CT CDL Practice Tests

• Permit Fee: $30 for Commercial Learner's Permit (CLP)
• License Fee: $70 for Commercial Driver's License (CDL)
• Minimum Age: 18 years for intrastate, 21 years for interstate operations
• Validity Period: CLP valid for 180 days, CDL valid for up to 4 years
• Required Examinations: General Knowledge, Air Brakes (if applicable), Combination Vehicles (if applicable), plus endorsement examinations
• Written Examination Pass Score: 80% on all knowledge examinations
• Mandatory Waiting Period: Must hold CLP at least 14 days before skills examination
• Medical Certificate: Required for all CDL applicants

The Connecticut CDL knowledge examination tests your knowledge of commercial motor vehicle regulations. You must pass this examination to get a Commercial Learner's Permit (CLP) before taking the skills test for a full CDL. It covers vehicle operation, safety regulations and traffic laws. The test is taken electronically at DMV offices throughout Connecticut. Questions cover both federal and Connecticut state regulations.

You need to take the test when getting your first CLP. You need it when adding a new endorsement or upgrading your CDL class. Take the test when reinstating an expired CDL over one year old. All applicants must take the general knowledge test plus additional tests for specific endorsements like Passenger, School Bus, Tank Vehicles, Hazmat or Doubles/Triples.

The test ensures commercial drivers have the knowledge to operate commercial motor vehicles safely. It verifies your understanding of regulations, safety practices and emergency procedures. Proper knowledge prevents accidents on public roads. Commercial motor vehicles can cause a lot of damage in accidents because of their size and weight. So proper training is required before operating these vehicles.

The test follows Federal Motor Carrier Safety Administration standards with Connecticut state regulations added. This ensures nationwide consistency in commercial driver qualifications. The test covers general operating skills, air brake operations and combination vehicles. Plus your Connecticut CDL will be recognized throughout the United States. This allows you to operate commercial motor vehicles across state lines when 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 thoroughly test your knowledge of safety procedures and regulations.

Sample question: When should you downshift when going down a hill?

• After you start down the hill
• Before you start down the hill
• Only when your speed exceeds the posted limit
• When your vehicle begins to gain too much speed

Answer: B. Before you start down the hill

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. If you fail one test but pass others, you'll only need to retake the failed test.

The test is only in English. Federal regulations require commercial drivers to read and speak English sufficiently. This ensures all drivers can read traffic signs and communicate with officials. You must be able to complete records and understand shipping documents. There are no exceptions to this language requirement for CDL testing in Connecticut.

No. You can't use notes, electronic devices, reference materials or calculators during the test. Testing areas are monitored. Using prohibited materials will result in test failure. All personal items must be stored in a designated area during testing. Prohibited items include cell phones, notes, CDL manuals and reference materials. Using prohibited materials could result in disqualification.

There is no time limit to complete the tests. 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 DMV gives you enough time to complete the tests without rushing. Accommodations may be available for documented learning disabilities.

• General Knowledge – Needed for all commercial driver’s licenses
• Air Brakes – Required to drive vehicles with air brakes
• Combination Vehicles – For driving tractor-trailers (Class A)
• Passenger (P) – For carrying passengers in a commercial vehicle
• School Bus (S) – Needed to drive a school bus
• Doubles/Triples (T) – For pulling two or three trailers
• Tank Vehicle (N) – For driving trucks that carry liquids or gases
• Hazmat (H) – Required to transport hazardous materials

Each test covers specific knowledge for that class of vehicle or type of operation. Take only the tests relevant to your commercial operating plans.

Sample question: When backing a commercial motor vehicle, you should:

• Rely only on your mirrors
• Back as quickly as possible to get out of traffic
• Use a helper whenever possible
• Always back toward the right side

Answer: C. Use a helper whenever possible

General Knowledge: Vehicle inspection procedures, basic control and shifting gears. It also covers space management, night operating and adverse weather conditions. The test addresses emergency procedures, cargo handling and accident procedures.

Air Brakes: System components and function, plus dual air brake systems. You'll learn to inspect air brakes and use them in various conditions. The test covers emergency stops and brake system failures.

Combination Vehicles: Coupling and uncoupling procedures and inspection points. Learn handling characteristics and rollover prevention techniques. The test addresses jackknife avoidance and turning techniques.

Passenger (P): Passenger loading and unloading procedures and emergency exits use. You'll learn passenger communication and accessibility requirements. The test covers handling disruptive passengers and railroad crossing standards.

School Bus (S): Student loading and unloading procedures and emergency evacuation. Learn about operating around schools and railroad crossing procedures. The test addresses student management and danger zones around the bus.

Doubles/Triples (T): Coupling and uncoupling multiple trailers and handling characteristics. Learn inspection procedures and handling problem identification. The test covers operating in adverse conditions.

Tank Vehicle (N): Liquid surge effects on handling and baffled versus non-baffled tanks. You'll learn loading and unloading procedures. The test addresses special braking for partially full tanks.

Hazmat (H): Hazardous materials classification and proper documentation. You'll learn loading and unloading procedures and operating rules. The test covers emergency response and security awareness.

Study all relevant sections of the Connecticut CDL Manual for your license class and endorsements Take our free practice tests regularly. Create a study schedule over several weeks rather than cramming. Make flashcards for difficult concepts and technical terms. Focus extra time on tough topics like air brakes and hazmat. Review pre-trip inspection procedures thoroughly. Pay attention to Connecticut specific regulations and prerequisites. Study vehicle systems until you understand how they work. Familiarize yourself with all required documents.

