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Virginia CDL Doubles and Triples Endorsement Test Practice Questions - Virginia CDL Doubles and Triples Endorsement Test Exam
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Question
1
of 25
QUESTION 1 / 25
In Virginia, which CDL endorsement permits operation of a vehicle towing a double or triple trailer?
Choose one answer below.
A
H endorsement
✓
B
N endorsement
✓
C
T endorsement
✓
D
X endorsement
✓
QUESTION 2 / 25
What Virginia Commercial Driver's Manual section does Virginia DMV list for the Double-Triple Trailer endorsement test?
Choose one answer below.
A
Section 4-1: Transporting Passengers Safely
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B
Section 5-1: Air Brakes
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C
Section 7-1: Doubles and Triples
✓
D
Section 9-1: Hazardous Materials
✓
QUESTION 3 / 25
Under FMCSA CDL endorsement information, what test type is required for the T endorsement?
Choose one answer below.
A
Knowledge test only
✓
B
Skills test only
✓
C
Road test only with triples
✓
D
Hazmat background check only
✓
QUESTION 4 / 25
What minimum score must a Virginia applicant achieve on CDL knowledge exams?
Choose one answer below.
A
60%
✓
B
70%
✓
C
75%
✓
D
80%
✓
QUESTION 5 / 25
How are Virginia CDL knowledge exams administered according to Virginia DMV?
Choose one answer below.
A
Only on paper
✓
B
Only orally for all endorsements
✓
C
On a computer
✓
D
Only through a home web browser
✓
QUESTION 6 / 25
How often may a Virginia applicant take CDL knowledge exams?
Choose one answer below.
A
Only once per business day
✓
B
Unlimited times the same day
✓
C
Only once per month
✓
D
Only after a 14-day wait for each retest
✓
QUESTION 7 / 25
Which endorsement is allowed on a Virginia CLP under Virginia DMV's CLP endorsement table?
Choose one answer below.
A
T for doubles/triples
✓
B
H for hazardous materials
✓
C
N for tank vehicles with restrictions
✓
D
X for tank and hazardous materials
✓
QUESTION 8 / 25
What does 49 CFR 383.93 require before a state issues a CDL endorsement?
Choose one answer below.
A
The driver must successfully complete the required specialized test
✓
B
The driver must own the vehicle type
✓
C
The driver must pass a separate medical exam for every endorsement
✓
D
The driver must retake the entire skills test for every endorsement
✓
QUESTION 9 / 25
What is a converter dolly used for in doubles/triples operations?
Choose one answer below.
A
To connect a semi-trailer behind another trailer
✓
B
To replace the tractor fifth wheel
✓
C
To carry only spare tires
✓
D
To disable trailer brakes during coupling
✓
QUESTION 10 / 25
What component connects a converter dolly's drawbar eye to the trailer or towing unit ahead?
Choose one answer below.
A
Pintle hook
✓
B
Landing gear crank
✓
C
Slack adjuster
✓
D
ABS warning lamp
✓
QUESTION 11 / 25
Before coupling a converter dolly, why should the drawbar and pintle hook be inspected?
Choose one answer below.
A
To confirm paint color matches the tractor
✓
B
To make sure the mechanical connection is not cracked, bent, worn, or unlocked
✓
C
To estimate fuel mileage
✓
D
To decide whether the cargo doors should be open
✓
QUESTION 12 / 25
What should be done with converter dolly support legs after the dolly is coupled?
Choose one answer below.
A
Raise and secure them
✓
B
Leave them dragging to stabilize the dolly
✓
C
Remove them and place them in the cab
✓
D
Lower them halfway for braking
✓
QUESTION 13 / 25
Which trailer should generally be the heaviest in a set of doubles?
Choose one answer below.
A
The rear trailer
✓
B
The front trailer
✓
C
Either trailer because weight placement never matters
✓
D
The converter dolly instead of either trailer
✓
QUESTION 14 / 25
When backing under a trailer for coupling, how should the trailer height generally compare with the fifth wheel?
Choose one answer below.
A
Slightly lower than the fifth wheel
✓
B
Far above the fifth wheel
✓
C
So low the tractor frame strikes the trailer
✓
D
Height does not matter
✓
QUESTION 15 / 25
What is a tug test used to confirm after coupling?
Choose one answer below.
A
That the trailer is securely coupled
✓
B
That the cargo paperwork is complete
✓
C
That the fuel tanks are full
✓
D
That the route has no hills
✓
QUESTION 16 / 25
What should be visually checked at a fifth wheel after coupling?
Choose one answer below.
A
That the jaws are closed around the kingpin and the release handle is locked
✓
B
Only that the fifth wheel is painted black
✓
C
Only that the landing gear is shiny
✓
D
That the trailer registration is current
✓
QUESTION 17 / 25
During uncoupling, why should a trailer be parked on firm, level ground when possible?
Choose one answer below.
A
To prevent rolling or sinking while it is being separated
✓
B
To make the trailer harder to inspect
✓
C
To remove the need for parking brakes
✓
D
To let air lines disconnect themselves
✓
QUESTION 18 / 25
Before pulling away from an uncoupled trailer, what must support the trailer front?
Choose one answer below.
A
Properly lowered landing gear
✓
B
The service air line
✓
C
The tractor mirrors
✓
D
The rear trailer brake lights
✓
QUESTION 19 / 25
What should be done with disconnected glad hands and electrical connectors?
Choose one answer below.
A
Secure them so they stay clean and undamaged
✓
B
Leave them dragging on the ground
✓
C
Pack them with dirt to seal leaks
✓
D
Tie them to the steering wheel
✓
QUESTION 20 / 25
What does a glad hand connect?
Choose one answer below.
A
Air brake lines
✓
B
Fuel filler necks
✓
C
Fifth-wheel jaws
✓
D
Cargo straps
✓
QUESTION 21 / 25
What must be checked after connecting electrical cords on doubles or triples?
Choose one answer below.
A
That required lights operate on all trailers
✓
B
That the horn changes pitch
✓
C
That the fuel gauge resets
✓
D
That the fifth wheel releases
✓
QUESTION 22 / 25
Where should rear shut-off valves usually be closed in a set of doubles?
Choose one answer below.
A
At the rear of the last trailer
✓
B
At the rear of every trailer including the lead trailer
✓
C
Only at the tractor dashboard
✓
D
Nowhere; all shut-off valves must stay open
✓
QUESTION 23 / 25
Why must air and electrical lines have enough slack between units?
Choose one answer below.
A
So they can move during turns without stretching or breaking
✓
B
So they drag on the pavement
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C
So they disconnect during sharp turns
✓
D
So the driver can skip mirror checks
✓
QUESTION 24 / 25
What driving behavior best reduces rollover risk in doubles/triples?
Choose one answer below.
A
Slow before curves and steer smoothly
✓
B
Enter curves fast and brake hard halfway through
✓
C
Make quick lane changes to keep trailers straight
✓
D
Rely on the rear trailer to stabilize the set
✓
QUESTION 25 / 25
What is rearward amplification in doubles/triples?
Choose one answer below.
A
A steering movement grows larger toward the rear trailer
✓
B
Brake pressure automatically increases toward the rear
✓
C
Cargo weight moves forward under acceleration
✓
D
The tractor engine becomes louder behind the cab
✓
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