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US Tennessee DMV CDL Combination Vehicles Test 7

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

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

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 trailers jackknifing?
A) parking trick
B) tractor-trailer folds in skid
C) turning wide
D) coupling step
Question 2
How avoid jackknife?
A) steady braking, no sudden moves
B) slam brakes
C) speed up
D) jerk wheel
Question 3
How handle doubles in wind?
A) speed up
B) ignore
C) slow, extra space, firm grip
D) stop in lane
Question 4
What is rearward amplification?
A) brake force
B) last trailer moves most
C) fuel use
D) engine power
Question 5
How lane change with doubles?
A) tailgate first
B) no signal
C) slower, more space, signal long
D) quick swerve
Question 6
What is a lowboy trailer?
A) food trailer
B) low deck for heavy equipment
C) tanker
D) van
Question 7
How secure converter dolly?
A) safety chains, lights connected
B) fast tow
C) no lights
D) loose tow
Question 8
What is kingpin inspection?
A) brand
B) not bent, cracks, locked
C) grease amount
D) paint color
Question 9
What gap between fifth wheel?
A) not checked
B) 1 inch ok
C) no gap (tight coupling)
D) any gap
Question 10
How uncouple safely?
A) fast pull
B) any slope
C) level ground, brakes set, lower gear first
D) no brakes
Question 11
What is trailer ABS light for?
A) shows trailer ABS fault
B) brake lights
C) decoration
D) turn signal
Question 12
How test ABS?
A) watch dash + trailer lamp at startup
B) no test
C) ask others
D) drive test
Question 13
What is landing gear position?
A) half down ok
B) dragging fine
C) down always
D) fully raised for travel
Question 14
How cross railroad with doubles?
A) race gates
B) stop on tracks
C) know clearance, never stop on tracks
D) shift on tracks
Question 15
What following distance for combos?
A) no rule
B) 6+ seconds at speed
C) 2 seconds
D) tailgate
Question 16
What are trailer brakes types?
A) service, emergency, parking
B) no trailer brakes
C) hand only
D) one type
Question 17
How check air lines on doubles?
A) no check
B) tug hard
C) visual only
D) connected, sealed, no leaks or tangles
Question 18
What is a tractor protection valve?
A) light switch
B) horn
C) fuel valve
D) keeps tractor air if trailer breaks away
Question 19
How test tractor protection?
A) ask others
B) pull trailer supply, check tractor brakes hold
C) no test
D) drive test
Question 20
What is bobtailing?
A) backing
B) parking
C) driving tractor without trailer
D) with doubles

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