Free North Dakota CDL Practice Test — Updated for 2025

Getting your Commercial Driver’s License in North Dakota starts with the written knowledge tests. This page gives you free, simple North Dakota CDL practice tests for every major section: General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Passenger, School Bus, Tankers, and Doubles/Triples. You’ll answer one question at a time, get instant feedback, and see a short explanation for every answer. Use these tests to learn the rules, fix weak spots quickly, and gain real confidence before your exam.

North Dakota CDL at a Glance (Plain-English Summary)

  • Age:
    You must be 18+ to drive within North Dakota (intrastate) and 21+ to drive interstate, carry passengers, or transport hazardous materials.
  • license :
    You must hold a valid North Dakota driver’s license with a clean record.
  • Medical card:
    Most CDL holders must maintain a valid DOT Medical Examiner’s Certificate.
  • Knowledge tests → CLP:
    Pass the written tests for your CDL class (A/B/C) and endorsements to get your Commercial Learner’s Permit (CLP).
  • Skills test:
    After 14 days holding your CLP, take the pre-trip, basic control, and road test.
  • ELDT:
    Entry-Level Driver Training required for new Class A/B or H/P/S endorsements.
  • Hazmat:
    Requires TSA background check plus written knowledge test.
  • Tip:
    Testing by the North Carolina Division of Motor Vehicles (NCDMV) or authorized third-party testers.

What’s on the New York CDL Knowledge Tests

General Knowledge

— inspection, safety, emergencies, space/speed management, and road rules.

Air Brakes

— parts, dual systems, spring brakes, stopping distance, and brake use.

Combination Vehicles

— coupling, rollover prevention, jackknifing, and inspections.

Hazmat (H)

— classes, placards, documents, parking, and emergency procedures.

Passenger (P) & School Bus (S)

— safe loading, mirror checks, evacuation, and emergencies.

Tankers (N)

— surge, slosh, and inspection practices.

Doubles/Triples (T)

— converter dollies, coupling, and stability.

Pre-Trip

— inspection sequence for vehicle systems and safety gear.

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
Start Test

General Knowledge Test 3

Driving techniques and hazard awareness

📝 50 Questions 🎯 80% to pass
Start Test

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
Start Test

Air Brakes Test 2

Air brake inspection and testing procedures

📝 25 Questions 🎯 80% to pass
Start Test

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
Start Test

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
Start Test

Combination Vehicles Test 2

Inspection of combination vehicles

📝 20 Questions 🎯 80% to pass
Start Test

Combination Vehicles Test 3

Driving combination vehicles safely

📝 20 Questions 🎯 80% to pass
Start Test

Combination Vehicles Test 4

Backing and maneuvering techniques

📝 20 Questions 🎯 80% to pass
Start Test

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
Start Test

Hazmat Test 2

Loading and handling procedures

📝 30 Questions 🎯 80% to pass
Start Test

Hazmat Test 3

Documentation and placarding

📝 30 Questions 🎯 80% to pass
Start Test

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
Start Test

Passenger Vehicle Test 3

Passenger safety and emergency procedures

📝 20 Questions 🎯 80% to pass
Start Test

Passenger Vehicle Test 4

Special situations and regulations

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

School bus operation and student transportation safety

School Bus Test 1

Loading and unloading students

📝 20 Questions 🎯 80% to pass
Start Test

School Bus Test 2

Emergency exits and evacuation procedures

📝 20 Questions 🎯 80% to pass
Start Test

School Bus Test 3

Student management and safety

📝 20 Questions 🎯 80% to pass
Start Test

School Bus Test 4

Special hazards and situations

📝 20 Questions 🎯 80% to pass
Start Test
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 — North Dakota CDL

Additional certifications for specialized commercial driving

Q1- Who needs a CDL in North Dakota?

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

Q2- Minimum age?

18 intrastate, 21 interstate/hazmat/passenger.

Q3- Medical card required?

Yes, required for most CDL holders.

Q4- What is ELDT?

Entry-Level Driver Training , federally required before skills testing.

Q5- CLP holding period?

Minimum 14 days.

Q6- Testing authority?

NDDOT or third-party examiners.

Q7- Passing score?

80% required to pass.

Q8- Hazmat background check?

Yes, TSA clearance required.

Q9- What to bring on test day?

Driver’s license, CLP, DOT medical card, ELDT certificate, and proper vehicle.