UT CDL Practice Tests

• 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.

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.

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.

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).

• 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

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.

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.

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.

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.

• 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

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.

• 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.

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.

• 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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.