General Knowledge (150 questions)
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01Q 1-50General Knowledge Test 180% needed to pass; 10 mistakes allowed
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02Q 51-100General Knowledge Test 280% needed to pass; 10 mistakes allowed
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03Q 101-150General Knowledge Test 380% needed to pass; 10 mistakes allowed
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0450 random QGK Test Simulator80% needed to pass; 10 mistakes allowed
HazMat (30 questions)
Passenger Vehicles (20 questions)
School Bus (20 questions)
Air Brakes (25 questions)
Combination Vehicles (24 questions)
Double/Triple Trailers (20 questions)
Tanker Vehicles (30 questions)
Pre-Trip Inspection (9 questions)
Utah CDL Knowledge Test FAQ
Understanding the CDL Knowledge Test
What is the Utah CDL knowledge test?
- Test Format: Computer-based at Utah Driver License offices
- General Knowledge Test: 50 questions, need 80% to pass
- Permit Validity: 12 months
- Waiting Period: 14 days before skills test
- Languages: English only
- Fees: $26.00 for CDL written tests
- Endorsement Fees: $9.00 for most endorsements
- Retesting: Wait until next business day to retest
The Utah CDL knowledge test is a test of your knowledge of commercial driving regulations. You must pass this test to get a Commercial Learner's Permit (CLP) which is required before you can take the skills test for a full CDL. The test covers vehicle operation, safety regulations, traffic laws and safe operating procedures. It's taken electronically at Driver License offices throughout Utah. Questions cover federal regulations and Utah specific rules so you have the knowledge to operate commercial vehicles in Utah and across state lines if applicable.
Who needs to take the CDL knowledge test in Utah?
You need to take the test if you're:
- Getting your first CLP
- Adding a new endorsement
- Upgrading your CDL class (from Class B to Class A for example)
- Reinstating an expired CDL (over one year)
- Transferring a CDL from another state with new endorsements
All applicants must take the general knowledge test plus additional tests for specific endorsements like Passenger (P), School Bus (S), Tank Vehicles (N), Hazmat (H), or Doubles/Triples (T). Each endorsement has its own test for that specific vehicle or cargo type.
Why is the CDL knowledge test important?
The test ensures commercial drivers have the knowledge to operate commercial vehicles safely. It verifies knowledge of regulations, safety practices, technical knowledge and emergency procedures. This helps maintain safety standards and reduces accident risks on public roads. Commercial vehicles can cause big damage in accidents because of their size and weight so proper knowledge and training is essential before operating these vehicles. The knowledge test is the first step in making sure you're ready for the responsibility of commercial driving.
How does the Utah test match federal requirements?
The test follows Federal Motor Carrier Safety Administration standards with Utah specific regulations. This ensures national consistency in commercial driver qualifications while addressing state specific requirements. Topics covered are general driving skills, air brake operations, combination vehicles and specific endorsements. This means your Utah CDL will be recognized throughout the United States and you can operate commercial vehicles across state lines (as long as you meet age and other requirements for interstate commerce).
How many questions are on the Utah CDL knowledge test?
- General Knowledge: 50 questions
- Air Brakes: 25 questions
- Combination Vehicles: 20 questions
- Passenger Endorsement: 20 questions
- School Bus Endorsement: 20 questions
- Hazmat Endorsement: 30 questions
- Tank Vehicles Endorsement: 20 questions
- Doubles/Triples Endorsement: 20 questions
The questions are multiple choice with 4 possible answers for each question. The tests are designed to thoroughly test your knowledge of safety procedures, regulations and technical knowledge of commercial vehicles.
Sample question: When checking your trailer connection you should make sure that:
- The fifth wheel is tilted upward
- There is no space between the upper and lower fifth wheel
- The kingpin is bent
- The apron is sitting on top of the fifth wheel
Answer: B. There is no space between the upper and lower fifth wheel
What score do I need to pass?
You must answer 80% of questions correctly on each test:
- General Knowledge: 40/50
- Air Brakes: 20/25
- Combination Vehicles: 16/20
- Passenger Endorsement: 16/20
- School Bus Endorsement: 16/20
- Hazmat Endorsement: 24/30
- Tank Vehicles Endorsement: 16/20
- Doubles/Triples Endorsement: 16/20
Each test is scored separately and you must pass each one individually. If you fail one test but pass others you'll only need to retest the failed test.
What languages can I take the test in?
The test is only in English. Federal regulations require commercial drivers to read and speak English sufficiently to understand traffic signs, communicate with officials, complete records and understand shipping documents. This ensures all commercial drivers can safely navigate roadways, communicate with law enforcement and emergency services and properly handle documentation. There are no exceptions to this language requirement for CDL testing in Utah.
Can I use study aids during the test?
No. You cannot use notes, electronic devices, reference materials or calculators during the test. Testing areas are monitored and using prohibited materials will result in test failure. All personal items must be stored in a designated area during testing. This includes:
- Cell phones and electronic devices
- Notes or cheat sheets
- Commercial Driver License manuals
- Reference materials of any kind
- Calculators (unless specifically authorized for certain questions)
Using prohibited materials during testing could result in immediate disqualification and may affect your ability to test again in the future.
