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Mississippi CDL Combination Practice Questions - Mississippi CDL Combination Vehicles Test Exam
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Question
1
of 25
QUESTION 1 / 25
Which weight description fits a typical Class A combination vehicle?
Choose one answer below.
A
26,001 pounds or more with a towed unit over 10,000 pounds
✓
B
A passenger endorsement automatically covers it
✓
C
A Class B CDL always covers any trailer weight
✓
D
Only a hazardous materials endorsement is required
✓
QUESTION 2 / 25
For Mississippi CDL purposes, which combination usually requires Class A knowledge?
Choose one answer below.
A
A passenger endorsement automatically covers it
✓
B
A Class B CDL always covers any trailer weight
✓
C
Only a hazardous materials endorsement is required
✓
D
26,001 pounds or more with a towed unit over 10,000 pounds
✓
QUESTION 3 / 25
What Class A threshold should a Mississippi tractor-trailer applicant know?
Choose one answer below.
A
A Class B CDL always covers any trailer weight
✓
B
Only a hazardous materials endorsement is required
✓
C
26,001 pounds or more with a towed unit over 10,000 pounds
✓
D
A passenger endorsement automatically covers it
✓
QUESTION 4 / 25
Which answer best describes the federal Class A combination rule?
Choose one answer below.
A
Only a hazardous materials endorsement is required
✓
B
26,001 pounds or more with a towed unit over 10,000 pounds
✓
C
A passenger endorsement automatically covers it
✓
D
A Class B CDL always covers any trailer weight
✓
QUESTION 5 / 25
A Mississippi driver seeking tractor-trailer privileges should recognize Class A as:
Choose one answer below.
A
26,001 pounds or more with a towed unit over 10,000 pounds
✓
B
A passenger endorsement automatically covers it
✓
C
A Class B CDL always covers any trailer weight
✓
D
Only a hazardous materials endorsement is required
✓
QUESTION 6 / 25
What score is required to pass a CDL knowledge test?
Choose one answer below.
A
A passenger endorsement automatically covers it
✓
B
A Class B CDL always covers any trailer weight
✓
C
Only a hazardous materials endorsement is required
✓
D
At least 80 percent correct on each knowledge test
✓
QUESTION 7 / 25
Under 49 CFR Part 383, what is the CDL knowledge-test pass mark?
Choose one answer below.
A
A Class B CDL always covers any trailer weight
✓
B
Only a hazardous materials endorsement is required
✓
C
At least 80 percent correct on each knowledge test
✓
D
A passenger endorsement automatically covers it
✓
QUESTION 8 / 25
What minimum score applies to the combination knowledge test?
Choose one answer below.
A
Only a hazardous materials endorsement is required
✓
B
At least 80 percent correct on each knowledge test
✓
C
A passenger endorsement automatically covers it
✓
D
A Class B CDL always covers any trailer weight
✓
QUESTION 9 / 25
How many questions must a CDL applicant answer correctly to pass federally?
Choose one answer below.
A
At least 80 percent correct on each knowledge test
✓
B
A passenger endorsement automatically covers it
✓
C
A Class B CDL always covers any trailer weight
✓
D
Only a hazardous materials endorsement is required
✓
QUESTION 10 / 25
Which passing standard applies to Mississippi CDL knowledge tests?
Choose one answer below.
A
A passenger endorsement automatically covers it
✓
B
A Class B CDL always covers any trailer weight
✓
C
Only a hazardous materials endorsement is required
✓
D
At least 80 percent correct on each knowledge test
✓
QUESTION 11 / 25
What is off-tracking?
Choose one answer below.
A
The trailer tracks exactly over the tractor steer tires
✓
B
The kingpin unlocks during tight turns
✓
C
The trailer wheels follow a shorter inside path than the tractor
✓
D
The tractor wheels follow inside the trailer path
✓
QUESTION 12 / 25
Why does a trailer cut across curbs in tight turns?
Choose one answer below.
A
The kingpin unlocks during tight turns
✓
B
The trailer wheels follow a shorter inside path than the tractor
✓
C
The tractor wheels follow inside the trailer path
✓
D
The trailer tracks exactly over the tractor steer tires
✓
QUESTION 13 / 25
What happens to rear trailer wheels during a sharp turn?
Choose one answer below.
