Free Utah CDL practice test online
Take a free Utah CDL practice exam online with clear explanations—no sign-up. Coverage includes general knowledge, vehicle systems, combination vehicles, cargo, and endorsements. Then verify current requirements with Utah Driver License Division.
CDL knowledge tests are federally regulated, so the passing score in Utah is the same as everywhere else: 80% correct on every knowledge test. You must also hold a commercial learner’s permit for 14 days before the skills test.
New to the knowledge test? CDL endorsements explained · One-week study plan
Requirements before you test
Utah CDL test requirements
Commercial licensing is largely federal. Any figure above credited to a 49 CFR section applies in every state — see 49 CFR 383.135(a)(1) and 49 CFR 383.25(e). A figure credited to Utah Driver License Division is Utah’s own, and may be stricter than the federal floor. Test length, fees, and scheduling are set by Utah Driver License Division (official source).
Entry-Level Driver Training comes first
Since February 7, 2022, a new Class A or Class B CDL, a class upgrade, or a first passenger, school bus, or hazardous materials endorsement requires training from a provider on the FMCSA Training Provider Registry (49 CFR 380.600). Practice questions are study material and do not satisfy that requirement.
FMCSA Training Provider RegistryYou need a Utah licence first
A commercial learner’s permit only counts if you already hold an ordinary licence from the same state (49 CFR 383.25(a)(2)). The Utah non-commercial knowledge test runs 50 questions and needs 40 correct, with permits issued from age 15.
Utah permit practice testWhat you will practice
Build coverage topic by topic.
Each question carries a topic, difficulty, explanation, and source section so your review has context.
Sample questions
5 Utah CDL practice questions
Try these Utah sample questions now — each shows the correct answer with a plain-language explanation and a source section. The full 600-question bank is in the practice run.
1. To manage offtracking on a right turn, drivers often:
- ATurn from the far left lane without signaling
- Swing wide as needed while watching mirrors so the trailer clears the curb without hitting other traffic
- CCut across the corner tightly
- DBrake only after the trailer hits the curb
Answer: Swing wide as needed while watching mirrors so the trailer clears the curb without hitting other traffic. Watch the trailer path in mirrors. Avoid swinging so wide that you sideswipe traffic on the left.
Source: Commercial Driver License Manual — Combination vehicles — turning
2. Why should a driver avoid repeatedly pumping air brakes on a long downgrade?
- Each application uses air, and pressure can drop too low
- BIt causes the governor to cut in early
- CIt disables the trailer brakes
- DIt wears the brake pedal linkage
Answer: Each application uses air, and pressure can drop too low. Fanning the brakes releases air faster than the compressor can replace it, risking loss of braking on the descent.
Source: Commercial Driver License Manual — Air brakes — downgrade braking
3. When you encounter fog, you should:
- AFollow the vehicle ahead as closely as possible
- BAssume it will thin out after you enter
- Be ready to reduce speed; do not assume it will clear
- DUse high beams for better depth
Answer: Be ready to reduce speed; do not assume it will clear. Fog can worsen suddenly. Slow early and increase following distance.
Source: Commercial Driver License Manual — Driving in fog
4. On packed snow, reduce speed by about:
- AOne third
- One half or more
- CNothing if using cruise control
- DOne tenth
Answer: One half or more. On ice, reduce to a crawl and stop driving as soon as you can do so safely.
Source: Commercial Driver License Manual — Controlling speed — matching speed to the road
5. Wet roads can increase stopping distance by about:
- A10 percent
- Doubling it
- CNo change with ABS
- DCutting it in half
Answer: Doubling it. The CDL manual states wet roads can double stopping distance, which is why a one-third speed reduction is recommended.
Source: Commercial Driver License Manual — Driving safely — slippery surfaces
CDL knowledge areas
Classes and endorsements, organized.
Each area below scopes the reviewed question bank to one knowledge test. The material is federal, so it applies in Utah just like everywhere else — the endorsement guide explains how the codes fit together.
The foundation for commercial driving: inspections, space, speed, communication, hazards, and safe operation.
- Pre-trip inspection
- Space and speed management
- Railroad crossings
- Emergency procedures
Understand air-brake components, inspections, warning devices, stopping distance, and controlled braking.
- Dual air systems
- Low-air warnings
- Brake lag and fade
- Applied-leak and static checks
Prepare for safe coupling, inspection, turning, backing, and handling of tractor-trailer combinations.
- Fifth-wheel inspection
- Coupling and uncoupling
- Off-tracking
- Trailer skid prevention
Study hazard communication, shipping papers, placards, loading rules, parking, and emergency response responsibilities.
- Hazard classes
- Placards and labels
- Shipping papers
- Loading and segregation
Learn how liquid surge, outage, bulkheads, and high centers of gravity change vehicle handling.
- Liquid surge
- Outage requirements
- Smooth braking
- Rollover prevention
Practice converter-dolly inspection, coupling order, rearward amplification, and stability principles.
- Coupling sequence
- Converter dollies
- Rearward amplification
- Space management
Prepare to inspect, load, and operate buses while keeping passengers, aisles, and exits safe.
- Vehicle inspection
- Passenger loading
- Emergency exits
- Prohibited practices
Review student loading, danger zones, mirrors, emergency procedures, and special railroad-crossing duties.
- Danger zones
- Student loading
- Mirror use
- Railroad crossings
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Common questions
What this practice can—and cannot—tell you.