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

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