US Idaho DMV CDL Air Brakes Test 7

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

What is manual slack adjustment rule?

A) never check

B) daily manual

C) anyone adjusts

D) needs training; autos should not need it

Question 2

What is brake adjustment limit?

A) 3 inches

B) about 1 inch pushrod travel

C) no limit

D) half foot

Question 3

What are foundation brakes?

A) parking only

B) engine brakes

C) the wheel brake mechanisms

D) retarders

Question 4

What is an application pressure gauge?

A) oil gauge

B) speedometer

C) shows service brake air used

D) fuel gauge

Question 5

What are supply pressure gauges?

A) coolant

B) voltage

C) show tank air pressure

D) tire pressure

Question 6

What happens below 20-45 psi?

A) spring brakes fully apply

B) faster stop

C) horn sounds

D) Nothing happens

Question 7

How park with air brakes?

A) no brake needed

B) leave in neutral only

C) engine running

D) parking brake on, chock on grades

Question 8

What is fanning the brakes?

A) repeated apply-release (testing only)

B) warming brakes

C) driving technique

D) parking method

Question 9

What is stab braking (emergency)?

A) lock wheels

B) use parking brake

C) hard brake, release wheels, reapply

D) pump gently

Question 10

What is controlled braking?

A) alternate pedals

B) firm pressure without locking

C) release fully

D) lock all wheels

Question 11

How stop on slippery with ABS?

A) release all

B) lock wheels

C) firm steady, steer through

D) pump hard

Question 12

What is an alcohol evaporator for?

A) reduces winter moisture freeze

B) heats cab

C) cleans tanks

D) adds power

Question 13

How drain air tanks?

A) daily (manual) or auto valve check

B) yearly

C) never

D) only summer

Question 14

Why drain tanks?

A) noise

B) water/oil harms braking

C) looks

D) weight

Question 15

What is a dual air gauge reading?

A) tire temps

B) fuel levels

C) primary and secondary tank pressures

D) oil twice

Question 16

What if one system fails?

A) nothing changes

B) faster stop

C) other system still brakes (stop safely)

D) no brakes at all

Question 17

What are air lines colors?

A) no colors

B) both black

C) green/yellow

D) red emergency, blue service

Question 18

How connect glad hands?

A) loose ok

B) seals clean, locked, no leaks

C) taped

D) any way

Question 19

How test service brakes?

A) roll ~5 mph, brake firmly, check pull

B) ask others

C) no test

D) highway test

Question 20

What is stopping distance vs cars?

A) shorter

B) instant

C) same

D) much longer for trucks

US Idaho DMV CDL Air Brakes Test 7

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