US California DMV CDL Air Brakes Test 1

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

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

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

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

In California, what powers air brakes?

A) springs only

B) compressed air

C) hydraulic fluid

D) electricity

Question 2

In California, what is governor cut-in pressure?

A) 150 psi

B) 200 psi

C) about 100 psi (85-100 range)

D) 60 psi

Question 3

In California, what is governor cut-out pressure?

A) 90 psi

B) 60 psi

C) 200 psi

D) about 125 psi (120-135 range)

Question 4

In California, at what pressure does low-air warning activate?

A) 100 psi

B) 125 psi

C) 20 psi

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

Question 5

In California, what are spring brakes?

A) steering brakes

B) service brakes

C) emergency/parking brakes applying on air loss

D) no brakes

Question 6

In California, what is the dual air brake system?

A) steering only

B) single only

C) two separate systems for safety

D) no dual

Question 7

In California, what must you do before driving after starting?

A) no check

B) mirrors only

C) drive at 50 psi

D) build pressure 100-125 psi and test

Question 8

In California, what is brake lag in air brakes?

A) hydraulic only

B) instant action

C) delay between pedal and application

D) no lag

Question 9

In California, what is the air loss limit (single vehicle)?

A) no limit

B) no more than 3 psi per minute

C) 10 psi

D) 1 psi per hour

Question 10

In California, what is the air loss limit (combination)?

A) no more than 4 psi per minute

B) 10 psi

C) 3 psi per week

D) no limit

Question 11

In California, how test air compressor?

A) build 85 to 100 psi within 45 seconds

B) honk test

C) no test

D) visual only

Question 12

In California, how test the low-air warning?

A) drive fast

B) ignore it

C) fan brakes down, warning by 60 psi

D) disconnect buzzer

Question 13

In California, how test spring brakes?

A) drive test

B) no test

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

D) ask mechanic

Question 14

In California, what is a pre-trip air brake check order?

A) drive first

B) no order

C) governor, warning, spring, leak, service

D) any order

Question 15

In California, what are slack adjusters?

A) fuel lines

B) steering parts

C) mirror arms

D) link pushrod to brake cam

Question 16

In California, what is manual slack adjustment rule?

A) daily manual

B) anyone adjusts

C) never check

D) needs training; autos should not need it

Question 17

In California, what is brake adjustment limit?

A) half foot

B) about 1 inch pushrod travel

C) no limit

D) 3 inches

Question 18

In California, what are foundation brakes?

A) retarders

B) engine brakes

C) the wheel brake mechanisms

D) parking only

Question 19

In California, what is an application pressure gauge?

A) oil gauge

B) fuel gauge

C) speedometer

D) shows service brake air used

Question 20

In California, what are supply pressure gauges?

A) voltage

B) show tank air pressure

C) tire pressure

D) coolant

US California DMV CDL Air Brakes Test 1

Test Complete

About This Test