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

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