E
.
Learndmv
DMV PRACTICE
Toggle navigation
Find your state
Exam types
Practice tests
Sign in
Create account
↗
This quiz has no questions yet.
← Leave quiz
Missouri CDL Combination Practice Questions - Missouri CDL Combination Vehicles Test Exam
Practice mode
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
✓
C
25 questions
✓
D
50 questions
✓
QUESTION 2 / 25
What minimum score is required on Missouri CDL written exams?
Choose one answer below.
A
60%
✓
B
80%
✓
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
✓
B
Motorcycle permit
✓
C
Group A CLP or CDL
✓
D
School bus-only permit
✓
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
✓
B
8,000 pounds
✓
C
26,001 pounds
✓
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
✓
B
At least 7 days
✓
C
At least 30 days
✓
D
No minimum period
✓
QUESTION 6 / 25
Who administers Missouri CDL written examinations?
Choose one answer below.
A
Private trucking schools only
✓
B
Missouri State Highway Patrol testing locations
✓
C
County collectors only
✓
D
FMCSA regional offices
✓
QUESTION 7 / 25
What CDL Written Test Fee is listed in Missouri CDL Manual Section 14?
Choose one answer below.
A
$$5.00
✓
B
$$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
✓
C
Section 9 only
✓
D
Section 14 only
✓
QUESTION 10 / 25
Which statement about Missouri commercial license examinations is listed in the manual?
Choose one answer below.
A
Interpreters are always allowed
✓
B
They are administered only in English
✓
C
They are administered by FMCSA at weigh stations
✓
D
Class A applicants skip written tests
✓
QUESTION 11 / 25
Why do combination vehicles need more driver skill than single vehicles?
Choose one answer below.
A
They never use mirrors
✓
B
They are always automatic
✓
C
They are usually heavier and longer
✓
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
✓
B
Use only the trailer hand valve in curves
✓
C
Accelerate on ramps
✓
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
✓
B
It lowers the center of gravity
✓
C
It prevents off-tracking
✓
D
It improves brake balance
✓
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
✓
B
Ten times
✓
C
Five times
✓
D
Twenty times
✓
QUESTION 15 / 25
What is rearward amplification?
Choose one answer below.
A
An emergency-line air-pressure increase
✓
B
Engine rpm rise while backing
✓
C
The crack-the-whip effect that amplifies trailer movement toward the rear
✓
D
Landing gear lift
✓
QUESTION 16 / 25
What steering habit reduces combination rollover and jackknife risk?
Choose one answer below.
A
Make sudden corrections
✓
B
Use the hand valve while steering
✓
C
Check mirrors only after turning
✓
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
✓
B
They always disconnect glad hands
✓
C
They invalidate the CLP
✓
D
They improve cargo distribution
✓
QUESTION 18 / 25
Why center and spread cargo in the trailer?
Choose one answer below.
A
It removes all off-tracking
✓
B
Off-center loads can lean the trailer and increase rollover risk
✓
C
It removes CDL requirements
✓
D
It prevents crossed lines
✓
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
✓
B
Use only the trailer hand valve
✓
C
Slow to a safe speed before entering the curve
✓
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
✓
B
They need no brake check
✓
C
They eliminate rearward amplification
✓
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
✓
C
One car length for every 10 mph
✓
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
✓
B
To release trailer brakes faster
✓
C
To avoid surprise maneuvers and panic stops
✓
D
To avoid turn signals
✓
QUESTION 24 / 25
What is off-tracking?
Choose one answer below.
A
Trailer brakes release late
✓
B
The fifth wheel slides unlocked
✓
C
Cargo shifts forward
✓
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
✓
B
Working ABS
✓
C
A full fuel tank
✓
D
Lower dashboard air pressure
✓
← Previous
0 of 25 answered
Next question →
Finish & see results →