Arizona CDL Air Brakes
The CDL Air Brakes knowledge test, written from 49 CFR Parts 383, 393 and 396.
- Questions in this course
- 64
- The real test
- 25 questions, 20 correct to pass.
- Written from
- 49 CFR Parts 383, 393 and 396
This course prepares you for the Air Brakes knowledge test knowledge test. It is for any CDL driver who will drive a vehicle with air brakes. A driver who does not pass it gets an air brake restriction on the licence.
Arizona gives the test at its own driver licensing office, and sets its own fees and required documents, so confirm those with the state before you go.
This course drills 64 questions. Every one is written from 49 CFR Parts 383, 393 and 396 — the federal rules that apply in every state — and names the section that proves its answer. A state may add rules of its own on top of the federal minimum.
Official links
- 49 CFR Part 383 — CDL standards and endorsements — The endorsement knowledge lists (383.115 to 383.123)
- 49 CFR Part 393 — Parts and accessories — Brakes, coupling devices and emergency equipment
Questions
Common questions
How many questions are on the real test, and what is the pass mark?
25 questions, 20 correct to pass.
Where do the questions in this course come from?
Every question is written from 49 CFR Parts 383, 393 and 396, and names the passage or section that proves its answer.
Where do I take the CDL Air Brakes test in Arizona?
Arizona gives the test at its own driver licensing office, and sets its own fees and required documents, so confirm those with the state before you go.
Is this course free?
Part of every course is free: a slice of every topic and one short practice test a day. Full access is $5 a month for one course, or $20 a month for every course on the site.