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

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 Minnesota, what powers air brakes?
A) hydraulic fluid
B) springs only
C) electricity
D) compressed air
Question 2
In Minnesota, what is governor cut-in pressure?
A) 200 psi
B) 150 psi
C) 60 psi
D) about 100 psi (85-100 range)
Question 3
In Minnesota, what is governor cut-out pressure?
A) 90 psi
B) about 125 psi (120-135 range)
C) 60 psi
D) 200 psi
Question 4
In Minnesota, at what pressure does low-air warning activate?
A) at or before 60 psi (55-75 range)
B) 20 psi
C) 100 psi
D) 125 psi
Question 5
In Minnesota, what are spring brakes?
A) emergency/parking brakes applying on air loss
B) service brakes
C) steering brakes
D) no brakes
Question 6
In Minnesota, what is the dual air brake system?
A) no dual
B) two separate systems for safety
C) steering only
D) single only
Question 7
In Minnesota, what must you do before driving after starting?
A) drive at 50 psi
B) no check
C) mirrors only
D) build pressure 100-125 psi and test
Question 8
In Minnesota, what is brake lag in air brakes?
A) delay between pedal and application
B) hydraulic only
C) no lag
D) instant action
Question 9
In Minnesota, what is the air loss limit (single vehicle)?
A) 1 psi per hour
B) no limit
C) no more than 3 psi per minute
D) 10 psi
Question 10
In Minnesota, what is the air loss limit (combination)?
A) no limit
B) 3 psi per week
C) 10 psi
D) no more than 4 psi per minute
Question 11
In Minnesota, 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 Minnesota, 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 Minnesota, how test spring brakes?
A) ask mechanic
B) no test
C) fan below 20-45 psi, parking knob pops
D) drive test
Question 14
In Minnesota, what is a pre-trip air brake check order?
A) no order
B) any order
C) drive first
D) governor, warning, spring, leak, service
Question 15
In Minnesota, what are slack adjusters?
A) steering parts
B) fuel lines
C) link pushrod to brake cam
D) mirror arms
Question 16
In Minnesota, what is manual slack adjustment rule?
A) daily manual
B) never check
C) anyone adjusts
D) needs training; autos should not need it
Question 17
In Minnesota, what is brake adjustment limit?
A) about 1 inch pushrod travel
B) 3 inches
C) half foot
D) no limit
Question 18
In Minnesota, what are foundation brakes?
A) the wheel brake mechanisms
B) parking only
C) engine brakes
D) retarders
Question 19
In Minnesota, what is an application pressure gauge?
A) shows service brake air used
B) speedometer
C) oil gauge
D) fuel gauge
Question 20
In Minnesota, what are supply pressure gauges?
A) voltage
B) show tank air pressure
C) tire pressure
D) coolant

About This Test

For Drivers 16+ & CDL (USA, 51 States × 9 Topics) — State DMV permit and CDL General, Air Brakes, Combination, HazMat and Tanker per MUTCD & FMCSA state law. Section: DMV & CDL, USA.

DMV & CDL USA — 51 States (incl. DC) × 9 topics = 4,400+ tests: Road Signs (MUTCD), Traffic Laws, First Aid, Vehicle Technique, Motorcycle, CDL General Knowledge, Air Brakes, Combination, HazMat. State traffic law + FMCSA. 8×20Q per state-topic.

DMV Forum: no toxic driving shaming; respect first — auto-moderation → (content hidden) for profanity/insults in topics & replies.

Study Tips:

  • Study your state manual first
  • Master signs before laws
  • Do motorcycle/CDL separately
  • Drive kind — Forum kind