Free Missouri CDL Practice Tests
Getting your CDL in Missouri starts with the written knowledge tests at the Missouri Department of Revenue. Those exams are built on the federal CDL standards, so the fastest way to prepare is to practice against the same material — free, unlimited retakes, every answer explained. Aim for consistent scores above 80%: that's the pass bar the real exams use.
Missouri practice tests by topic
- MO General Knowledge practice test
- MO Air Brakes practice test
- MO Combination Vehicles practice test
- MO Pre-Trip Inspection practice test
- MO Hazardous Materials (H) practice test
- MO Tanker (N) practice test
- MO Doubles & Triples (T) practice test
- MO Passenger (P) practice test
- MO School Bus (S) practice test
Sample practice questions
Hazmat placards are:
Answer: Diamond-shaped signs showing the hazard class — Diamond-shaped placards warn of the hazard class and material.
In fog you should use:
Answer: Low beams (and fog lights) — High beams reflect off the fog; use low beams to see better.
Alcohol first affects a driver's:
Answer: Judgment — Judgment goes first, so impaired drivers feel fine while being unsafe.
Official source: Missouri Department of Revenue
CDL licensing in Missouri is administered by the Missouri Department of Revenue. Fees, scheduling, forms, and the official Missouri CDL manual live on the official site: Missouri DOR — official CDL page (verified 2026-08-09).
Truckcess is not affiliated with or endorsed by the Missouri Department of Revenue. Our practice tests cover the federal CDL knowledge standards (49 CFR Part 383) that every state exam is built on; exact question counts, fees, and procedures vary by state and change over time — the official site is always the authority.
How the Missouri CDL process works
- Study the official Missouri CDL manual from the Missouri DOR — state exams draw from it.
- Pass the written knowledge tests to earn your Commercial Learner's Permit (CLP). You can take the CLP knowledge tests before completing ELDT.
- Complete Entry-Level Driver Training (ELDT) from a provider on the federal Training Provider Registry — required before your skills (driving) test. Truckcess provides the theory portion. (Exception: for the HazMat endorsement, ELDT theory is required before its knowledge test.)
- Pass the three-part skills test — vehicle inspection, basic control, and road driving.
The full prep course — every practice test, narrated lessons, the spoken pre-trip trainer — is one-time (Class A $69, Class B $59) with 12 months of access: mytruckcess.com/cdl.
CDL practice tests by state · Meet the Course Director · The completion certificate