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Missouri CDL Combination Practice Questions - Missouri CDL Combination Vehicles Test Exam
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Question
1
of 25
QUESTION 1 / 25
How many questions does Missouri list for the CDL Combination Vehicle written exam?
Choose one answer below.
A
20 questions
✓
B
10 questions
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C
25 questions
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D
50 questions
✓
QUESTION 2 / 25
What minimum score is required on Missouri CDL written exams?
Choose one answer below.
A
60%
✓
B
80%
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C
70%
✓
D
90%
✓
QUESTION 3 / 25
A failed combination-vehicle knowledge test prevents issuance of what federal credential?
Choose one answer below.
A
Passenger endorsement only
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B
Motorcycle permit
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C
Group A CLP or CDL
✓
D
School bus-only permit
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QUESTION 4 / 25
A Class A combination generally has GCWR of 26,001 pounds or more when the towed unit is over what GVWR?
Choose one answer below.
A
5,000 pounds
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B
8,000 pounds
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C
26,001 pounds
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D
10,000 pounds
✓
QUESTION 5 / 25
How long must a Missouri CLP be held before CDL skills testing?
Choose one answer below.
A
At least 14 days
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B
At least 7 days
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C
At least 30 days
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D
No minimum period
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QUESTION 6 / 25
Who administers Missouri CDL written examinations?
Choose one answer below.
A
Private trucking schools only
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B
Missouri State Highway Patrol testing locations
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C
County collectors only
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D
FMCSA regional offices
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QUESTION 7 / 25
What CDL Written Test Fee is listed in Missouri CDL Manual Section 14?
Choose one answer below.
A
$$5.00
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B
$$10.00
✓
C
$$25.00
✓
D
$$40.00
✓
QUESTION 8 / 25
What Missouri CLP fee is listed for 6 months or 180 days or less?
Choose one answer below.
A
$$25.00
✓
B
$$40.00
✓
C
$$50.00
✓
D
$$5.00
✓
QUESTION 9 / 25
Which Missouri manual section is the main study source for Combination Vehicles?
Choose one answer below.
A
Section 6
✓
B
Section 3 only
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C
Section 9 only
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D
Section 14 only
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QUESTION 10 / 25
Which statement about Missouri commercial license examinations is listed in the manual?
Choose one answer below.
A
Interpreters are always allowed
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B
They are administered only in English
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C
They are administered by FMCSA at weigh stations
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D
Class A applicants skip written tests
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QUESTION 11 / 25
Why do combination vehicles need more driver skill than single vehicles?
Choose one answer below.
A
They never use mirrors
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B
They are always automatic
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C
They are usually heavier and longer
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D
They are exempt from traffic laws
✓
QUESTION 12 / 25
What two habits help prevent rollovers in combination vehicles?
Choose one answer below.
A
Load cargo high and steer sharply
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B
Use only the trailer hand valve in curves
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C
Accelerate on ramps
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D
Keep cargo low and drive slowly around turns
✓
QUESTION 13 / 25
Why is high cargo dangerous in a trailer?
Choose one answer below.
A
It raises the center of gravity
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B
It lowers the center of gravity
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C
It prevents off-tracking
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D
It improves brake balance
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QUESTION 14 / 25
Fully loaded rigs are about how much more likely to roll over in a crash than empty rigs?
Choose one answer below.
A
Two times
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B
Ten times
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C
Five times
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D
Twenty times
✓
QUESTION 15 / 25
What is rearward amplification?
Choose one answer below.
A
An emergency-line air-pressure increase
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B
Engine rpm rise while backing
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C
The crack-the-whip effect that amplifies trailer movement toward the rear
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D
Landing gear lift
✓
QUESTION 16 / 25
What steering habit reduces combination rollover and jackknife risk?
Choose one answer below.
A
Make sudden corrections
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B
Use the hand valve while steering
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C
Check mirrors only after turning
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D
Steer gently and smoothly
✓
QUESTION 17 / 25
Why are quick lane changes hazardous for combinations?
Choose one answer below.
A
They can create crack-the-whip amplification and roll a trailer
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B
They always disconnect glad hands
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C
They invalidate the CLP
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D
They improve cargo distribution
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QUESTION 18 / 25
Why center and spread cargo in the trailer?
Choose one answer below.
A
It removes all off-tracking
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B
Off-center loads can lean the trailer and increase rollover risk
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C
It removes CDL requirements
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D
It prevents crossed lines
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QUESTION 19 / 25
What should you do before a curve in a loaded combination vehicle?
Choose one answer below.
A
Brake sharply midway through the curve
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B
Use only the trailer hand valve
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C
Slow to a safe speed before entering the curve
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D
Accelerate to keep the trailer straight
✓
QUESTION 20 / 25
What is a key reason empty or lightly loaded trailers can still be hazardous?
Choose one answer below.
A
They cannot roll over
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B
They need no brake check
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C
They eliminate rearward amplification
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D
They can lock wheels and skid more easily under braking
✓
QUESTION 21 / 25
At speeds under 40 mph, what following-distance rule applies to combinations?
Choose one answer below.
A
At least 1 second for each 10 feet of vehicle length
✓
B
Exactly 2 seconds for all vehicles
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C
One car length for every 10 mph
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D
Half a second for every axle
✓
QUESTION 22 / 25
A 60-foot combination over 40 mph should allow at least how many seconds under Missouri's rule?
Choose one answer below.
A
4 seconds
✓
B
7 seconds
✓
C
6 seconds
✓
D
10 seconds
✓
QUESTION 23 / 25
Why should a combination driver look far ahead?
Choose one answer below.
A
To skip inspections
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B
To release trailer brakes faster
✓
C
To avoid surprise maneuvers and panic stops
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D
To avoid turn signals
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QUESTION 24 / 25
What is off-tracking?
Choose one answer below.
A
Trailer brakes release late
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B
The fifth wheel slides unlocked
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C
Cargo shifts forward
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D
Rear wheels follow a tighter path than front wheels in a turn
✓
QUESTION 25 / 25
What increases off-tracking?
Choose one answer below.
A
Longer vehicle length
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B
Working ABS
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C
A full fuel tank
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D
Lower dashboard air pressure
✓
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