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

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

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 Maryland, what powers air brakes?

A) electricity

B) compressed air

C) springs only

D) hydraulic fluid

Question 2

In Maryland, what is governor cut-in pressure?

A) 150 psi

B) 60 psi

C) about 100 psi (85-100 range)

D) 200 psi

Question 3

In Maryland, what is governor cut-out pressure?

A) about 125 psi (120-135 range)

B) 200 psi

C) 90 psi

D) 60 psi

Question 4

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

A) 125 psi

B) 20 psi

C) 100 psi

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

Question 5

In Maryland, what are spring brakes?

A) steering brakes

B) service brakes

C) no brakes

D) emergency/parking brakes applying on air loss

Question 6

In Maryland, what is the dual air brake system?

A) single only

B) no dual

C) steering only

D) two separate systems for safety

Question 7

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

A) build pressure 100-125 psi and test

B) no check

C) mirrors only

D) drive at 50 psi

Question 8

In Maryland, what is brake lag in air brakes?

A) instant action

B) no lag

C) hydraulic only

D) delay between pedal and application

Question 9

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

A) no more than 4 psi per minute

B) no limit

C) 10 psi

D) 3 psi per week

Question 11

In Maryland, how test air compressor?

A) honk test

B) build 85 to 100 psi within 45 seconds

C) no test

D) visual only

Question 12

In Maryland, how test the low-air warning?

A) ignore it

B) disconnect buzzer

C) fan brakes down, warning by 60 psi

D) drive fast

Question 13

In Maryland, how test spring brakes?

A) no test

B) drive test

C) ask mechanic

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

Question 14

In Maryland, 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 Maryland, what are slack adjusters?

A) steering parts

B) link pushrod to brake cam

C) mirror arms

D) fuel lines

Question 16

In Maryland, what is manual slack adjustment rule?

A) anyone adjusts

B) never check

C) needs training; autos should not need it

D) daily manual

Question 17

In Maryland, what is brake adjustment limit?

A) half foot

B) no limit

C) 3 inches

D) about 1 inch pushrod travel

Question 18

In Maryland, what are foundation brakes?

A) engine brakes

B) the wheel brake mechanisms

C) retarders

D) parking only

Question 19

In Maryland, what is an application pressure gauge?

A) speedometer

B) shows service brake air used

C) oil gauge

D) fuel gauge

Question 20

In Maryland, what are supply pressure gauges?

A) coolant

B) show tank air pressure

C) tire pressure

D) voltage

US Maryland DMV CDL Air Brakes Test 1

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