Missouri CDL Practice Test and Test Prep (2026)
Missouri gives CDL tests through Missouri Department of Revenue (DOR) — Driver License Bureau. Here is what you will be tested on, which of our practice quizzes match each test, and what the skills test involves in Missouri.
Knowledge tests for a Missouri permit
- General Knowledge (all applicants) — practice General Knowledge (60 questions)
- Combination Vehicles (Class A) — practice Combination Vehicles (30 questions)
- Air Brakes (if your vehicle has them) — practice Air Brakes (40 questions)
- Any endorsement tests you need (P, S, H, N, T)
Permit minimum age: 18 (in-state driving) or 21 (interstate). Holding period before the skills test: 14 days. Permit validity: 360 days.
Missouri endorsement tests and practice
- Hazmat (H) practice
Missouri notes for this endorsement
Requires the hazmat knowledge test at an MSHP station plus a TSA Security Threat Assessment. Missouri is NOT a TSA self-managed state — you enroll through TSA's vendor (IdentoGO/IDEMIA), apply online or call 855-347-8371, pay the TSA fee, and complete fingerprinting. The hazmat written test must be re-passed at every renewal; minimum age 21. Not allowed on a CLP.
- Tanker (N) practice
Missouri notes for this endorsement
Tank vehicles.
- Passenger (P) practice
Missouri notes for this endorsement
Passenger; requires additional knowledge and skills testing; allowed on a CLP for training.
- School bus (S) practice
Missouri notes for this endorsement
School bus; requires additional testing and (recent change) is now allowed on a CLP.
- Doubles/triples (T) practice
Missouri notes for this endorsement
Doubles/triples. Not allowed on a CLP.
The Missouri skills test
Components: Pre-trip vehicle inspection, Basic control skills, On-road driving test.
Test vehicle: You must supply a vehicle of the same type and class you intend to drive; the state does not provide one.
Where and how to book: Skills tests are administered by the Missouri State Highway Patrol's Driver Examination Division or by a certified Missouri third-party tester, by appointment only (unlike regular license tests). CDL sites exist within each Highway Patrol Troop, and the Jefferson City CDL site tests weekdays. Since October 2023, MSHP and DOR train all state and third-party examiners to the modernized standard.
Waits and retests: Wait times vary by location and tester; Missouri does not publish a statewide figure.
Practice the inspection part with our pre-trip inspection guide. Research dated 2026-10-12; confirm testing details with Missouri.
All practice tests
- General Knowledge (60 questions)
- Air Brakes (40 questions)
- Combination Vehicles (30 questions)
- Hazardous Materials (H) (30 questions)
- Tank Vehicles (N) (25 questions)
- Passenger (P) (25 questions)
- School Bus (S) (25 questions)
- Doubles/Triples (T) (20 questions)
Ready to apply? See the full Missouri CDL requirementsor build your Missouri checklist.