Utah CDL — General Knowledge Practice Test
The Utah CDL — General Knowledge knowledge test has 50 questions, and you need 40 correct (80%) to pass. Practice free with questions written from the official Utah driver handbook — every one has a clear explanation, and you can retake as often as you like with no sign-up.
Content reviewed against official driver handbooks · July 7, 2026
What's on the Utah written test
The Utah CDL — General Knowledge knowledge test has 50 questions; you need 40 correct (80%) to pass.
Based on the official Utah exam format — always confirm current details with your state DMV.
Practice by topic
Focus on one area at a time — each topic has its own set of Utah practice questions.
Learn the shapes, colors, and meanings of regulatory, warning, and guide signs — from stop and yield to construction and school-zone signs.
Speed limits, turning and signaling rules, headlight and seat-belt requirements, and the everyday laws every driver must follow.
How to read traffic signals, lane lines, and pavement markings — including yellow and white lines, arrows, and flashing lights.
Who goes first at intersections, four-way stops, roundabouts, and crosswalks, and how to yield to pedestrians and emergency vehicles.
Following distance, scanning, blind spots, using your lights, and the habits that prevent crashes and keep you in control.
Driving safely around motorcycles, bicycles, large trucks, pedestrians, and school buses — and knowing who has the right of way.
Blood alcohol limits, zero-tolerance and implied-consent laws, and how alcohol and drugs — legal or not — affect your driving.
Legal and illegal parking, colored curbs, distances from hydrants and crossings, and how to park safely on hills.
Choosing a safe speed, keeping a space cushion, adjusting for weather and traffic, and understanding stopping distance.
What to do when things go wrong — brake failure, tire blowouts, skids, and stalling on railroad tracks.
The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.
How to pass the first time
- Read the official Utah driver handbook at least once before test day.
- Practice by topic to find your weak spots, then fix them.
- Take full-length practice tests until you pass comfortably every time.
- Read every explanation — understanding beats memorizing.
Utah CDL — General Knowledge test — frequently asked questions
How many questions are on the Utah CDL — General Knowledge test?
The Utah CDL — General Knowledge knowledge test has 50 questions, and you need 40 correct (80%) to pass. Our practice tests mirror that format.
How many questions can I miss on the Utah CDL — General Knowledge test?
You can miss up to 10 of the 50 questions and still pass — you need 40 correct, which is 80%.
Can I retake the practice test?
Yes — practice as often as you like, completely free. The questions and answer choices are shuffled each time.
Can I take the Utah practice test in Spanish?
Yes. Every question here is available in English and Spanish — switch languages anytime. Many states also offer the real knowledge test in languages other than English; confirm what Utah offers with your DMV.
Can I practice on my phone?
Yes. The practice tests work in any mobile or desktop browser — no app or sign-up needed — so you can study anywhere.
Are these the real DMV test questions?
No. Our questions are original, written from the current official Utah driver handbook to match the real test's topics and style. We are not affiliated with any DMV or government agency.
What's the best way to study?
Read the Utah driver handbook, practice by topic to target weak areas, and finish with full-length tests until you consistently pass.
Other Utah practice tests
Take the CDL — General Knowledge test in another state
Every Utah question is written from the official Utah driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free
Utah CDL — General Knowledge questions with answers
20 sample questions from the Utah CDL — General Knowledge question bank — each with the correct answer, a short explanation, and the section of the official handbook it comes from.
1. What white pavement marking may appear before railroad tracks, and what does it govern?
Correct answer: A stop line the school bus front must stay behind
A white stop line may be painted before the rails; a stopped school bus must keep its front bumper behind that line at the crossing.
Source: Utah CDL Manual — Section 2: Driving Safely (Pavement Markings)
2. Which three distances add together to make total stopping distance?
Correct answer: Perception, reaction, and braking distance
Total stopping distance combines perception distance, reaction distance, and braking distance.
Source: Utah CDL Manual — Section 2: Driving Safely (Stopping Distance)
3. When you stop on a hill or curve that blocks other drivers' view, what should you do with the rear warning device?
Correct answer: Move it back beyond the obstruction so warning reaches 500 feet
Move the rearmost triangle farther back beyond the hill or curve so drivers get warning at least 500 feet before reaching your vehicle.
Source: Utah CDL Manual — Section 2: Driving Safely (Communicating Your Presence)
4. What symbol identifies a slow-moving vehicle such as farm machinery?
Correct answer: A red triangle with an orange center
The slow-moving-vehicle emblem shows an orange center framed by a red triangle, alerting drivers to a vehicle traveling well under normal speed.
Source: Utah CDL Manual — Section 2: Driving Safely (Slow Drivers)
5. What is the penalty for a second major alcohol or drug offense in a commercial vehicle?
Correct answer: Loss for life
A second offense results in loss of the CDL for life.
