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Missouri CDL Practice Test — General Knowledge, Air Brakes & Endorsements (2026)

Missouri's Commercial Driver License testing is administered by the State Highway Patrol's Driver Examination Division. Applicants must pass general knowledge, air brakes, and combination vehicle written tests, scoring at least 80% on each test. Endorsements are available for Hazardous Materials (H), Tank Vehicles (N), Doubles/Triples (T), Passenger (P), and School Bus (S). All endorsements require additional written tests. Applicants must have held a Commercial Learner's Permit (CLP) for at least 14 days before taking the CDL skills test. As of February 2022, new CDL applicants must complete an FMCSA-approved Entry-Level Driver Training (ELDT) program for the class and endorsements they are applying for. You must be at least 18 years old for intrastate driving or 21 for interstate driving or hazardous materials transport.

Sample Missouri CDL Practice Test Questions & Official Manual Citations (2026)

Below are 4 real sample questions from our Missouri cdl practice test bank. Every question in PassMyDMV cites the exact page and rule in the official Missouri manual so you understand the law behind every answer:

Sample Question 1 · Cdl Requirement Official Missouri Manual · Page 5

When does the manual say a driver must have a CDL for a single vehicle?

  • A. Only when the vehicle is used outside Missouri.
  • B. Only when the vehicle is towing more than 26,001 pounds.
  • C. When the vehicle has a GVWR of 26,001 pounds or more. Correct
  • D. Only when the vehicle has air brakes.
Why C. When the vehicle has a GVWR of 26,001 pounds or more. is correct: A single vehicle reaches CDL territory at a GVWR of 26,001 pounds or more. [Manual: Pages 1-6 — Pages 1-6, p. 5]
Manual excerpt (Official Missouri Manual · Page 5): “You must have a CDL to operate: Any single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more.”
Sample Question 2 · Combination Vehicle Official Missouri Manual · Page 5

Which combination vehicle requires a CDL under the manual?

  • A. Only tractor-trailers carrying hazardous materials.
  • B. A GCWR under 26,001 pounds with any small trailer.
  • C. A GCWR of 26,001 or more pounds with the towed vehicle over 10,000 pounds GVWR. Correct
  • D. Any vehicle towing a trailer over 5,000 pounds.
Why C. A GCWR of 26,001 or more pounds with the towed vehicle over 10,000 pounds GVWR. is correct: The manual ties this CDL requirement to both the combination rating and the towed vehicle rating. [Manual: Pages 1-6 — Pages 1-6, p. 5]
Manual excerpt (Official Missouri Manual · Page 5): “A combination vehicle with a gross combination weight rating (GCWR) of 26,001 or more pounds, provided the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds.”
Sample Question 3 · Passenger Capacity Official Missouri Manual · Page 5

A vehicle designed to carry how many passengers requires a CDL?

  • A. 16 or more passengers, including the driver. Correct
  • B. 10 or more passengers, excluding the driver.
  • C. 12 or more passengers, excluding the driver.
  • D. 20 or more passengers, including the driver.
Why A. 16 or more passengers, including the driver. is correct: The passenger threshold includes the driver in the count. [Manual: Pages 1-6 — Pages 1-6, p. 5]
Manual excerpt (Official Missouri Manual · Page 5): “A vehicle designed to transport 16 or more passengers (including the driver).”
Sample Question 4 · Hazmat Cdl Official Missouri Manual · Page 5

Which hazardous-material vehicle requires a CDL regardless of size?

  • A. Only a vehicle carrying nonregulated cargo across state lines.
  • B. Only a vehicle over 26,001 pounds carrying consumer goods.
  • C. Only a tanker with liquid cargo but no placards.
  • D. Any size vehicle that requires hazardous material placards or carries a listed select agent or toxin. Correct
Why D. Any size vehicle that requires hazardous material placards or carries a listed select agent or toxin. is correct: The manual says size does not matter when placards or listed select agents or toxins are involved. [Manual: Pages 1-6 — Pages 1-6, p. 5]
Manual excerpt (Official Missouri Manual · Page 5): “Any size vehicle which requires hazardous material placards or is carrying material listed as a select agent or toxin in 42 CFR part 73.”

Most-Tested Missouri CDL Practice Test Topics in Our 714-Question Bank

Our Missouri cdl practice test bank contains 714 active multiple-choice questions written directly from the official Missouri handbook. Here is how those questions break down across the core exam topics:

Official Manual Topic Area PassMyDMV Question Coverage
Railroad Crossings9 manual-cited questions
Stopping Distance5 manual-cited questions
Radioactive Materials5 manual-cited questions
Intersections4 manual-cited questions
Following Distance4 manual-cited questions
Leaks4 manual-cited questions
Basic Control Figures4 manual-cited questions
Turns4 manual-cited questions

Frequently Asked Questions: Missouri CDL Practice Test

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