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

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

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 Idaho: both black.

A) True

B) False

Question 2

True or false in Idaho: any way.

A) True

B) False

Question 3

True or false in Idaho: highway test.

A) True

B) False

Question 4

True or false in Idaho: shorter.

A) True

B) False

Question 5

Which is correct about CDL air brakes in Idaho?

A) springs only

B) hydraulic fluid

C) compressed air

D) electricity

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) about 100 psi (85-100 range)

B) 60 psi

C) 150 psi

D) 200 psi

Question 8

What is governor cut-out pressure?

A) about 125 psi (120-135 range)

B) 90 psi

C) 60 psi

D) 200 psi

Question 9

At what pressure does low-air warning activate?

A) 20 psi

B) 100 psi

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

D) 125 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) steering only

B) two separate systems for safety

C) no dual

D) single only

Question 12

What must you do before driving after starting?

A) no check

B) build pressure 100-125 psi and test

C) drive at 50 psi

D) mirrors only

Question 13

What is brake lag in air brakes?

A) hydraulic only

B) no lag

C) instant action

D) delay between pedal and application

Question 14

What is the air loss limit (single vehicle)?

A) 1 psi per hour

B) 10 psi

C) no limit

D) no more than 3 psi per minute

Question 15

What is the air loss limit (combination)?

A) no limit

B) no more than 4 psi per minute

C) 10 psi

D) 3 psi per week

Question 16

How test air compressor?

A) honk test

B) visual only

C) build 85 to 100 psi within 45 seconds

D) no test

Question 17

How test the low-air warning?

A) drive fast

B) disconnect buzzer

C) ignore it

D) fan brakes down, warning by 60 psi

Question 18

How test spring brakes?

A) no test

B) ask mechanic

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

D) drive test

Question 19

What is a pre-trip air brake check order?

A) drive first

B) any order

C) no order

D) governor, warning, spring, leak, service

Question 20

What are slack adjusters?

A) steering parts

B) fuel lines

C) link pushrod to brake cam

D) mirror arms

US Idaho DMV CDL Air Brakes Test 6

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