Consistent study over time is essential—avoid last-minute cramming. Many applicants overlook the technical details, particularly for endorsements.

Yes! Our free Connecticut practice tests help you find knowledge gaps. They build confidence through repeated practice. Our practice tests simulate the actual test environment and format. You can track your progress as you improve your score. Explanations for both correct and incorrect answers help you understand. Practice tests cover all CDL categories and are updated regularly.

Our practice tests are designed to be the most comprehensive study resource available for Connecticut CDL applicants, covering all test categories with questions similar to those on the actual examination.

Start studying 2-3 weeks before your test date. Understand concepts not just memorize answers. Take practice tests to find your weak areas. Get plenty of rest the night before your test. Eat a good meal before testing to stay focused. Read questions completely before answering. Look for keywords like "always," "never," or "except" that change the question. Choose safety oriented answers when unsure. Review all answers before submitting if possible. Stay calm during the test.

Sample question: What is the minimum tread depth for front tires on a commercial motor vehicle?

• 1/32 inch
• 4/32 inch
• 2/32 inch
• 1/8 inch

Answer: B. 4/32 inch

Practice tests cover the same topics and format as the actual test. Questions are different but style is the same. Practice tests reflect the difficulty level and content of the Connecticut CDL knowledge test. They help you get used to question formats and content coverage. They improve time management and critical thinking skills. Focus on understanding concepts not memorizing specific answers. The actual test draws from a large question bank.

Take the test at designated Connecticut DMV full-service offices. Not all DMV offices offer CDL testing. Check the DMV website or call ahead to confirm locations. Testing locations include Bridgeport, Danbury, Enfield, Hamden, New Britain, Norwalk, Norwich, Waterbury, and Wethersfield. These offices have the special equipment and staff to administer CDL tests.

Knowledge tests are walk-in only at full-service DMV offices. You can come in during business hours. Wait times vary by location and time of day. Come early to allow enough time to process. Coming in early in the day usually means shorter wait times. Bring all required documents to speed up the process.

For the most current information on testing times and locations, visit the Connecticut DMV Commercial Driver’s License page.

No. All CDL knowledge tests must be taken in person at authorized DMV offices. This is to ensure security, identity verification and test integrity. This is a federal requirement that applies to all states. In-person testing prevents cheating and confirms the person's identity. It ensures the person getting the CDL demonstrated the required knowledge.

• Bring your valid Connecticut driver's license
• Bring proof of your Social Security number
• Bring proof of citizenship or legal residency status
• Bring two documents showing your Connecticut address
• Bring your current DOT Medical Certificate (Form MCSA-5876)
• Complete the CDL application form
• Bring payment for applicable fees
• For Hazmat, bring additional identification for security assessment
• Bring reading glasses if needed

All documents must be original or certified copies. For a complete checklist of required documents, visit the Connecticut DMV Commercial Driver’s License Requirements page.

Come 30 minutes early to allow time for document verification. This gives time for application processing and fee payment. It gives time to get settled before the test begins. If you're late you may have to reschedule. First-time applicants should allow extra time for paperwork processing. Traffic and parking at DMV offices can be unpredictable so plan accordingly.

You'll get a Commercial Learner's Permit (CLP) valid for 180 days. The CLP has several conditions:

• You must wait at least 14 days before taking the skills test
• You can only drive with a qualified CDL holder in the passenger seat
• No passengers are allowed except supervisors, trainees or examiners
• No hazmat transport is allowed
• Other restrictions may apply based on vehicle type and endorsements

The endorsements you passed will be on your CLP.

Practice driving commercial motor vehicles while supervised. A qualified CDL holder must be in the passenger seat. This practice time develops the skills needed for the behind-the-wheel test. Practice all required maneuvers and pre-trip inspection procedures. Get familiar with the vehicle you'll use for the skills test. Practice time increases your chances of passing the skills test.

Scores are valid for 180 days, same as your CLP. If your CLP expires before you take the skills test you must retake all knowledge tests. There are no extensions on score validity. Plan to take your skills test within the 180-day window. This way your knowledge will be current when you get your full CDL.

You can retake a failed test another day. Only retest the sections you failed, not the ones you passed. Use practice tests to focus on weak areas of your knowledge. Review incorrect answers to understand why they were wrong. Try different study methods if struggling with certain topics. There's no limit to how many times you can retest. Remember repeated failures means you need more preparation.

Our practice tests are specifically designed to help you focus on areas where you need improvement. They provide detailed explanations for each question, helping you understand the concepts better before retesting.

Sample question: During the vehicle inspection test, how do you check the hydraulic brake system?

• Pump the brake pedal three times then hold it down for five seconds
• Roll forward and apply the brakes firmly
• Apply the parking brake and check for movement
• Start the engine and listen for air leaks

Answer: A. Pump the brake pedal three times then hold it down for five seconds

After you've held your CLP for at least 14 days call (860) 263-5096 to schedule. Make sure your CLP is current and your medical certificate is up to date. Arrange for a test vehicle for your CDL class. Fill out DMV Form R-229a and pay the examination fee. Choose a date and time from the available slots. Skills tests are held at different locations than knowledge tests.

The skills test consists of pre-trip inspection, basic vehicle control and on-road operating demonstration. Make sure you are prepared for all three parts before you schedule.