Missouri CDL Class B Practice Exam 2026
Longer than the real exam on purpose: the official Missouri test has 50 questions (80% to pass) - extra practice here means fewer surprises there.
A full 366-question exam simulation for the MO Class B CDL - single vehicles over 26,001 lbs GVWR.
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About the Missouri Class B CDL exam simulator
The Missouri Class B CDL practice test gets you ready for straight trucks, buses, and other single heavy vehicles. Whether you searched for a class B CDL practice test, a class B license test, or a CDL class B test, this simulator delivers the general knowledge questions every Missouri commercial driver must master in 2026.
A Class B license covers a single vehicle rated over 26,001 pounds, including dump trucks, box trucks, and large buses, and it can tow a trailer under 10,000 pounds. It sits between the combination-rig Class A and the Class C commercial driver's license, which handles smaller vehicles carrying hazmat or 16 or more passengers. Knowing the classes of CDL driver's license helps you pick the right path.
The written exam is identical across classes: 50 questions, 80 percent to pass, 40 correct answers. Missouri's dense delivery routes around Kansas City and St. Louis keep Class B drivers busy, so study the Missouri Commercial Driver License Manual and run this class B license exam prep until you pass with room to spare.
Every question traces back to the Missouri CDL Manual - skim the right-of-way and signs chapters before your retake.
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All state tests unlocked
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Exam Simulator
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English + Spanish
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Fix It Bank
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🎓 Exam Mode - just like the real thing
- ⏱ 275-minute timer, same as your DMV
- 🙈 No hints, no instant feedback
- 🔀 Questions come in random order
- ❌ More than 73 mistakes ends the exam - like the real one
- 💾 Your practice progress on this test stays saved

