Key points
By driving you agree to a chemical test of breath, blood, urine or oral fluids when an officer asks.
Source: Handbook p. 53
“it is implied that you will submit to a chemical test of your breath, blood, urine, or oral fluids to determine the alcohol or drug content if asked to do so by a peace officer.”
Utah Driver Handbook, Handbook p. 53A first DUI at 21 or older means a 120 day suspension; a second means 2 years.
Source: Handbook p. 52
“On the first conviction of a DUI for a driver 21 and older, the driver license will be suspended for 120 days and two years for a second or subsequent offense.”
Utah Driver Handbook, Handbook p. 52Refusing a test revokes your license for 18 months, or 36 months for a second refusal.
Source: Handbook p. 53
“your driver license would be revoked for 18 months for the first offense and 36 months for the second or subsequent offenses.”
Utah Driver Handbook, Handbook p. 53After a first DUI you may drive only a vehicle with an ignition interlock for 18 months, or 3 years if under 21.
Source: Handbook p. 54
“they are automatically restricted to driving a vehicle that has an IID installed for 18 months from the date of conviction or the effective date of the license suspension or three years if they are under the age of 21”
Utah Driver Handbook, Handbook p. 54The interlock must be monitored at least every 60 days.
Source: Handbook p. 54
“Ignition interlock-restricted drivers are required to have the device monitored at least every 60 days.”
Utah Driver Handbook, Handbook p. 54Removing the interlock early gets your privilege suspended again.
Source: Handbook p. 54
“If the IID is removed from the vehicle before your ignition interlock driver restriction period ends, your driving privilege will be re-suspended.”
Utah Driver Handbook, Handbook p. 54Automobile homicide or felony DUI brings a lifetime alcohol restricted status.
Source: Handbook p. 53
“A lifetime alcohol-restricted status will result when a driver is convicted of automobile homicide or a felony DUI.”
Utah Driver Handbook, Handbook p. 53After a DUI arrest, the officer may have your vehicle impounded.
Source: Handbook p. 54
“If a driver is arrested for DUI, the officer may have the vehicle or motorboat impounded.”
Utah Driver Handbook, Handbook p. 54
Numbers to know
| Number | What it means | Manual |
|---|---|---|
| 120 days | first DUI suspension for adult drivers | Handbook p. 52 |
| 2 years | suspension for a second DUI | Handbook p. 52 |
| 18 months / 36 months | revocation for a first and second test refusal | Handbook p. 53 |
| 18 months / 3 years | interlock after a first DUI, adult and under 21 | Handbook p. 54 |
| 21 | age from which the adult DUI suspension rules apply | Handbook p. 52 |
| 60 days | maximum time between interlock checks | Handbook p. 54 |
3 questions from the Utah practice test
1. What license suspension does Utah state for a first DUI conviction when the driver is 21 or older?
- A 120-day suspension
- A 30-day suspension
- An 18-month suspension
- A two-year suspension
Show answer
A 120-day suspension. For a driver 21 or older, a first DUI conviction carries a 120-day license suspension. The two-year period applies to a second or subsequent offense, so it should not be substituted for the first conviction in this scenario. Read the age and offense history together when identifying the applicable period. A chemical-test refusal is a different licensing event with its own revocation schedule; the cue here is that the question concerns a court conviction for DUI.
2. A Utah driver refuses the chemical test an officer selects after a DUI arrest. What happens to the license for a first refusal?
- Revoked for 18 months
- Suspended for 30 days
- Revoked for 36 months
- Nothing until conviction
Show answer
Revoked for 18 months. Refusing the chemical tests selected or designated by the officer carries its own penalty under Utah's implied consent rule. The license is revoked for 18 months for a first refusal and 36 months for a second or subsequent refusal. A driver under 21 loses the license for two years or until age 21, whichever is longer, for a first refusal. The revocation does not wait for a court conviction, and 30 days is not a refusal figure.
3. What is the longest permitted interval between ignition interlock monitoring visits for a restricted Utah driver?
- 30 days
- 60 days
- 120 days
- 90 days
Show answer
60 days. An ignition interlock device must be monitored at least every 60 days while the driver is restricted. Waiting 90 days would exceed the monitoring interval, even if the vehicle seems to operate normally. Installation is therefore only one part of complying with the restriction. Put the next monitoring date on a calendar after each service visit, and arrange the visit early enough that scheduling problems do not carry it beyond the required interval.
Practice this topic
Lock it in with alcohol and dui questions from the free Utah practice test. Every answer comes with a plain English explanation.
Source: the Utah Driver Handbook, Section 10: Alcohol and the Law. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.