Free Texas CDL Practice Test — Updated for 2025

Getting your Commercial Driver’s License in Texas starts with the written knowledge tests. This page gives you free, simple Texas CDL practice tests for every major section: General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Passenger, School Bus, Tankers, and Doubles/Triples. You’ll see one question at a time, get instant right/wrong feedback, and read a brief explanation to strengthen your understanding before test day.

Texas CDL at a Glance (Plain-English Summary)

  • Age & eligibility:
    You must be 18+ to drive within Texas and 21+ to drive interstate, passengers, or hazmat.
  • Valid license:
    You must have a valid Texas driver’s license and a clean record.
  • Medical card: Most drivers need a valid DOT Medical Examiner’s Certificate.
  • Knowledge tests → CLP:
    Pass all written exams for your CDL class (A/B/C) and endorsements to earn your Commercial Learner’s Permit (CLP).
  • ELDT:
    Entry-Level Driver Training required for Class A/B and H/P/S endorsements before taking the skills test.
  • Skills test:
    After 14 days with your CLP, complete the pre-trip, basic control, and road test.
  • Hazmat:
    Requires a TSA background check plus the Hazmat exam.
  • Testing managed by:
    the Texas Department of Public Safety (DPS) and certified third-party examiners.

What’s on the Texas CDL Knowledge Tests

General Knowledge

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

Air Brakes

— brake system, warning lights, stopping distance, and maintenance.

Combination Vehicles

— coupling/uncoupling, rollover risks, jackknife prevention, and inspections.

Hazmat (H)

— hazard classes, placards, parking, and emergency response.

Passenger (P) & School Bus (S)

— loading, unloading, emergencies, and mirror use.

Tankers (N)

— surge, rollover, and inspection items.

Doubles/Triples (T)

— converter dollies, coupling order, and stability.

Pre-Trip

— full inspection checklist.

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
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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
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
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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 — Texas CDL

Additional certifications for specialized commercial driving

Q1- Who needs a CDL in Texas?

Anyone operating vehicles 26,001 lb+ , towing 10,001+ lbs, carrying 16+ passengers, or hauling hazmat.

Q2- Minimum age?

18 intrastate, 21 interstate/hazmat/passenger.

Q3- Medical card required?

Yes, DOT medical exam required.

Q4- What is ELDT?

Entry-Level Driver Training , federally required before CDL skills or endorsement tests.

Q5- CLP holding period?

Minimum 14 days.

Q6- Testing authority?

Texas DPS or approved third-party testers.

Q7- Passing score?

80% pass.

Q8- Hazmat background check?

TSA background check required.

Q9- What to bring on test day?

Driver’s license, CLP, DOT medical card, ELDT proof, and compliant test vehicle.