Printable CDL Practice Tests & Cheat Sheets (2026 PDF Edition)
Don't just read the guide. Test yourself with the actual questions likely to appear on your CDL test.
In a digital world, many future truckers still prefer the feel of paper. You want something you can print out, highlight, and take with you to the diner or the break room.
We have compiled the Essential 2026 CDL Cheat Sheet content below. You can print this page or copy these notes.
Warning: While paper is great for memorizing facts, it cannot simulate the pressure of the computer exam. Use this list to study, but use our App to test yourself.
1. The "Magic Numbers" Cheat Sheet (Print This!)
If you memorize nothing else, memorize these numbers. They appear on almost every General Knowledge and Air Brakes exam.
| Item / System | The Rule / Number |
|---|---|
| Air Compressor Cut-In | 100 psi |
| Air Compressor Cut-Out | 125 - 140 psi |
| Low Air Warning | Must active by 60 psi |
| Spring Brakes Pop Out | 20 - 45 psi |
| Leak Rate (Combination) | Max 4 psi / minute (Applied) |
| Tire Depth (Steer) | 4/32 inch |
| Tire Depth (Drive/Trailer) | 2/32 inch |
| Following Distance | 1 sec per 10ft (add 1 sec if >40mph) |
| Warning Triangles | 10ft, 100ft, 200ft (Divided Hwy) |
2. General Knowledge "Must Knows"
Cargo Securement
- Tie-downs: 1 tie-down for every 10 feet of cargo.
- Minimum: Always at least 2 tie-downs (even for small loads).
- Inspection: Check cargo within the first 50 miles, then every 150 miles or 3 hours.
Night Driving
- High Beams: Dim within 500 feet of oncoming car; 500 feet when following.
- Overdriving: Driving so fast you can't stop within the reach of your headlights.
3. Printable Practice Questions (Sample)
Cover the answer key below and test yourself.
Q1: You are driving a 50-foot truck at 50 mph. How much following distance do you need?
- A. 5 seconds
- B. 6 seconds
- C. 7 seconds
Q2: If your truck has a dual air system and one system fails, what happens?
- A. The truck stops instantly.
- B. The spring brakes pop out.
- C. Either the front or rear brakes will not operate fully.
Q3: When should you downshift for a curve?
- A. Before entering the curve.
- B. In the middle of the curve.
- C. As you exit the curve.
Answer Key:
- Q1: B (6 seconds). Reason: 50ft/10 = 5 sec. Plus 1 sec for speed > 40mph.
- Q2: C. Reason: Dual systems provide redundancy.
- Q3: A. Reason: Shifting in a curve can cause wheel lockup and skidding.
4. The Problem with Paper (Why Apps Win)
While this printable guide is helpful, it has limits:
- It Gets Outdated: Paper doesn't update when the FMCSA changes the rules (like they did in 2022 and 2024).
- No Logic Training: Paper tells you "B is correct." It doesn't tell you why A and C are wrong.
- No Simulation: The real test is on a computer screen, not paper. You need to get used to the digital format.
Air Brakes (L)
Memorize critical PSI numbers and the 3-step L.A.B. check process.
Conclusion
Print this page, put it in your pocket, and review it during lunch breaks. But when you are ready to get serious, switch to our digital simulator to ensure you pass the 2026 exam on the first try.
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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