Yes. All PassMyCDL YouTube videos are free to watch. We also sell paid endorsement packs from $49 to $149 that include deeper video lessons, study guides, and practice tests.

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Q: What's the best way to study for the CDL test?

Read your state's CDL manual, then use video explainers to understand the concepts visually. Focus on air brakes first because it is the most failed section, then take practice tests until you score 90 percent or better consistently.

Q: How many questions are on the CDL air brakes test?

The CDL air brakes knowledge test has 25 questions. You need 20 correct answers, or 80 percent, to pass and remove the air brake restriction.

Q: Can I study for the CDL test on my phone?

Yes. PassMyCDL videos, study guides, and blog content are mobile-friendly, and many drivers study on their phone the night before the DMV exam.

Q: Is the CDL test hard?

The general knowledge test is difficult for first-time test takers because the questions are specific and air brakes is heavily failed. With the FMCSA manual, clear video explanations, and enough practice, most drivers can pass on the first or second attempt.

Video-based exam prep built directly on the FMCSA manual. Animated diagrams. Real exam questions explained. The only CDL prep with trucker finance breakdowns.

Start Free - Watch Air Brakes Explained → View All Courses

100% sourced from the FMCSA CDL Manual
Stop guessing. Know the answers.
Watch free on YouTube first

400,000+

air brake tests taken yearly

4.9/5

student rating

60+

free videos on YouTube

100%

FMCSA sourced

Endorsement Packs - Everything You Need to Pass

Each pack includes video lessons, printable study guide, and a 50-question practice test.

Air Brakes

Restriction Removal

$49

14 video lessons
SVG animated diagrams
Printable study guide
50 practice questions
Exam answer key

Get the Air Brakes Pack - $49

Pass or your money back14 video lessons + study guide + practice test. 30-day refund if you fail after completing the pack.

400,000+ tests/year
Most failed CDL topic

Highest Value

Hazmat

Endorsement Mastery

$79

16 video lessons
TSA assessment walkthrough
Printable study guide
50 practice questions
Exam answer key

Get the Hazmat Pack - $79

Pass or your money backHazmat videos, TSA checklist, study guide, and practice test included.

30 exam questions
TSA assessment included

Tanker

Liquid Surge Control

$49

10 video lessons
Liquid surge visual demos
Printable study guide
50 practice questions
Exam answer key

Get the Tanker Pack - $49

Pass or your money backVideo lessons, surge-control visuals, study guide, and test prep in one pack.

Liquid surge physics
explained visually

Save $77

Full Bundle

All Endorsements

$149

All 4 endorsement packs
40+ video lessons total
4 printable study guides
200 practice questions
Priority email support

Get the Full Bundle - $149

Pass or your money backAll endorsement packs, all study guides, all practice tests, one price.

All 4 endorsements
one purchase

Why thousands of truckers choose PassMyCDL

Exam-specific accuracy

Every answer sourced directly from the FMCSA CDL Manual. Cross-checked against 3 state practice test banks. We get the answers right. Our competitors do not.

Finance breakdowns

The only CDL channel that shows you the money. Owner-operator ROI. Salary by route type. Make the career decision with real numbers.

Video explanations

Not flashcards. Not PDFs. Animated SVG diagrams that show you how air brakes actually work. Understand it, do not just memorize it.

Watch free - no account needed

Is a CDL worth it in 2026?

$58,000

avg company driver salary

$95,000

avg owner-op net income

$4,500

avg CDL school cost

Most CDL prep stops at the test. We show you what comes after. Salary comparisons. Owner-operator startup costs. Tax deductions most drivers miss. Real numbers, not marketing.

Watch: Is a CDL Worth It? →

CDL Questions People Ask Before They Buy Study Help

Is PassMyCDL free?

Yes. All PassMyCDL YouTube videos are free. We also offer paid endorsement packs from $49 to $149 with more video lessons, study guides, and practice tests.

What's the best way to study for the CDL test?

Start with your state's CDL manual, then use video explainers to understand the concepts visually. Focus on air brakes first, because it is the most failed section, and keep taking practice tests until you score 90 percent or better consistently.

How many questions are on the CDL air brakes test?

The air brakes knowledge test has 25 questions. You need 20 correct answers, or 80 percent, to pass and remove the air brake restriction.

Can I study for the CDL test on my phone?

Yes. PassMyCDL videos, PDFs, and blog posts work on mobile, which matters because many drivers study on their phone late at night before the DMV test.

Is the CDL test hard?

It can be hard because the questions are specific and the air brakes section trips up a lot of first-time test takers. With the FMCSA manual, clear video explanations, and enough practice, most people pass on the first or second attempt.