- General Knowledge is 50 questions, 80% to pass, and required for every CDL class in Utah.
- $52 covers two attempts per core test; a second pair costs $26, endorsements are $9 for two tries.
- Your CLP is valid 180 days but must be held at least 14 days before skills testing.
- Drivers under 21 can't get H, P, or S endorsements and are limited to intrastate driving.
Quick Facts Snapshot
If you only have five minutes before walking into a Utah Driver License Division (DLD) office, this is the page to read. It compresses everything from the UT-CDL requirements guide and the full UT-CDL Study Guide 2026 into a one-page reference you can review the night before your knowledge test.
| Item | Detail |
|---|---|
| Administering Agency | Utah Department of Public Safety, Driver License Division |
| Current Handbook Edition | March 2025 |
| General Knowledge Test | 50 questions, closed-book, English, 80% passing |
| Combination Vehicles Test | 20 questions |
| Air Brakes Test | 25 questions |
| Application Fee | $52 (includes 2 attempts per required core test) |
| Additional Core Attempts | $26 per pair |
| Endorsement Testing | $9 per pair of attempts |
| CLP Validity | 180 days; must be held 14+ days before skills test |
Fees, Attempts & Registration Mechanics
Utah's CDL knowledge testing runs entirely through DLD offices, not a third-party vendor. Understanding the fee structure matters because it directly affects how you should schedule retakes. The $52 application fee is your baseline - it buys two attempts on each required core knowledge test (General Knowledge, plus any class-specific test like Combination Vehicles or Air Brakes). If you burn through both attempts and still haven't hit the required score, a second set of two attempts costs $26. Endorsement exams are billed separately at $9 for two attempts.
For a full breakdown of every fee combination and how endorsement costs stack with core testing, see the UT-CDL Certification Cost 2026 pricing breakdown.
Eligibility Checklist
Before you schedule anything, confirm you actually qualify. Utah requires:
- Minimum age of 18 (with intrastate-only restrictions and endorsement limits until 21)
- At least one year holding a Class D license
- Proof of identity, Utah residency, and self-certification of driving type
- Meeting DOT medical requirements
- Completion of applicable Entry-Level Driver Training (ELDT) before skills testing
A complete walkthrough of every requirement, including document specifics, lives in the UT-CDL Requirements 2026 guide.
The 3 Content Domains, Distilled
Every version of the General Knowledge test draws from the same three content domains. Knowing what lives in each one lets you triage your study time instead of rereading the whole handbook cover to cover.
Domain 1: Introduction
Foundational material covering licensing structure, CLP mechanics, and the general framework of commercial driving in Utah.
- How the CLP-to-CDL pathway works, including the 180-day validity window
- Why the 14-day minimum holding period exists before skills testing
- Basic classification differences between CDL types
Domain 2: Driving Safely
The largest practical domain, covering vehicle control, hazard recognition, and safe operating procedures.
- Space management, speed management, and visibility scenarios
- Communicating with other drivers and hazard perception
- Emergency maneuvers and railroad-crossing procedures
Domain 3: Transporting Cargo Safely
Focused on cargo handling responsibilities that apply across nearly every CDL job.
- Weight distribution, securement, and inspection basics
- Cargo documentation and hazard awareness during loading
- How cargo rules interact with vehicle handling and braking distance
For a deeper breakdown of how these three domains map to specific handbook chapters and sample question phrasing, read the complete guide to all 3 content areas.
Key Takeaway
Domain 2 (Driving Safely) carries the most scenario-based questions, so allocate more review time there than to Domain 1's more memorization-based content.
Test Format by CDL Class
Not every applicant takes the same set of tests. General Knowledge is mandatory for every CDL class, but the additional tests depend on what you're driving.
