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TX CDL Doubles and Triples Practice Questions - Texas CDL Doubles and Triples Endorsement Test Exam
Practice mode
Question
1
of 25
QUESTION 1 / 25
What Texas CDL endorsement covers double and triple trailer combinations where lawful?
Choose one answer below.
A
T endorsement
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
QUESTION 2 / 25
Which federal rule lists required doubles/triples knowledge areas?
Choose one answer below.
A
A passenger endorsement only
✓
B
A cargo paperwork shortcut
✓
C
An action not supported by DPS Section 7
✓
D
49 CFR 383.115
✓
QUESTION 3 / 25
What minimum score is required on CDL knowledge tests?
Choose one answer below.
A
A cargo paperwork shortcut
✓
B
An action not supported by DPS Section 7
✓
C
80 percent correct
✓
D
A passenger endorsement only
✓
QUESTION 4 / 25
Which endorsement is allowed on a CLP under federal rules?
Choose one answer below.
A
An action not supported by DPS Section 7
✓
B
Tank vehicle endorsement
✓
C
A passenger endorsement only
✓
D
A cargo paperwork shortcut
✓
QUESTION 5 / 25
How long does Texas DPS say a Texas CLP is valid?
Choose one answer below.
A
180 days or until the base Texas driver license expires, whichever is earliest
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
QUESTION 6 / 25
What fee does Texas DPS list for an original Commercial Learners Permit?
Choose one answer below.
A
A passenger endorsement only
✓
B
A cargo paperwork shortcut
✓
C
An action not supported by DPS Section 7
✓
D
$$25
✓
QUESTION 7 / 25
Which statement about ELDT and adding only T is most accurate?
Choose one answer below.
A
A cargo paperwork shortcut
✓
B
An action not supported by DPS Section 7
✓
C
FMCSA/Texas DPS do not list T alone as a separate ELDT trigger
✓
D
A passenger endorsement only
✓
QUESTION 8 / 25
Which official Texas handbook section covers doubles and triples?
Choose one answer below.
A
An action not supported by DPS Section 7
✓
B
Texas Commercial Motor Vehicle Drivers Handbook Section 7
✓
C
A passenger endorsement only
✓
D
A cargo paperwork shortcut
✓
QUESTION 9 / 25
What is converter gear on a dolly?
Choose one answer below.
A
A coupling device with one or two axles and a fifth wheel
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
QUESTION 10 / 25
Where should the heavier semitrailer be placed for safest double-trailer handling?
Choose one answer below.
A
A passenger endorsement only
✓
B
A cargo paperwork shortcut
✓
C
An action not supported by DPS Section 7
✓
D
First position behind the tractor
✓
QUESTION 11 / 25
What should be done if the rear trailer lacks spring brakes before coupling?
Choose one answer below.
A
A cargo paperwork shortcut
✓
B
An action not supported by DPS Section 7
✓
C
Charge the air tank, set emergency brakes, and chock if in doubt
✓
D
A passenger endorsement only
✓
QUESTION 12 / 25
What must be checked at the pintle hook connection?
Choose one answer below.
A
An action not supported by DPS Section 7
✓
B
It is latched, locked, and not damaged
✓
C
A passenger endorsement only
✓
D
A cargo paperwork shortcut
✓
QUESTION 13 / 25
Why are converter dolly safety chains inspected?
Choose one answer below.
A
They provide backup connection security
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
QUESTION 14 / 25
What should be done with the converter dolly support before travel?
Choose one answer below.
A
A passenger endorsement only
✓
B
A cargo paperwork shortcut
✓
C
An action not supported by DPS Section 7
✓
D
Raise and secure it
✓
QUESTION 15 / 25
What should align when positioning a converter dolly for the rear trailer?
Choose one answer below.
A
A cargo paperwork shortcut
✓
B
An action not supported by DPS Section 7
✓
C
The dolly fifth wheel and the rear trailer kingpin
✓
D
A passenger endorsement only
✓
QUESTION 16 / 25
What should the converter dolly air tank drain valve be during operation?
Choose one answer below.
A
An action not supported by DPS Section 7
✓
B
Closed
✓
C
A passenger endorsement only
✓
D
A cargo paperwork shortcut
✓
QUESTION 17 / 25
Where may the ABS warning lamp be located on an ABS-equipped converter dolly?
Choose one answer below.
A
On the left side of the dolly
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
QUESTION 18 / 25
What should be inspected at the dolly pintle-eye?
Choose one answer below.
A
A passenger endorsement only
✓
B
A cargo paperwork shortcut
✓
C
An action not supported by DPS Section 7
✓
D
Cracks, wear, and secure connection condition
✓
QUESTION 19 / 25
What is the first broad step in coupling twin trailers?
Choose one answer below.
A
A cargo paperwork shortcut
✓
B
An action not supported by DPS Section 7
✓
C
Secure the second rear trailer
✓
D
A passenger endorsement only
✓
QUESTION 20 / 25
What should align when positioning a converter dolly for the rear trailer?
Choose one answer below.
A
An action not supported by DPS Section 7
✓
B
The dolly fifth wheel and the rear trailer kingpin
✓
C
A passenger endorsement only
✓
D
A cargo paperwork shortcut
✓
QUESTION 21 / 25
What trailer height is desired for fifth-wheel coupling?
Choose one answer below.
A
Slightly low so the fifth wheel lifts the trailer
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
QUESTION 22 / 25
How should a fifth-wheel coupling be confirmed?
Choose one answer below.
A
A passenger endorsement only
✓
B
A cargo paperwork shortcut
✓
C
An action not supported by DPS Section 7
✓
D
Use a tug test and visually verify jaws around the kingpin
✓
QUESTION 23 / 25
When should landing gear be raised after coupling?
Choose one answer below.
A
A cargo paperwork shortcut
✓
B
An action not supported by DPS Section 7
✓
C
After the coupling is verified secure
✓
D
A passenger endorsement only
✓
QUESTION 24 / 25
What must be confirmed after coupling the rear trailer?
Choose one answer below.
A
An action not supported by DPS Section 7
✓
B
Air reaches the rear trailer brakes
✓
C
A passenger endorsement only
✓
D
A cargo paperwork shortcut
✓
QUESTION 25 / 25
How are shut-off valves normally set in a double combination?
Choose one answer below.
A
Intermediate valves open and valves at the rear of the last trailer closed
✓
B
A passenger endorsement only
✓
C
A cargo paperwork shortcut
✓
D
An action not supported by DPS Section 7
✓
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