A
The trailer wheels follow a shorter inside path than the tractor
✓
B
The tractor wheels follow inside the trailer path
✓
C
The trailer tracks exactly over the tractor steer tires
✓
D
The kingpin unlocks during tight turns
✓
QUESTION 14 / 25
Why must a tractor-trailer driver allow extra turning room?
Choose one answer below.
A
The tractor wheels follow inside the trailer path
✓
B
The trailer tracks exactly over the tractor steer tires
✓
C
The kingpin unlocks during tight turns
✓
D
The trailer wheels follow a shorter inside path than the tractor
✓
QUESTION 15 / 25
Which statement explains trailer off-tracking?
Choose one answer below.
A
The trailer tracks exactly over the tractor steer tires
✓
B
The kingpin unlocks during tight turns
✓
C
The trailer wheels follow a shorter inside path than the tractor
✓
D
The tractor wheels follow inside the trailer path
✓
QUESTION 16 / 25
What is the best rollover-prevention habit on ramps?
Choose one answer below.
A
Apply only the trailer hand valve during the maneuver
✓
B
Slow before curves and steer smoothly
✓
C
Accelerate through the curve to keep the trailer upright
✓
D
Use sudden steering to bring the trailer back in line
✓
QUESTION 17 / 25
How should a loaded combination enter a curve?
Choose one answer below.
A
Slow before curves and steer smoothly
✓
B
Accelerate through the curve to keep the trailer upright
✓
C
Use sudden steering to bring the trailer back in line
✓
D
Apply only the trailer hand valve during the maneuver
✓
QUESTION 18 / 25
Which action helps prevent trailer rollover?
Choose one answer below.
A
Accelerate through the curve to keep the trailer upright
✓
B
Use sudden steering to bring the trailer back in line
✓
C
Apply only the trailer hand valve during the maneuver
✓
D
Slow before curves and steer smoothly
✓
QUESTION 19 / 25
What should you do before a sharp curve in a tractor-trailer?
Choose one answer below.
A
Use sudden steering to bring the trailer back in line
✓
B
Apply only the trailer hand valve during the maneuver
✓
C
Slow before curves and steer smoothly
✓
D
Accelerate through the curve to keep the trailer upright
✓
QUESTION 20 / 25
What speed practice is safest for a high-center-of-gravity combination?
Choose one answer below.
A
Apply only the trailer hand valve during the maneuver
✓
B
Slow before curves and steer smoothly
✓
C
Accelerate through the curve to keep the trailer upright
✓
D
Use sudden steering to bring the trailer back in line
✓
QUESTION 21 / 25
What is the first response to a trailer skid from locked wheels?
Choose one answer below.
A
Release the brakes so locked trailer wheels can roll
✓
B
Accelerate through the curve to keep the trailer upright
✓
C
Use sudden steering to bring the trailer back in line
✓
D
Apply only the trailer hand valve during the maneuver
✓
QUESTION 22 / 25
How do you recover when braking causes the trailer to swing?
Choose one answer below.
A
Accelerate through the curve to keep the trailer upright
✓
B
Use sudden steering to bring the trailer back in line
✓
C
Apply only the trailer hand valve during the maneuver
✓
D
Release the brakes so locked trailer wheels can roll
✓
QUESTION 23 / 25
What should you do if trailer wheels lock during a skid?
Choose one answer below.
A
Use sudden steering to bring the trailer back in line
✓
B
Apply only the trailer hand valve during the maneuver
✓
C
Release the brakes so locked trailer wheels can roll
✓
D
Accelerate through the curve to keep the trailer upright
✓
QUESTION 24 / 25
Which action helps a skidding trailer regain traction?
Choose one answer below.
A
Apply only the trailer hand valve during the maneuver
✓
B
Release the brakes so locked trailer wheels can roll
✓
C
Accelerate through the curve to keep the trailer upright
✓
D
Use sudden steering to bring the trailer back in line
✓
QUESTION 25 / 25
What should you avoid doing when a trailer skid starts?
Choose one answer below.
A
Release the brakes so locked trailer wheels can roll
✓
B
Accelerate through the curve to keep the trailer upright
✓
C
Use sudden steering to bring the trailer back in line
✓
D
Apply only the trailer hand valve during the maneuver
✓
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