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This CDL practice test study guide contains air brake system information for those who drive vehicles with air brakes; therefore needing an "Air Brakes"
endorsement on their CDL license.

49 CFR 383.95 Air Brake Restrictions.

  • If an applicant either fails the air brake component of the knowledge test, or performs the skills test in a vehicle not equipped with air brakes, the State
    shall indicate on the CDL, if issued, that the person is restricted from operating a CMV equipped with air brakes.

  • For the purposes of the skills test and the restriction, air brakes shall include any braking system operating fully or partially on the air brake principle.

Sections of this CDL Practice Test Study Guide include:

    Air Brake System Parts
    Dual Air Brake Systems  
    Inspecting Air Brakes
    Using Air Brakes
    Sample Test   
    Sample Test Answers
    Pre-Trip Inspection Memory Aid

This CDL practice test study guide is available for digital delivery only, so there are no shipping costs. This CDL practice test study guide can be downloaded
immediately after payment.
Commercial Drivers License (CDL) Practice Test Study Guide: Air Brakes
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CDL Practice Test Study Guide >> Air Brakes
Air Brakes Practice Test Study Guide
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