Free New Jersey CDL Practice Test — Updated for 2025

Getting your Commercial Driver’s License in New Jersey starts with the written knowledge tests. This page gives you free, simple New Jersey CDL practice tests for every major section: General Knowledge, Road Signs, Air Brakes, Combination Vehicles, Hazmat, Passenger, School Bus, Tankers, and Doubles/Triples. You’ll see one question at a time, get instant feedback, and read short explanations to learn faster and retain more.

New Jersey CDL at a Glance (Plain-English Summary)

  • Age:
    18+ for intrastate driving, 21+ for interstate, hazmat, or passengers.
  • license :
    You must already have a valid New Jersey driver’s license with a good record.
  • Medical card:
    Most CDL applicants must have a current DOT Medical Examiner’s Certificate.
  • Knowledge tests → CLP:
    Pass the written exams for your vehicle class and endorsements to earn your Commercial Learner’s Permit (CLP).
  • Skills test:
    After 14 days with your CLP, take the pre-trip, basic control, and on-road tests.
  • ELDT:
    Federal Entry-Level Driver Trainingapplies to all new Class A/B and H/P/S applicants.
  • Hazmat:
    Requires a TSA background check and written knowledge test.
  • Where to test:
    Testing handled by the New Jersey Motor Vehicle Commission (MVC) or certified third-party testers.
  • Tip:
    Always verify the latest CDL fees and testing information with the New Hampshire DMV before scheduling.

What’s on the New Jersey CDL Knowledge Tests

General Knowledge

— vehicle inspection, safe driving habits, speed/space control, emergency handling, and cargo rules.

Air Brakes

— air brake components, dual systems, stopping distance, and safety checks.

Combination Vehicles

— coupling and uncoupling, skids, rollover risks, and trailer inspections.

Hazmat (H)

— placards, documents, segregation, and emergency procedures

Passenger (P) & School Bus (S)

— loading, unloading, rail crossings, and emergency exits.

Tankers (N)

— surge/slosh control, safe speeds, and inspections.

Doubles/Triples (T)

— converter dollies, coupling order, and safe handling.

Pre-Trip

— key inspection points from engine to lights and brakes.

Required for All CDL Drivers

These tests are mandatory for all Commercial Driver's License applicants

About General Knowledge Tests

Basic rules, regulations, and safe driving practices for commercial vehicles

General Knowledge Test 1

Basic CDL knowledge and traffic laws

📝 50 Questions 🎯 80% to pass
Start Test

General Knowledge Test 2

Vehicle safety and inspection procedures

📝 50 Questions 🎯 80% to pass
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General Knowledge Test 3

Driving techniques and hazard awareness

📝 50 Questions 🎯 80% to pass
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General Knowledge Test 4

Transportation of cargo and passengers

📝 50 Questions 🎯 80% to pass
Start Test

General Knowledge Test 5

Emergency procedures and vehicle maintenance

📝 50 Questions 🎯 80% to pass
Start Test

General Knowledge Test 6

Final comprehensive review test

📝 50 Questions 🎯 80% to pass
Start Test
About Air Brakes Tests

Air brake systems, inspection, and operation procedures

Air Brakes Test 1

Basic air brake system components and operation

📝 25 Questions 🎯 80% to pass
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Air Brakes Test 2

Air brake inspection and testing procedures

📝 25 Questions 🎯 80% to pass
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Air Brakes Test 3

Emergency procedures and troubleshooting

📝 25 Questions 🎯 80% to pass
Start Test

Air Brakes Test 4

Advanced air brake systems and safety

📝 25 Questions 🎯 80% to pass
Start Test
About Pre-Trip Inspection Tests

Vehicle inspection procedures and safety checks

Pre-Trip Inspection Test 1

Engine compartment and cab inspection

📝 20 Questions 🎯 80% to pass
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Pre-Trip Inspection Test 2