How long do I have to complete the test?
There is no time limit but most applicants complete the general knowledge test in 60-90 minutes. Most endorsement tests take 30-45 minutes each. Plan accordingly if taking multiple tests in one visit. The Driver License Division provides sufficient time to complete the tests without rushing. If you have documented learning disabilities or other special needs, accommodations may be available with proper documentation.
What types of knowledge tests are available?
- General Knowledge – Mandatory for all CDL applicants.
- Air Brakes – Required for driving vehicles with air brake systems.
- Combination Vehicles – Needed for operating Class A truck-trailer combinations.
- Passenger (P) Endorsement – Required for driving buses or passenger-carrying vehicles.
- School Bus (S) Endorsement – Needed to operate a school bus.
- Doubles/Triples (T) Endorsement – For towing two or three trailers.
- Tank Vehicles (N) Endorsement – Needed to haul liquids or gases in tanks.
- Hazardous Materials (H) Endorsement – Required for transporting hazardous cargo.
Each test covers specific knowledge for that class of vehicle or type of operation. You only need to take the tests relevant to the type of commercial driving you plan to do.
Sample question: When driving with air brakes what is brake lag?
- Time for brakes to wear out
- Time for air to flow through lines when brake pedal is pressed
- Time to move foot from accelerator to brake
- Time to pull parking brake
Answer: B. Time for air to flow through lines when brake pedal is pressed
What topics are covered on each CDL knowledge test?
General Knowledge: Vehicle inspection procedures, basic control, shifting gears, space management, night driving, adverse weather conditions, emergency procedures, cargo handling, accident procedures, fires, fatigue awareness and basic hazardous materials regulations.
Air Brakes: System components and function, dual air brake systems, inspecting air brakes, proper use in various conditions, emergency stops, brake system failures and brake lag/fade.
Combination Vehicles: Coupling and uncoupling procedures, inspection points, handling characteristics, rollover prevention, jackknife avoidance, turning techniques and backing procedures for combination vehicles.
Passenger (P): Passenger loading and unloading procedures, emergency exits, passenger communication, accessibility requirements, disruptive passengers and railroad crossing requirements for passenger vehicles.
School Bus (S): Student loading and unloading procedures, emergency evacuation, schools, railroad crossing, student management, danger zones and special equipment.
Doubles/Triples (T): Coupling and uncoupling multiple trailers, handling characteristics during various maneuvers, inspection procedures, identifying and correcting handling problems and operating in adverse conditions.
Tank Vehicle (N): Liquid surge and weight distribution effects on handling, baffled vs non-baffled tanks, loading/unloading procedures and special braking for partially full tanks.
Hazmat (H): Hazardous materials classification and identification, documentation, loading/unloading procedures, driving rules, emergency response and security awareness.
How do I prepare for the Utah CDL knowledge test?
- Study all relevant sections of the Utah CDL Manual for your license class and endorsements
- Take our free practice tests
- Create a study schedule over several weeks not cramming
- Make flashcards for difficult concepts and technical terms
- Focus extra time on challenging topics (air brakes, hazmat)
- Review pre-trip inspection procedures thoroughly
- Pay attention to Utah specific regulations and requirements
- Study vehicle systems and components until you understand how they work
- Familiarize yourself with all required documentation and procedures
Consistent study over time is key not last minute cramming. Many applicants underestimate the technical knowledge especially for endorsements.
Are practice tests available?
Yes! Our free Utah practice tests will help you:
- Identify knowledge gaps
- Build confidence
- Simulate the actual test environment and format
- Track your progress
- Understand explanations for correct and incorrect answers
- Get familiar with the types of questions on the actual test
Our practice tests cover all CDL test categories and are updated regularly to reflect current testing standards. Using practice tests has been shown to increase first time pass rates.
How do I pass the Utah CDL knowledge test?
- Study for 2-3 weeks before your test date
- Understand concepts not just memorize answers
- Take our practice tests to focus on weak areas
- Get plenty of rest the night before
- Eat a good meal before testing to stay focused
- Read questions completely before answering
- Look for keywords like "always," "never," or "except" that can change a question's meaning
- Choose safety-oriented answers when unsure
- Review all answers before submitting if allowed
- Stay calm and focused during the test
Sample question: When should you use turn signals?
- Only when other vehicles are present
- At least 100 feet before turning
- Just as you begin to turn
- Only when changing lanes
Answer: B. At least 100 feet before turning
How similar are practice tests to the actual test?
Our practice tests cover the same topics and format as the actual test, but specific questions are different. We design our questions to match the style, difficulty and content of the Utah CDL knowledge test. The practice tests help you get used to:
- Question formats and wording
- Content coverage and depth
- Time management during testing
- Critical thinking skills for test success
Focus on understanding concepts not just memorizing answers, as the actual test draws from a large question bank and each test is unique.
Where do I take the CDL knowledge test?
