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Massachusetts CDL Combination Practice Questions - Massachusetts CDL Combination Vehicles Test Exam
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Question
1
of 25
QUESTION 1 / 25
Which Massachusetts CLP knowledge test is required for Class A combination vehicle privileges?
Choose one answer below.
A
Combination Vehicles
✓
B
School Bus only
✓
C
Tank Vehicles only
✓
D
Passenger Transport only
✓
QUESTION 2 / 25
How many questions are on the Massachusetts Combination Vehicles knowledge exam?
Choose one answer below.
A
50 questions
✓
B
20 questions
✓
C
25 questions
✓
D
30 questions
✓
QUESTION 3 / 25
How many correct answers are needed to pass the Massachusetts Combination Vehicles exam?
Choose one answer below.
A
10 correct answers
✓
B
12 correct answers
✓
C
16 correct answers
✓
D
20 correct answers
✓
QUESTION 4 / 25
What is the time allowed for the Massachusetts Combination Vehicles knowledge exam?
Choose one answer below.
A
60 minutes
✓
B
25 minutes
✓
C
No time limit is published
✓
D
20 minutes
✓
QUESTION 5 / 25
Under Group A/Class A rules, the towed vehicle must have a GVWR over what amount?
Choose one answer below.
A
10,000 pounds
✓
B
5,000 pounds
✓
C
8,000 pounds
✓
D
26,001 pounds
✓
QUESTION 6 / 25
What does GCWR stand for?
Choose one answer below.
A
Gross Cargo Weight Report
✓
B
Gross Combination Weight Rating
✓
C
General Commercial Weight Rule
✓
D
Gross Coupling Wheel Rating
✓
QUESTION 7 / 25
What does GVWR stand for?
Choose one answer below.
A
General Vehicle Width Rating
✓
B
Gross Verified Weight Record
✓
C
Gross Vehicle Weight Rating
✓
D
Gear Vehicle Weight Rule
✓
QUESTION 8 / 25
What is a combination vehicle?
Choose one answer below.
A
A straight truck with no trailer
✓
B
Any vehicle with a manual transmission
✓
C
A passenger vehicle with a roof rack
✓
D
A truck or tractor pulling one or more trailers
✓
QUESTION 9 / 25
What is the kingpin on a semitrailer?
Choose one answer below.
A
The vertical pin that locks into the fifth wheel jaws
✓
B
The landing gear crank handle
✓
C
The red trailer air supply knob
✓
D
The rear trailer axle
✓
QUESTION 10 / 25
What is the fifth wheel used for?
Choose one answer below.
A
Inflating trailer tires
✓
B
Coupling the tractor to the trailer kingpin
✓
C
Operating trailer marker lights
✓
D
Measuring cargo weight
✓
QUESTION 11 / 25
Before backing under a trailer, the fifth wheel locking jaws should be:
Choose one answer below.
A
Closed and locked
✓
B
Removed from the tractor
✓
C
Open
✓
D
Covered with a glad hand seal
✓
QUESTION 12 / 25
A visible gap between the trailer apron and fifth wheel after coupling usually means:
Choose one answer below.
A
The trailer is ready to drive
✓
B
The landing gear is fully raised
✓
C
The air lines are crossed correctly
✓
D
The coupling may be unsafe and must be corrected
✓
QUESTION 13 / 25
What is the purpose of a tug test after coupling?
Choose one answer below.
A
To confirm the kingpin is locked in the fifth wheel
✓
B
To test the horn
✓
C
To measure tire tread depth
✓
D
To warm the brakes
✓
QUESTION 14 / 25
After a tug test, why should you still visually inspect the fifth wheel?
Choose one answer below.
A
Massachusetts bans tug tests
✓
B
A tug test alone may not reveal an unsafe lock
✓
C
The visual check replaces all brake tests
✓
D
The jaws control the trailer lights
✓
QUESTION 15 / 25
What color is commonly used for the trailer emergency or supply air line?
Choose one answer below.
A
Blue
✓
B
Green
✓
C
Red
✓
D
Yellow
✓
QUESTION 16 / 25
What color is commonly used for the trailer service air line?
Choose one answer below.
A
Red
✓
B
White
✓
C
Orange
✓
D
Blue
✓
QUESTION 17 / 25
What should be done with glad hands when air lines are not connected?
Choose one answer below.
A
Secure them to dummy couplers or storage points
✓
B
Leave them dragging
✓
C
Tie them to the landing gear foot
✓
D
Put them under a tire
✓
QUESTION 18 / 25
What is off-tracking?
Choose one answer below.
A
The trailer brakes release on a downgrade
✓
B
The trailer rear wheels follow a shorter path than the tractor in a turn
✓
C
The fifth wheel slides forward by itself
✓
D
The tractor crosses tracks too slowly
✓
QUESTION 19 / 25
When turning right with a tractor-trailer, why should you allow extra room?
Choose one answer below.
A
The trailer wheels always track wider than the tractor
✓
B
The trailer brakes cannot work in a turn
✓
C
The trailer wheels cut inside the tractor path
✓
D
The steering axle moves backward
✓
QUESTION 20 / 25
What is a jackknife?
Choose one answer below.
A
A fifth wheel grease tool
✓
B
A legal Class A endorsement
✓
C
A trailer light failure
✓
D
The tractor and trailer fold toward each other at the coupling
✓
QUESTION 21 / 25
On slippery roads in a combination vehicle, the safest general response is to:
Choose one answer below.
A
Reduce speed and increase following distance
✓
B
Maintain speed and use only the trailer hand valve
✓
C
Brake harder to keep the trailer straight
✓
D
Turn off all trailer lights
✓
QUESTION 22 / 25
Why do combination vehicles need more following distance than passenger cars?
Choose one answer below.
A
They have shorter mirrors
✓
B
They are heavier and take longer to stop
✓
C
They are always limited to city speeds
✓
D
They do not have service brakes
✓
QUESTION 23 / 25
What should be fully raised and secured before driving away after coupling?
Choose one answer below.
A
The fifth wheel release handle
✓
B
The trailer doors on every empty trailer
✓
C
Landing gear
✓
D
The tractor hood
✓
QUESTION 24 / 25
What should you inspect on the trailer electrical cord before driving?
Choose one answer below.
A
It is wrapped around the fifth wheel release handle
✓
B
It is disconnected to save battery power
✓
C
It is touching the exhaust for warmth
✓
D
It is connected, supported, and not dragging or pinched
✓
QUESTION 25 / 25
Which control applies only the trailer service brakes and is mainly for testing?
Choose one answer below.
A
Trailer hand valve
✓
B
Clutch pedal
✓
C
Fifth wheel release lever
✓
D
Landing gear crank
✓
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