Intermediate100% Free

CDL Air Brakes Test

Air brake parts, dual systems, inspection and using air brakes.

Exam at a glance

Questions

25

Time limit

30 min

Passing

You must correctly answer at least 20 questions (80%) to pass.

Practice bank

252 Qs

What the exam covers

  1. 1

    Air Brake System Parts

    30% · 65 lessons

  2. 2

    Dual Air Brake Systems

    25% · 45 lessons

  3. 3

    Inspecting Air Brake Systems

    30% · 50 lessons

  4. 4

    Using Air Brakes

    15% · 23 lessons

How to prepare on Step2Study

  1. 1. Learn

    Work through the Academy modules — short lessons with key facts and memory tricks.

  2. 2. Practice

    Take the numbered practice tests with instant feedback, flashcards and mental maps.

  3. 3. Simulate

    Sit a full timed simulation to check you are ready for exam day.