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 Vermont DMV CDL Air Brakes Test 6

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

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

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
True or false in Vermont: both black.
A) True
B) False
Question 2
True or false in Vermont: any way.
A) True
B) False
Question 3
True or false in Vermont: highway test.
A) True
B) False
Question 4
True or false in Vermont: shorter.
A) True
B) False
Question 5
Which is correct about CDL air brakes in Vermont?
A) springs only
B) hydraulic fluid
C) electricity
D) compressed air
Question 6
What powers air brakes?
A) springs only
B) hydraulic fluid
C) electricity
D) compressed air
Question 7
What is governor cut-in pressure?
A) about 100 psi (85-100 range)
B) 150 psi
C) 60 psi
D) 200 psi
Question 8
What is governor cut-out pressure?
A) about 125 psi (120-135 range)
B) 90 psi
C) 60 psi
D) 200 psi
Question 9
At what pressure does low-air warning activate?
A) at or before 60 psi (55-75 range)
B) 20 psi
C) 125 psi
D) 100 psi
Question 10
What are spring brakes?
A) emergency/parking brakes applying on air loss
B) no brakes
C) steering brakes
D) service brakes
Question 11
What is the dual air brake system?
A) single only
B) two separate systems for safety
C) no dual
D) steering only
Question 12
What must you do before driving after starting?
A) build pressure 100-125 psi and test
B) no check
C) mirrors only
D) drive at 50 psi
Question 13
What is brake lag in air brakes?
A) delay between pedal and application
B) instant action
C) hydraulic only
D) no lag
Question 14
What is the air loss limit (single vehicle)?
A) 10 psi
B) no limit
C) no more than 3 psi per minute
D) 1 psi per hour
Question 15
What is the air loss limit (combination)?
A) 3 psi per week
B) 10 psi
C) no more than 4 psi per minute
D) no limit
Question 16
How test air compressor?
A) visual only
B) honk test
C) build 85 to 100 psi within 45 seconds
D) no test
Question 17
How test the low-air warning?
A) disconnect buzzer
B) ignore it
C) fan brakes down, warning by 60 psi
D) drive fast
Question 18
How test spring brakes?
A) fan below 20-45 psi, parking knob pops
B) no test
C) drive test
D) ask mechanic
Question 19
What is a pre-trip air brake check order?
A) any order
B) governor, warning, spring, leak, service
C) drive first
D) no order
Question 20
What are slack adjusters?
A) link pushrod to brake cam
B) fuel lines
C) steering parts
D) mirror arms

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