90 days
- Two years
- Three years
- Five years
Show answer
Correct answer: Two years
For those under 21, a second conviction brings a two-year suspension.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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For three or more driving under the influence convictions within 10 years, the mandatory jail sentence for a driver 21 or older is:
- 10 days to one year
- 60 days to five years
- 90 days to two years
- 30 days to ten years
Show answer
Correct answer: 30 days to ten years
Three or more convictions within 10 years carry a mandatory jail sentence from 30 days to ten years.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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If you are under 21 with three or more driving under the influence convictions within 10 years, what is the mandatory jail sentence?
- 10 days to six months
- 30 days to ten years
- 30 days to one year
- 90 days to two years
Show answer
Correct answer: 10 days to six months
For those under 21, the mandatory jail sentence is 10 days to six months.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What is the maximum fine for three or more driving under the influence convictions within 10 years (age 21 or older)?
- $2,500
- $3,000
- $5,000
- $10,000
Show answer
Correct answer: $5,000
The fine is up to $5,000 (up to $2,000 if under 21).
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What is the maximum fine for three or more driving under the influence convictions within 10 years if you are under 21?
- $1,000
- $2,000
- $3,000
- $5,000
Show answer
Correct answer: $2,000
Under 21, the fine for three or more convictions is up to $2,000.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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For three or more driving under the influence convictions within 10 years (age 21 or older), the mandatory license suspension is:
- 90 days to one year
- six months to two years
- two to ten years
- one to five years
Show answer
Correct answer: one to five years
Three or more convictions bring a mandatory license suspension from one to five years.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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If you are under 21, how long is the mandatory suspension after three or more driving under the influence convictions within 10 years?
- 1 year or up to age 21, whichever is greater
- 90 days or up to age 21, whichever is less
- 2 years or up to age 25, whichever is greater
- 30 days or until the next birthday
Show answer
Correct answer: 1 year or up to age 21, whichever is greater
For those under 21, the suspension is 1 year or up to age 21, whichever is greater.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What kind of offense is a conviction for three or more driving under the influence offenses within 10 years?
- A misdemeanor
- A civil infraction
- A felony
- A traffic warning
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Correct answer: A felony
The handbook states that a conviction for three or more offenses within 10 years is a felony.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)
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What is the most severe penalty CDL drivers may face for driving under the influence?
- A fine of $10,000
- Lifetime loss of CDL privileges
- Five years in prison
- A one-year suspension of all licenses
Show answer
Correct answer: Lifetime loss of CDL privileges
There are enhanced penalties for CDL drivers, up to the lifetime loss of CDL privileges.
Source: Idaho Driver's Handbook (July 2026), page 132 · Open this page in the manual (Manual page 132)