What is the minimum passing score on the CDL General Knowledge test?

You must score at least 80% on the CDL General Knowledge test to pass in all U.S. states. With 50 multiple-choice questions, this means answering at least 40 correctly. The same 80% threshold applies to the Combination Vehicles, Air Brakes, and endorsement knowledge tests.

What endorsement tests can I take when applying for a CLP?

While holding a CLP, you can take knowledge tests for Passenger (P), School Bus (S), and Tank Vehicle (N) endorsements. HazMat (H) endorsement requires a full CDL, TSA background check, and fingerprinting. Double/Triple Trailers (T) is a CDL-only endorsement and cannot be added to a CLP.

What topics does the CDL General Knowledge test cover?

The test covers vehicle inspection, basic control, shifting gears, backing safely, seeing hazards, communicating, space management, speed management, night and extreme weather driving, railroad crossings, accident procedures, cargo handling, and driver fitness. Questions are drawn directly from the FMCSA CDL Manual used by your state DMV.

Who is eligible to apply for a Commercial Learner's Permit?

Applicants must be at least 18 years old for intrastate driving and 21 for interstate or HazMat transport. You need a valid state driver's license, proof of U.S. citizenship or lawful permanent residency, a clean 10-year driving record check, and a DOT medical examiner's certificate verifying physical fitness to drive.

How do I register for the CLP knowledge tests?

Visit your state DMV or licensing agency in person with your driver's license, Social Security card, proof of residency, DOT medical card, and payment for application fees (typically $15-$100 depending on state). Some states allow online appointment scheduling, but the knowledge tests must be taken at an approved DMV testing location.

How many questions are on the Combination Vehicles and Air Brakes tests?

The Combination Vehicles test has 20 multiple-choice questions, required for Class A applicants operating tractor-trailers. The Air Brakes test has 25 questions and is needed if your vehicle is equipped with air brakes. Both require an 80% passing score, meaning 16 correct on Combination and 20 correct on Air Brakes.

Can I drive a commercial vehicle alone with a CLP?

No. A CLP holder must always be accompanied by a CDL holder with the proper class and endorsements for the vehicle being driven, seated in the front seat. The CLP is strictly for behind-the-wheel training purposes and does not authorize solo operation or transporting passengers or cargo for hire.

How soon after getting a CLP can I take the CDL skills test?

Federal regulations require holding a CLP for a minimum of 14 days before attempting the CDL skills test. The skills test includes three parts: vehicle inspection, basic vehicle control, and an on-road driving exam. Starting February 2026, applicants must also complete FMCSA-approved Entry-Level Driver Training (ELDT) before testing.

CLP (Commercial Learner's Permit) Test: Study Guide

Get ready for your CLP (Commercial Learner's Permit) certification. Practice questions with step-by-step answer explanations and instant scoring.

CLP - Commercial Learner's Permit By Tony GarzaMay 7, 202661 min read

CLP (Commercial Learner's Permit) Test: Study Guide

⏱️90 MinutesTime Limit

📝50Questions

✅80%Pass Rate

💵$40Exam Fee

The CLP test is administered by state DMV offices and covers General Knowledge, Air Brakes, and Combination Vehicles. Passing this CLP license test allows you to begin supervised driving training. Try our DMV practice test.

Clp Practice Test - Commercial Learner's Permit study guide

CLP Practice Test Questions

Prepare for the CLP - Commercial Learner's Permit exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.

CLP - Commercial Learner's Permit Air Brak...

CLP Exam Questions covering - Commercial Learner's Permit Air Brake Systems. Master CLP Test concepts for certification prep.

CLP - Commercial Learner's Permit Basic Ve...

Free CLP Practice Test featuring - Commercial Learner's Permit Basic Vehicle Control. Improve your CLP Exam score with mock test prep.

CLP - Commercial Learner's Permit CDL Rule...

CLP Mock Exam on - Commercial Learner's Permit CDL Rules and Regulations. CLP Study Guide questions to pass on your first try.

CLP - Commercial Learner's Permit Combinat...

CLP Test Prep for - Commercial Learner's Permit Combination Vehicle Operations. Practice CLP Quiz questions and boost your score.

CLP - Commercial Learner's Permit General ...

CLP Questions and Answers on - Commercial Learner's Permit General Knowledge Core Concepts. Free CLP practice for exam readiness.

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CLP Mock Test covering - Commercial Learner's Permit Managing Space and Speed. Online CLP Test practice with instant feedback.

CLP - Commercial Learner's Permit Pre-Trip...

Free CLP Quiz on - Commercial Learner's Permit Pre-Trip Vehicle Inspection. CLP Exam prep questions with detailed explanations.