Exterior vehicle inspection

📝 20 Questions 🎯 80% to pass
Start Test

Pre-Trip Inspection Test 3

Trailer and coupling system inspection

📝 20 Questions 🎯 80% to pass
Start Test

Endorsement Tests

Additional certifications for specialized commercial driving

About Combination Vehicles Tests

Tractor-trailers, truck and trailer combinations

Combination Vehicles Test 1

Coupling and uncoupling procedures

📝 20 Questions 🎯 80% to pass
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Combination Vehicles Test 2

Inspection of combination vehicles

📝 20 Questions 🎯 80% to pass
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Combination Vehicles Test 3

Driving combination vehicles safely

📝 20 Questions 🎯 80% to pass
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Combination Vehicles Test 4

Backing and maneuvering techniques

📝 20 Questions 🎯 80% to pass
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Combination Vehicles Test 5

Advanced combination vehicle operation

📝 20 Questions 🎯 80% to pass
Start Test
About Hazmat Tests

Hazardous materials transportation and safety

Hazmat Test 1

Hazmat classification and identification

📝 30 Questions 🎯 80% to pass
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Hazmat Test 2

Loading and handling procedures

📝 30 Questions 🎯 80% to pass
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Hazmat Test 3

Documentation and placarding

📝 30 Questions 🎯 80% to pass
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Hazmat Test 4

Emergency response and safety procedures

📝 30 Questions 🎯 80% to pass
Start Test
About Passenger Vehicles Tests

Buses and vehicles designed to transport passengers

Passenger Vehicle Test 1

Pre-trip inspection for passenger vehicles

📝 20 Questions 🎯 80% to pass
Start Test

Passenger Vehicle Test 2

Loading and unloading passengers

📝 20 Questions 🎯 80% to pass
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Passenger Vehicle Test 3

Passenger safety and emergency procedures

📝 20 Questions 🎯 80% to pass
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Passenger Vehicle Test 4

Special situations and regulations

📝 20 Questions 🎯 80% to pass
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About School Bus Tests

School bus operation and student transportation safety

School Bus Test 1

Loading and unloading students

📝 20 Questions 🎯 80% to pass
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School Bus Test 2

Emergency exits and evacuation procedures

📝 20 Questions 🎯 80% to pass
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School Bus Test 3

Student management and safety

📝 20 Questions 🎯 80% to pass
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School Bus Test 4

Special hazards and situations

📝 20 Questions 🎯 80% to pass
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About Tanker Vehicles Tests

Liquid cargo transportation and tank vehicle operation

Tanker Vehicle Test 1

Tanker vehicle inspection and safety

📝 20 Questions 🎯 80% to pass
Start Test

Tanker Vehicle Test 2

Driving techniques for liquid cargo

📝 20 Questions 🎯 80% to pass
Start Test

Tanker Vehicle Test 3

Loading, unloading, and emergency procedures

📝 20 Questions 🎯 80% to pass
Start Test
About Doubles/Triples Tests

Double and triple trailer combinations

Doubles/Triples Test 1

Coupling and inspection procedures

📝 20 Questions 🎯 80% to pass
Start Test

Doubles/Triples Test 2

Driving techniques and safety

📝 20 Questions 🎯 80% to pass
Start Test

Doubles/Triples Test 3

Emergency procedures and troubleshooting

📝 20 Questions 🎯 80% to pass
Start Test

FAQs — New Jersey CDL

Additional certifications for specialized commercial driving

Q1- Who needs a CDL in New Jersey?

Drivers of vehicles 26,001 lb+ , towing 10,001+ lbs, carrying 16+ passengers, or transporting hazmat.

Q2- Minimum age for CDL?

18 intrastate, 21 interstate/hazmat/passenger.

Q3- Medical card required?

Yes, DOT medical certificate mandatory.

Q4- ELDT requirement?

Entry-Level Driver Training , federally required for new CDL and endorsement applicants.

Q5- CLP holding period?

At least 14 days.

Q6- Who conducts CDL testing?

New Jersey MVC and approved third-party examiners.

Q7- Passing score?

80% minimum to pass each test.

Q8- Hazmat background check?

TSA background check required.

Q9- What to bring on test day?

Driver’s license, CLP, medical card, ELDT certificate, and your test vehicle.