At Utah Driver License offices that offer commercial licensing services. Not all offices provide CDL testing, so check the DLD website or call ahead to confirm. Testing locations have special equipment and staff for CDL testing. Major testing locations are in Salt Lake City, Ogden, Orem, Cedar City and other cities throughout Utah.
Do I need an appointment?
Yes, recommended. Schedule through:
- dld.utah.gov
- 801-965-4437 or 888-353-4224
Some locations may accept walk-ins for CDL testing, but wait times can be long and you may not be able to test that day if capacity is reached. Scheduling an appointment ensures you'll be tested at your preferred time and location.
Can I take the test online?
No. All CDL knowledge tests must be taken in person at authorized Driver License offices to ensure security, identity verification and test integrity. This is a federal requirement that applies to all states, not just Utah. In-person testing prevents cheating and ensures the person receiving the CDL is the one who demonstrated the knowledge.
What do I need to bring to the test?
Required documents:
- Utah driver's license
- Social Security card/number
- Proof of citizenship/legal residency (birth certificate, passport, permanent resident card, etc.)
- Proof of Utah residency (two documents showing your Utah address)
- Current DOT Medical Certificate (Form MCSA-5876)
- Completed CDL application
- Payment for applicable fees
For Hazmat: Additional identification documents for security threat assessment
Other:
- Reading glasses if needed
- Appointment confirmation
- Knowledge of your medical history for medical certification
All documents must be original or certified copies. Photocopies are not accepted. If you're unsure about document requirements, contact the Driver License Division before your appointment.
How early should I arrive?
Arrive 15-20 minutes early to allow time for:
- Document verification
- Application processing
- Fee payment
- Getting settled before the test begins
If you arrive late, you may have to reschedule. First-time applicants should arrive 30 minutes early to allow time for paperwork processing. Traffic and parking at Driver License offices can be unpredictable, so plan accordingly.
What if I pass?
You'll receive a Commercial Learner's Permit (CLP) valid for 12 months with these conditions:
- Must wait at least 14 days before taking the skills test
- Can only drive with a qualified CDL holder in the passenger seat
- No passengers except supervisors, trainees or examiners
- No hazmat transport
- Other restrictions based on vehicle type/endorsements
Specific endorsements you passed tests for will be included on your CLP.
What can I do with my CLP?
Practice driving commercial vehicles while supervised before taking your skills test. This practice time is crucial to develop the skills needed to pass the behind-the-wheel test.
How long are test scores valid?
Scores are valid for 12 months, same as your CLP. If your CLP expires before you complete the skills test, you'll need to retest all knowledge tests. There are no extensions on score validity, so plan to complete your skills test within the 12-month window to avoid having to retest. This ensures your knowledge is current when you get your full CDL.
What if I fail?
If you fail:
- Wait until the next business day to retest
- Only retest the sections you failed
- Use our practice tests to focus on weak areas
- Review incorrect answers to understand why they were wrong
- Consider studying with different methods if you're struggling with particular topics
There's no limit to how many times you can retest, but repeated failures may mean you need more preparation.
Sample question: What happens if you fail a section of the test?
- Wait 30 days before retesting
- Retest immediately at another location
- Wait until the next business day to retest
- Retest all sections, even those passed
Answer: C. Wait until the next business day to retest
How do I schedule the skills test after passing?
After holding your CLP for at least 14 days:
- Go to dld.utah.gov or call 801-965-4437
- Make sure your CLP is valid and medical certificate is current
- Arrange for a test vehicle that matches your CDL class
- Pay the skills test fee ($78.00)
- Choose a date and time from available slots
Skills tests are conducted at different locations than knowledge tests. The skills test consists of a pre-trip inspection, basic vehicle control and on-road driving demonstration. Make sure you're prepared for all three parts before scheduling.
Utah, home to the beautiful Glen Canyon and Fishlake National Forest, is one of the most beautiful and enjoyable states to drive in. A major producer of petroleum and mining, Utah companies are always looking to hire new truck drivers to help transport their goods across the country. Utah truck drivers most often travel along Interstate 15, through Provo, Salt Lake City, and Ogden.
However, before you can travel these routes as a commercial driver, you will need to first pass the UT CDL exam and earn your Utah Commercial Driver’s License (CDL). The test has proven to be challenging, and if you don’t want to be part of the unlucky group that walks away from the DMV empty-handed, it’s essential you prepare beforehand.
Our free 2025 Utah CDL practice tests are designed to help you ace the official UT CDL exam.
Why choose our UT CDL practice tests?
- Questions based on the latest 2025 Utah CDL manual
- Covers all CDL classes and endorsements
- Instant feedback to help you master the material
While the state does publish a helpful CDL manual, it’s equally important that you test your newly acquired knowledge. Our practice tests have been carefully designed to cover the very same content you’ll find on the real exam. Use the handy progress tracker to see how well you’re doing at any given moment while taking advantage of instant feedback and helpful explanations. Don’t leave your future to chance—take the first steps toward your CDL now with a free UT CDL practice test!