CLP - Commercial Learner's Permit Transpor...

CLP Practice Questions for - Commercial Learner's Permit Transporting Cargo Safely. Build confidence for your CLP certification exam.

CLP Driving in Adverse Conditions

CLP Test Online for Driving in Adverse Conditions. Free practice with instant results and feedback.

CLP Eligibility Requirements

CLP Study Material on Eligibility Requirements. Prepare effectively with real exam-style questions.

CLP Hours of Service Regulations

Free CLP Test covering Hours of Service Regulations. Practice and track your CLP exam readiness.

CLP Restrictions and Limitations

CLP Exam Questions covering Restrictions and Limitations. Master CLP Test concepts for certification prep.

CLP Testing and Knowledge

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CLP Training and Supervised Driving

CLP Mock Exam on Training and Supervised Driving. CLP Study Guide questions to pass on your first try.

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CLP Exam Flashcards

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🩺What is the medical requirement for a CLP?

You must possess a valid DOT medical card issued by a certified medical examiner to obtain your CLP.

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🪪How long is a CLP valid?

A Commercial Learner's Permit is typically valid for 180 days and can be renewed once for another 180 days.

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🚚What is the "P" endorsement?

The P endorsement authorizes a driver to operate a vehicle designed to transport passengers.

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🛑What is the minimum age for interstate CLP?

You must be at least 21 years old to operate a commercial motor vehicle in interstate commerce.

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🌬️What does the air brakes test cover?

It tests knowledge of air brake system components, usage, and safety checks required for vehicles with air brakes.

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🚛Can a CLP holder drive alone?

No, a CLP holder must always be accompanied by a valid CDL holder in the front passenger seat.

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CLP KNOWLEDGE TEST QUIZ

CLP Exam Study Guide

This CLP study guide breaks down essential information for your permit test. Review these common questions to prepare for the CLP exam.

What is the CLP exam?	The CLP exam is a written knowledge test required to obtain a Commercial Learner's Permit, allowing you to practice driving commercial vehicles.
Who needs to take the CLP test?	Anyone wishing to obtain a Commercial Driver's License (CDL) must first pass the CLP test.
What is the minimum age for a CLP?	Generally, you must be 18 for intrastate driving and 21 for interstate commerce to get a CLP permit.
Is the CLP test hard?	The CLP test can be challenging as it covers technical knowledge of air brakes, combinations, and regulations.

What is the CLP exam?

The CLP exam is a written knowledge test required to obtain a Commercial Learner's Permit, allowing you to practice driving commercial vehicles.

Who needs to take the CLP test?

Anyone wishing to obtain a Commercial Driver's License (CDL) must first pass the CLP test.

What is the minimum age for a CLP?

Generally, you must be 18 for intrastate driving and 21 for interstate commerce to get a CLP permit.

Is the CLP test hard?

The CLP test can be challenging as it covers technical knowledge of air brakes, combinations, and regulations.

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Expect to spend between $150 and $300 to obtain your CLP permit. This is a small investment compared to the potential earnings of a professional driver.

Clp Permit Test - Commercial Learner's Permit study guide

CLP RESTRICTIONS QUIZ

CLP ELIGIBILITY EXAM QUIZ

CLP Test Day Checklist

✓Valid Driver's License
✓Proof of Citizenship/Residency
✓Social Security Card
✓DOT Medical Card
✓Payment for Exam Fee
✓CDL Application Form
✓10-Year Driving Record (if applicable)
✓Glasses/Contacts (if needed)

📄CLP Practice Test Questions and Answers PDF

Start Your Trucking Career

You're just one test away from getting behind the wheel. Take our free CLP practice test now and ensure you pass on your first try. Don't risk a re-test fee!

CLP Renewal & Expiration

📅

Validity

180 Days

⏳

Wait Period

14 Days

You must hold your CLP for at least 14 days before you are eligible to take the CDL skills test. Use this time for supervised driving practice.

✅Pros

+Validates your knowledge and skills objectively
+Increases job market competitiveness
+Provides structured learning goals
+Networking opportunities with other certified professionals

❌Cons

−Study materials can be expensive
−Exam anxiety can affect performance
−Requires dedicated preparation time
−Retake fees apply if you don't pass

CLP Questions and Answers

About the Author

Tony GarzaASE Master Technician, BS Automotive Technology

ASE Master Technician & Automotive Certification Trainer

Universal Technical Institute

Tony Garza is an ASE Master Technician certified across all eight automotive service areas, with a Bachelor of Science in Automotive Technology from Universal Technical Institute. He has 22 years of shop experience and 9 years teaching ASE certification prep courses. Tony specializes in engine performance, electrical systems, and transmission diagnostics for certification candidates.