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US Mississippi DMV CDL Air Brakes Test 2

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

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

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 Mississippi, what happens below 20-45 psi?
A) spring brakes fully apply
B) Nothing happens
C) faster stop
D) horn sounds
Question 2
In Mississippi, how park with air brakes?
A) leave in neutral only
B) parking brake on, chock on grades
C) no brake needed
D) engine running
Question 3
In Mississippi, what is fanning the brakes?
A) driving technique
B) repeated apply-release (testing only)
C) parking method
D) warming brakes
Question 4
In Mississippi, what is stab braking (emergency)?
A) hard brake, release wheels, reapply
B) pump gently
C) lock wheels
D) use parking brake
Question 5
In Mississippi, what is controlled braking?
A) alternate pedals
B) release fully
C) firm pressure without locking
D) lock all wheels
Question 6
In Mississippi, how stop on slippery with ABS?
A) lock wheels
B) pump hard
C) firm steady, steer through
D) release all
Question 7
In Mississippi, what is an alcohol evaporator for?
A) cleans tanks
B) heats cab
C) adds power
D) reduces winter moisture freeze
Question 8
In Mississippi, how drain air tanks?
A) never
B) only summer
C) yearly
D) daily (manual) or auto valve check
Question 9
In Mississippi, why drain tanks?
A) noise
B) weight
C) looks
D) water/oil harms braking
Question 10
In Mississippi, what is a dual air gauge reading?
A) oil twice
B) primary and secondary tank pressures
C) fuel levels
D) tire temps
Question 11
In Mississippi, what if one system fails?
A) other system still brakes (stop safely)
B) no brakes at all
C) faster stop
D) nothing changes
Question 12
In Mississippi, what are air lines colors?
A) no colors
B) both black
C) green/yellow
D) red emergency, blue service
Question 13
In Mississippi, how connect glad hands?
A) taped
B) any way
C) seals clean, locked, no leaks
D) loose ok
Question 14
In Mississippi, how test service brakes?
A) highway test
B) roll ~5 mph, brake firmly, check pull
C) ask others
D) no test
Question 15
In Mississippi, what is stopping distance vs cars?
A) much longer for trucks
B) same
C) shorter
D) instant
Question 16
True or false in Mississippi: compressed air.
A) True
B) False
Question 17
True or false in Mississippi: about 100 psi (85-100 range).
A) True
B) False
Question 18
True or false in Mississippi: about 125 psi (120-135 range).
A) True
B) False
Question 19
True or false in Mississippi: at or before 60 psi (55-75 range).
A) True
B) False
Question 20
True or false in Mississippi: emergency/parking brakes applying on air loss.
A) True
B) False

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