Missouri General Knowledge Test
We've included questions about navigating I-70's construction zones and winter ice - you'll face the same on test day.
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About the Missouri General Knowledge Test
Missouri's roads throw a lot at you. You'll drive I-44's long hills near Rolla, cross the Mississippi on I-270, and haul through farm country on US-60. Winter ice, summer construction, and sudden fog in the Bootheel - our test covers every condition Missouri drivers face.
We built this practice test from the official Missouri CDL manual. Each question mirrors what you'll see at the DMV. Focus on air brakes, pre-trip inspection, and cargo handling. Missouri's agriculture industry means you'll often haul grain, livestock, or equipment - our questions teach you the weight and securement rules you need.
Missouri uses the same 50-question General Knowledge test as most states, but they add state-specific items about local laws. You'll need 40 correct to pass (80%). Our practice tests track your weak spots so you can study smarter, not longer.
What This Test Covers
- Safe driving practices – Missouri's winding two-lane highways (like MO-19) demand constant attention to curves and blind hills.
- Vehicle inspection – Pre-trip checks help you avoid breakdowns on remote stretches of I-70 where help is miles away.
- Basic control and air brakes – Missouri's steep grades on I-44 mean you must master brake lag and stopping distances.
- Cargo handling and securement – Hauling hay bales or livestock on US-60? You'll learn tie-down rules that keep your load legal.
- Hazard awareness – Fog in the Bootheel and black ice in the Ozarks make hazard recognition critical for Missouri drivers.
- Traffic laws and signaling – Missouri's right-on-red and merge laws differ from other states; we cover them in detail.
Study Tips
Start with the Missouri CDL manual – it's free online at dor.mo.gov. Read the General Knowledge section twice. Then take our practice test to find your weak spots. Focus on air brakes and combination vehicles – those trip up most drivers.
Missouri DMV offices usually let you walk in for the knowledge test. Bring your Social Security card, proof of residency, and $5 fee. If you fail, you can retake the same day after paying again. Don't rush – study until you score 90% on practice tests, then schedule your real exam.
Missouri DMV Information
You can take the Missouri CDL General Knowledge test at any full-service DMV office. Most accept walk-ins, but call ahead – some offices close for lunch or have limited hours. The fee is $5 per attempt. Bring your current driver's license, Social Security card, and two proofs of Missouri residency (utility bill, bank statement).
Skills tests require an appointment. Missouri uses a centralized scheduling system through the DMV website. The skills test fee is $20 for the pre-trip and basic control, plus $20 for the road test. You'll drive a truck that meets federal requirements – make sure your vehicle's lights, brakes, and tires are in top shape.
Special note: If you already hold a Missouri CDL and want to add endorsements (tank, hazmat, doubles/triples), you only need the knowledge tests – no skills test. Visit dor.mo.gov for a list of offices that offer CDL services.
Frequently Asked Questions
Related Resources
Other Missouri CDL Practice Tests
Test Details
- State: Missouri
- Test: General Knowledge Test
- Questions: 140
- Passing Score: 80%
- Time Limit: 60 minutes
- Cost: Free
Need ELDT Training?
If you're getting your first CDL, you need ELDT theory training before your skills test.
Start Free ELDT TrainingQuick Topics
- Safe driving & hazard awareness
- Air brake basics
- Vehicle inspection