CDL · Air brakes

Prepanchor Air Brakes Drill for the CDL Knowledge Test

Every Prepanchor CDL pack is knowledge-test practice, not Entry-Level Driver Training (ELDT). It doesn't replace the training some drivers must complete.

For anyone who finds air brakes the hardest test, or needs to remove an air brake restriction.

  • Parts of the air brake system
  • Dual air brake systems
  • Inspecting air brakes
  • Using air brakes
  • The brake check

What's inside

  • 750+air brakes questions
  • Includedbrake-check sequence, step by step
  • 7page cheat sheet (PDF)

In Washington the air brakes test is 25 questions with 20 to pass. Other states can differ, so check your state's commercial driver manual or licensing office.

Here is every part of the pack. Items with a lock open the moment you buy.

Practice questions

By section and topic, each with a worked explanation

750+ questions

  1. Air Brakes Drill762 questions

Prepanchor Air Brakes Cheat Sheet for CDL Knowledge Tests

A printable PDF

7 pages

  1. Download the PDFPDF, 7 pages
  2. Air brakes on one page

Every count here comes from the pack's live content.

Try it before you buy

We'll send what you asked for, then study emails for this exam. First, one email to confirm your address. Unsubscribe in one click.

Everything together

Get this pack and everything else for $54.99

  • Air Brakes Drill$9.99
  • Class A Core Pack$39.99
  • Hazmat Endorsement PackIncluded
  • Endorsements Bundle$24.99
  • Printable Cheat-Sheet Set$7.99
  • Video Course$15
$54.99

$97.96 if bought one by one, so the bundle saves $42.97. Buy the Air Brakes Drill now and its price comes off the bundle later.

Get the bundle
  • We fix it or refund itIf a pack doesn't work because of a problem on our side.
  • Instant accessYour pack opens as soon as you pay.
  • Independent publisherOur own questions and guides, not affiliated with any exam body.
  • Secure checkoutPayments handled by Lemon Squeezy.

Questions

I own the Class A Core Pack. Do I need this?

Only if you want more air brakes practice. The Core Pack already has air brakes questions and mocks. The Drill adds more questions on air brakes alone, the brake-check sequence and a cheat sheet.

What do I get, and in what format?

Questions run in your browser and track your progress. The brake-check sequence is in your study area, and the cheat sheet is a PDF you can print.

Is this CDL training?

No. It is knowledge-test practice, not Entry-Level Driver Training (ELDT). FMCSA's ELDT rules apply to anyone getting a Class A or Class B CDL for the first time, upgrading from Class B to Class A, or getting a school bus, passenger or hazmat endorsement for the first time. That training comes from a registered training provider. Who needs ELDT, on fmcsa.dot.gov.

Is the test the same in every state?

No. Each state gives its own knowledge tests. Our mocks follow the lengths and pass marks Washington publishes, and the topics come from state CDL manuals. Check your own state's manual and licensing office for its format.

How long do I keep access?

12 months of online access. The PDFs you download are yours to keep.

Which devices does it work on?

Any phone, tablet or computer with an up-to-date browser. Your progress follows your account.

Is it in the app too?

No. The pack works in the web browser on any phone, tablet or computer, so there's nothing to install.

Can I get a refund?

Every pack is digital and opens the moment you pay, so we don't refund a change of mind. If something doesn't work because of a problem on our side and we can't fix it, we refund you. Refunds never depend on your test result. How refunds work.

Is this official?

No. Prepanchor is a private company, not affiliated with FMCSA, any state DMV or any other licensing agency. We write our own questions. Explanations are based on state CDL manuals, in our own words.

Free from licensing agencies

Your state's commercial driver manual is free, and the knowledge tests come from it. Washington's is linked here as an example: get the one from your own state. FMCSA explains who needs ELDT.

CDL Air Brakes Drill$9.99
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