- General Knowledge: 50 closed-book questions, English, 80% required - required for all classes
- Combination Vehicles: 20 questions - required if you're pursuing a Class A CDL
- Air Brakes: 25 questions - required if your vehicle is equipped with air brakes
Endorsement tests (like tanker, hazmat, or passenger) are separate exams billed at the $9-per-pair endorsement rate, and are entirely optional based on the job you're targeting. If you're unsure whether the exam difficulty is proportional to your background, the Complete Difficulty Guide 2026 breaks down what makes each section harder or easier depending on prior driving experience.
CLP Validity & Under-21 Restrictions
Two timing rules trip up more applicants than the actual test content:
- 180-day validity window: Your Commercial Learner's Permit (CLP) expires 180 days after issuance. If your skills test scheduling drags past that window, you'll need to restart the knowledge testing process.
- 14-day minimum hold: You cannot take your skills test until you've held the CLP for at least 14 days - even if you're ready sooner. Plan your skills-test appointment accordingly.
Drivers under 21 face additional limits: they're restricted to intrastate operation only and cannot obtain H (hazmat), P (passenger), or S (school bus) endorsements, regardless of how well they score on the knowledge tests. If your career plans involve interstate hauling or one of those three endorsements, factor age eligibility into your timeline now rather than after you've already scheduled testing.
See the Testing Windows, Deadlines & Scheduling guide for how to line up your CLP issuance date with your skills test appointment.
One-Week Cram Plan
If your CLP clock is already running and you need a compressed review schedule instead of a multi-week program, structure your final week around the domain weight, not the calendar.
Domain 1: Introduction
- Review CLP mechanics, 180-day/14-day rules, and license classifications
- Take a timed 50-question practice run to establish your baseline
Domain 2: Driving Safely
- Drill space management, hazard recognition, and emergency maneuver scenarios
- Re-test any missed questions from your baseline run
Domain 3 + Class-Specific Tests
- Cover cargo securement and inspection basics
- If pursuing Class A, add Combination Vehicles review; if air brakes apply, add that 25-question set
Full Simulation
- Run a full-length practice exam under closed-book, timed conditions
- Confirm you're consistently clearing 80% before your DLD appointment
For a longer-format version of this plan with more repetition cycles, the how-to-pass-on-your-first-attempt guide extends this into a multi-week structure.
Common Last-Minute Pitfalls
A handful of avoidable mistakes account for most wasted attempts:
- Skipping class-specific tests until the last minute: If you need Combination Vehicles or Air Brakes, don't leave those 20-25 question sets for the day of your appointment.
- Ignoring the ELDT requirement: Passing the knowledge test doesn't waive Entry-Level Driver Training - confirm your ELDT provider and completion status before assuming you're done.
- Miscounting the 14-day hold: Applicants sometimes book skills tests too early, not realizing the CLP hold period is a hard floor, not a suggestion.
- Assuming endorsement eligibility under 21: If you're not yet 21, don't study for H, P, or S endorsements you're not eligible to hold yet.
Curious how UT-CDL certification actually translates into job opportunities once you're licensed? The UT-CDL Jobs and UT-CDL Salary Guide 2026 pages cover what comes after the permit stage, and Is the UT-CDL Certification Worth It? weighs the overall return before you commit further time and testing fees. You can also start building test familiarity right now with practice questions on our main UT-CDL practice test platform.
Key Takeaway
Most avoidable failures come from timeline mistakes (14-day hold, ELDT completion, endorsement age limits) - not from the knowledge test content itself.
FAQ
The General Knowledge test has 50 closed-book, multiple-choice questions administered in English, and you need to score at least 80% to pass. It's required for every CDL class in Utah.
It covers two attempts on each required core knowledge test. If you need more attempts, a second set of two costs $26, and endorsement testing is billed separately at $9 for two attempts.
Your Commercial Learner's Permit is valid for 180 days. You must hold it for at least 14 days before you're eligible to schedule your skills test.
No. Drivers under 21 are restricted to intrastate operation and cannot obtain H (hazmat), P (passenger), or S (school bus) endorsements until they turn 21.
Utah paused non-domiciled CDL issuance as of January 20, 2026. Applicants who aren't domiciled in the U.S. should confirm current Driver License Division policy before applying.