Free Wyoming CDL Practice Test — Updated for 2025

Getting your Commercial Driver’s License in Wyoming starts with the written knowledge tests. This page gives you free, simple Wyoming 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 short explanations for every answer so you can understand the material thoroughly before your exam.

Wyoming CDL at a Glance (Plain-English Summary)

  • Age & eligibility:
    You must be 18+ to drive within Wyoming and 21+ to drive interstate, carry passengers, or haul hazardous materials.
  • Valid license:
    You need a valid Wyoming driver’s license and a clean driving record.
  • Medical card:
    Most CDL drivers must maintain a valid DOT Medical Examiner’s Certificate.
  • Knowledge tests → CLP:
    Pass written exams for your CDL class (A/B/C) and any required endorsements to earn your Commercial Learner’s Permit (CLP).
  • ELDT:
    Federal Entry-Level Driver Training (ELDT) required for all new Class A/B and H/P/S endorsements before taking the skills test.
  • Skills test:
    Hold your CLP for at least 14 days before completing the pre-trip, basic control, and road tests.
  • Hazmat:
    Requires a TSA background check and successful completion of the Hazmat knowledge exam.
  • Testing location:
    Managed by the Wyoming Department of Transportation (WYDOT) and approved third-party examiners.

What’s on the Wyoming CDL Knowledge Tests

General Knowledge

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

Air Brakes

— parts, dual systems, stopping distance, and inspection.

Combination Vehicles

— coupling/uncoupling, rollover prevention, skids, and inspections.

Hazmat (H)

— hazard classes, placards, segregation, and emergency procedures.

Passenger (P) & School Bus (S)

— safe loading/unloading, emergencies, and evacuation.

Tankers (N)

— surge/slosh effects, rollover control, and inspection.

Doubles/Triples (T)

— converter dollies, coupling sequence, and trailer checks.

Pre-Trip

— full vehicle inspection covering all systems and components.

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
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General Knowledge Test 5

Emergency procedures and vehicle maintenance

📝 50 Questions 🎯 80% to pass
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General Knowledge Test 6

Final comprehensive review test

📝 50 Questions 🎯 80% to pass
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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
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Air Brakes Test 4

Advanced air brake systems and safety

📝 25 Questions 🎯 80% to pass
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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
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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
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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
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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
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Tanker Vehicle Test 2

Driving techniques for liquid cargo

📝 20 Questions 🎯 80% to pass
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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 Wyoming CDL

Additional certifications for specialized commercial driving

Q1) Who needs a CDL in Wyoming?

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

Q2) Minimum age?

18 intrastate, 21 interstate/hazmat/passenger.

Q3) Medical card required?

Yes, DOT medical exam required for most CDL holders.

Q4) What is ELDT?

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

Q5) CLP holding period?

Minimum 14 days before testing.

Q6) Testing authority?

Wyoming Department of Transportation (WYDOT) or third-party testers.

Q7) Passing score?

80% required to pass.

Q8) Hazmat background check?

TSA background check required for Hazmat endorsements.

Q9) What to bring on test day?

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