Logo TestGru USA
Home Categories Forum Login Support
This test is for educational purposes only. Our platform is not operated by the College Board, DMV, or any official government agency. For official exam information, visit the relevant agency websites.

US Indiana DMV CDL Air Brakes Test 7

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

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

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
What is manual slack adjustment rule?
A) anyone adjusts
B) never check
C) daily manual
D) needs training; autos should not need it
Question 2
What is brake adjustment limit?
A) no limit
B) half foot
C) 3 inches
D) about 1 inch pushrod travel
Question 3
What are foundation brakes?
A) the wheel brake mechanisms
B) engine brakes
C) retarders
D) parking only
Question 4
What is an application pressure gauge?
A) fuel gauge
B) speedometer
C) shows service brake air used
D) oil gauge
Question 5
What are supply pressure gauges?
A) show tank air pressure
B) voltage
C) coolant
D) tire pressure
Question 6
What happens below 20-45 psi?
A) faster stop
B) spring brakes fully apply
C) Nothing happens
D) horn sounds
Question 7
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 8
What is fanning the brakes?
A) parking method
B) repeated apply-release (testing only)
C) warming brakes
D) driving technique
Question 9
What is stab braking (emergency)?
A) hard brake, release wheels, reapply
B) use parking brake
C) pump gently
D) lock wheels
Question 10
What is controlled braking?
A) firm pressure without locking
B) alternate pedals
C) lock all wheels
D) release fully
Question 11
How stop on slippery with ABS?
A) release all
B) pump hard
C) firm steady, steer through
D) lock wheels
Question 12
What is an alcohol evaporator for?
A) cleans tanks
B) reduces winter moisture freeze
C) adds power
D) heats cab
Question 13
How drain air tanks?
A) never
B) daily (manual) or auto valve check
C) only summer
D) yearly
Question 14
Why drain tanks?
A) water/oil harms braking
B) weight
C) noise
D) looks
Question 15
What is a dual air gauge reading?
A) primary and secondary tank pressures
B) fuel levels
C) tire temps
D) oil twice
Question 16
What if one system fails?
A) other system still brakes (stop safely)
B) nothing changes
C) faster stop
D) no brakes at all
Question 17
What are air lines colors?
A) no colors
B) green/yellow
C) both black
D) red emergency, blue service
Question 18
How connect glad hands?
A) seals clean, locked, no leaks
B) taped
C) any way
D) loose ok
Question 19
How test service brakes?
A) highway test
B) roll ~5 mph, brake firmly, check pull
C) ask others
D) no test
Question 20
What is stopping distance vs cars?
A) same
B) much longer for trucks
C) instant
D) shorter

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