Utah CDL Study Guide
Utah issues commercial driver licenses through the Driver License Division. The state follows federal CDL rules in its Commercial Driver License Handbook. You can drive a commercial vehicle inside Utah at 18. You must be 21 to drive across state lines or carry hazardous materials.
Key Utah numbers
- Minimum age (intrastate): 18
- Minimum age (interstate or hazmat): 21
- CLP hold before skills test: at least 14 days
- General Knowledge passing score: 80%
- General Knowledge test: ~50 questions
- Air Brakes test: ~25 questions (required if your vehicle has air brakes)
- Combination Vehicles test: ~20 questions (required for Class A)
Topics on the Utah General Knowledge test
- Vehicle inspection (pre-trip, en-route, post-trip)
- Driving safely (speed management, space management, hazard perception)
- Transporting cargo safely
- Air brakes (if your vehicle is air-braked)
- Combination vehicles (Class A)
If you fail a test
If you fail a CDL knowledge test in Utah, retakes cost $26 each. For the skills test, the Driver License Division allows 2 attempts. Additional skills retests after that cost $52 each.
Frequently asked questions
How old do I need to be to get a CDL in Utah?
You must be at least 18 to drive a commercial vehicle inside Utah. You must be 21 to drive across state lines or carry hazardous materials.
How long must I hold my Utah CLP before the skills test?
You must hold your Commercial Learner Permit for at least 14 days before you can take the CDL skills test.
How much does a Utah CDL cost?
The knowledge test fee is $52 (includes CLP), the skills test fee is $78 (includes CDL issuance), and each endorsement is $9.
Do I need to take Entry-Level Driver Training in Utah?
Yes. If you are getting your first Class A or B CDL, or your first H, P, or S endorsement, you must complete federal ELDT from an FMCSA-registered provider.
Do I need a DOT medical card to get a Utah CDL?
Yes. You must complete a DOT medical exam and submit Form CDL-42 and your Medical Examineru0027s Certificate to the Driver License Division.
What is the official Utah CDL manual?
The Utah Commercial Driver License Handbook is the official study guide. You can download it free from dld.utah.gov.
Free practice
Start an Utah General Knowledge quiz →
Sources: Utah CDL Manual PDF (2025) Utah Driver License Division CDL Information Utah DLD Fees Utah CDL Original page