Source: Utah CDL Manual — Section 1: Introduction (Alcohol Disqualifications)
6. When gates lower at a railroad crossing, when may you proceed?
Correct answer: After the gates rise and the lights stop flashing
Stop before the gate lowers and remain stopped until the gates rise fully and the lights stop flashing, then cross when it is safe.
7. Why should you take the starter key with you during a walk-around inspection?
Correct answer: To keep anyone from moving the vehicle while you inspect
Removing the key ensures no one can start or move the vehicle while you are inspecting around and under it.
Source: Utah CDL Manual — Section 2: Driving Safely (Seven-Step Inspection)
8. What does federal rule prohibit CMV drivers from doing with an electronic device while driving?
Correct answer: Texting or reading text messages
Texting, meaning manually entering or reading text on an electronic device, is prohibited for CMV drivers in interstate commerce.
Source: Utah CDL Manual — Section 2: Driving Safely (Texting)
9. How soon must a driver inform an employer that their license has been suspended, revoked, or canceled?
Correct answer: Within two business days
A driver has to notify the employer within two business days if the license is suspended, revoked, canceled, or the driver becomes disqualified.
Source: Utah CDL Manual — Section 1: Introduction (Other CDL Rules)
10. What is the first thing you should do at an accident scene when you are not seriously hurt?
Correct answer: Protect the area to prevent another crash
The first priority is to protect the area so no further crash happens in the same spot, then notify authorities and care for the injured.
Source: Utah CDL Manual — Section 2: Driving Safely (Accident Procedures)
11. When you must cross into an oncoming lane to complete a right turn, what should you do about vehicles coming toward you?
Correct answer: Give them room, but do not back up
Watch oncoming vehicles and leave them space to pass or halt; never reverse for them, since a vehicle could be right behind you.
Source: Utah CDL Manual — Section 2: Driving Safely (Right Turns)
12. How can you warn drivers behind you that you are about to slow down?
Correct answer: Lightly tap the brakes to flash your brake lights
Gently tapping the pedal so the brake lights blink alerts drivers behind that you are about to slow.
Source: Utah CDL Manual — Section 2: Driving Safely (Slowing Down)
13. Before checking overhead clearance at a bridge, what should you assume about posted heights?
Correct answer: They may no longer be accurate
Do not assume posted heights are still accurate, since repaving or packed snow may have reduced the actual clearance.
Source: Utah CDL Manual — Section 2: Driving Safely (Space Overhead)
14. How many tie-downs are needed as a minimum for a 20-foot flatbed load?
Correct answer: Two
With at least one tie-down for every ten feet of cargo, a 20-foot load needs a minimum of two.
Source: Utah CDL Manual — Section 3: Transporting Cargo (Cargo Tie-Down)
15. Why are drivers of rental trucks a special hazard to watch for?
Correct answer: They are not used to the truck's limited vision
Rental-truck drivers often aren't used to how little they can see toward the sides and back, which makes their moves harder to predict.
Source: Utah CDL Manual — Section 2: Driving Safely (Blocked Vision)
16. At what blood alcohol concentration does it become illegal to operate a commercial motor vehicle?
Correct answer: .04 percent
Driving a CMV with a BAC of .04 percent or higher is against the law, a stricter threshold than for ordinary passenger vehicles.
Source: Utah CDL Manual — Section 1: Introduction (Alcohol Disqualifications)
17. What does a cross-buck sign at a railroad crossing require of you?
Correct answer: Give way and let any approaching train go first
The cross-buck identifies the grade crossing and directs you to let any train go first.
Source: Utah CDL Manual — Section 2: Driving Safely (Cross-Buck Signs)
18. During a pre-trip check, how are hydraulic brakes tested for leaks?
Correct answer: Pump the pedal three times, then hold firm pressure five seconds
Pump the brake pedal three times, then hold firm pressure for five seconds; if the pedal sinks, there may be a leak that must be fixed before driving.
Source: Utah CDL Manual — Section 2: Driving Safely (Test for Hydraulic Leaks)
19. What happens to your CDL if your personal-vehicle license is suspended for an alcohol-related violation?
Correct answer: You lose the CDL for one year
A suspension of your personal-vehicle privilege for alcohol, controlled substance, or felony violations also costs your CDL for one year.
Source: Utah CDL Manual — Section 1: Introduction (Traffic Violations in Personal Vehicle)
20. Which endorsements are the only ones allowed on a Commercial Learner's Permit?
Correct answer: Passenger, school bus, and tank vehicle
A CLP may carry only the passenger, school bus, and tank vehicle endorsements; the others cannot be added at the permit stage.
Source: Utah CDL Manual — Section 1: Introduction (CDL Endorsements)