Class B CDL Practice Test 2026: Study Guide & Requirements
Don't just read the guide. Test yourself with the actual questions likely to appear on your CDL test.
Not everyone wants to drive an 18-wheeler. The Class B CDL is the perfect license for drivers who want to operate dump trucks, concrete mixers, garbage trucks, and delivery box trucks.
Air Brakes (L)
Memorize critical PSI numbers and the 3-step L.A.B. check process.
The best part? The exam is easier because you can skip the "Combination Vehicles" section. This guide focuses on exactly what Class B drivers need to know for 2026.
1. The Class B "Curriculum"
To get your Class B Permit (CLP), you only need to study two main sections of the CDL Manual:
- General Knowledge: (All drivers) Safety, cargo control, night driving.
- Air Brakes: (Crucial) Almost all Class B trucks use air brakes. Code L restriction applies if you fail this.
What to SKIP:
- You do NOT need to study Combination Vehicles.
- You do NOT need to study Doubles & Triples.
2. Pre-Trip Inspection for Class B
The pre-trip is slightly different. Since you don't have a trailer, you don't need to check:
- Fifth Wheel (Apron, Skid plate, Release arm).
- Kingpin.
- Air lines between tractor and trailer (Glad hands).
However, you must still perform a full engine compartment check, cab check, and the critical Air Brake Leak Down Test.
3. Class B Practice Questions
Even though a Class B truck is smaller than a semi, gravity works the same way. You must rely on engine braking to save your service brakes.
Dump trucks have a high center of gravity, especially when loaded. This makes them prone to tipping over in curves. Slow down before turns!
Can I upgrade to Class A later?
Yes, but it's not just a simple "upgrade." You will have to take the Combination Vehicles written test and **retake the entire Road Skills test** in a Class A vehicle. It's often better to get Class A from the start if you think you might need it.
Explore More Practice Tests
General Knowledge
The #1 starting point. Covers vehicle inspections & basic road safety rules.
HazMat (H)
Master the placarding tables, shipping papers, and TSA requirements.
Air Brakes (L)
Memorize critical PSI numbers and the 3-step L.A.B. check process.
Combination
Learn the 5-step coupling checklist and rollover prevention techniques.
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