US Alabama DMV CDL Air Brakes Test 6

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

DMV Alabama — Cdl Air Brakes DMV — Alabama (USA, State Traffic Law) USA — Alabama State DMV & FMCSA (MUTCD) — USA

What is this test? for Alabama DMV Cdl Air Brakes permit/CDL, USA (MUTCD) — DMV — Alabama (USA, State Traffic Law) level, USA — Alabama.
Is this for you? For driver candidates in Alabama, USA — Cdl Air Brakes permit/CDL (16+, State DMV)
Section: DMV Alabama — Cdl Air Brakes · Education: High School & Adult (16+) · Part: DMV Alabama — Cdl Air Brakes · Country: USA · Region: USA — Alabama

The DMV written test is an important step measuring driver candidates' knowledge of traffic laws, first aid, and vehicle technology.

This test reinforces your theoretical knowledge and provides the fundamentals needed to pass the exam and become a safe driver.

By solving this test of 20 questions, you can both test your knowledge and identify the topics you need to improve.

Question 1

True or false in Alabama: both black.

A) True

B) False

Question 2

True or false in Alabama: any way.

A) True

B) False

Question 3

True or false in Alabama: highway test.

A) True

B) False

Question 4

True or false in Alabama: shorter.

A) True

B) False

Question 5

Which is correct about CDL air brakes in Alabama?

A) electricity

B) hydraulic fluid

C) compressed air

D) springs only

Question 6

What powers air brakes?

A) springs only

B) compressed air

C) electricity

D) hydraulic fluid

Question 7

What is governor cut-in pressure?

A) 200 psi

B) 150 psi

C) 60 psi

D) about 100 psi (85-100 range)

Question 8

What is governor cut-out pressure?

A) 200 psi

B) 90 psi

C) about 125 psi (120-135 range)

D) 60 psi

Question 9

At what pressure does low-air warning activate?

A) 125 psi

B) at or before 60 psi (55-75 range)

C) 100 psi

D) 20 psi

Question 10

What are spring brakes?

A) service brakes

B) emergency/parking brakes applying on air loss

C) no brakes

D) steering brakes

Question 11

What is the dual air brake system?

A) no dual

B) two separate systems for safety

C) single only

D) steering only

Question 12

What must you do before driving after starting?

A) drive at 50 psi

B) build pressure 100-125 psi and test

C) no check

D) mirrors only

Question 13

What is brake lag in air brakes?

A) delay between pedal and application

B) hydraulic only

C) no lag

D) instant action

Question 14

What is the air loss limit (single vehicle)?

A) no more than 3 psi per minute

B) 10 psi

C) no limit

D) 1 psi per hour

Question 15

What is the air loss limit (combination)?

A) 3 psi per week

B) no more than 4 psi per minute

C) 10 psi

D) no limit

Question 16

How test air compressor?

A) no test

B) honk test

C) visual only

D) build 85 to 100 psi within 45 seconds

Question 17

How test the low-air warning?

A) disconnect buzzer

B) fan brakes down, warning by 60 psi

C) ignore it

D) drive fast

Question 18

How test spring brakes?

A) ask mechanic

B) fan below 20-45 psi, parking knob pops

C) drive test

D) no test

Question 19

What is a pre-trip air brake check order?

A) no order

B) governor, warning, spring, leak, service

C) drive first

D) any order

Question 20

What are slack adjusters?

A) steering parts

B) fuel lines

C) mirror arms

D) link pushrod to brake cam

US Alabama DMV CDL Air Brakes Test 6

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