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Texas CDL Tanker Endorsement Test Practice Questions - Texas CDL Tanker Vehicles Endorsement Test Exam
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Question
1
of 25
QUESTION 1 / 25
What does the N endorsement authorize on a Texas CDL or CLP?
Choose one answer below.
A
Operation of a tank vehicle
✓
B
Transportation of passengers only
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C
Towing doubles and triples only
✓
D
Operation of a school bus only
✓
QUESTION 2 / 25
Under the Texas Commercial Motor Vehicle Drivers Handbook, does tank cargo have to be hazardous for the tank endorsement requirement to apply?
Choose one answer below.
A
Yes, only hazardous liquid cargo counts
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B
Yes, but only gasoline counts
✓
C
No, qualifying liquid or gas tanks can require the endorsement even when the cargo is not hazardous
✓
D
No endorsement is ever needed for nonhazardous cargo
✓
QUESTION 3 / 25
Which tank threshold language is used in the Texas handbook for many Class A or B tank vehicle situations?
Choose one answer below.
A
Only tanks permanently welded to the tractor
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B
Any container over 55 gallons with no aggregate threshold
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C
Only tanks over 5,000 gallons
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D
More than 119 gallons individual capacity and 1,000 gallons aggregate capacity
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QUESTION 4 / 25
What is liquid surge?
Choose one answer below.
A
A tire-pressure warning
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B
The movement of liquid cargo inside a tank
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C
A diesel exhaust treatment cycle
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D
A required Texas road sign
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QUESTION 5 / 25
When is liquid surge usually most noticeable?
Choose one answer below.
A
Only when parked overnight
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B
With an empty tank containing no liquid
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C
With a partially filled tank
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D
Only when the tank is filled with solid freight
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QUESTION 6 / 25
Why should a Texas tanker driver leave extra following distance?
Choose one answer below.
A
Tank vehicles always stop shorter than vans
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B
Texas waives brake requirements for tank vehicles
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C
Surge can increase stopping distance and push the vehicle after braking
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D
Following distance only matters for passenger buses
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QUESTION 7 / 25
What should a tanker driver do before entering a curve or ramp?
Choose one answer below.
A
Slow to a safe speed before the curve
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B
Brake hard in the middle of the curve
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C
Accelerate through the curve to settle the liquid
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D
Shift to neutral and coast
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QUESTION 8 / 25
What is outage, also called ullage?
Choose one answer below.
A
The maximum legal tire tread depth
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B
Empty space left in a tank for liquid expansion
✓
C
The CDL skills-test backing area
✓
D
A Texas road-closure notice
✓
QUESTION 9 / 25
Why are tanks not loaded completely full with many liquids?
Choose one answer below.
A
Liquids expand when warmed and need outage space
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B
A full tank is always illegal regardless of product
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C
Outage eliminates all surge
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D
Texas requires every tank to be half empty
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QUESTION 10 / 25
What do baffles do inside a tank?
Choose one answer below.
A
Eliminate the need for inspection
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B
Make the tank a dry van
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C
Slow front-to-back liquid movement
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D
Turn hazardous cargo into nonhazardous cargo
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QUESTION 11 / 25
What is a smooth-bore tank?
Choose one answer below.
A
An unbaffled tank with no internal structures to slow surge
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B
A tank with extra solid compartments only
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C
A tank used only for dry freight
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D
A tank that cannot carry food products
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QUESTION 12 / 25
How are bulkheads different from baffles?
Choose one answer below.
A
Bulkheads divide the tank into separate compartments; baffles have openings that slow flow
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B
Bulkheads are mirrors and baffles are tires
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C
Bulkheads eliminate the CDL requirement
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D
Baffles are only paperwork terms
✓
QUESTION 13 / 25
Why are tank vehicles prone to roll over?
Choose one answer below.
A
They are lighter than passenger cars
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B
They have no brakes under federal rules
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C
They often have a high center of gravity and moving liquid cargo
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D
They are never affected by curves
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QUESTION 14 / 25
Which driving input is safest for tank vehicles?
Choose one answer below.
A
Frequent brake pumping on every stop
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B
Rapid throttle and hard braking
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C
Sharp lane changes to settle the load
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D
Smooth acceleration, braking, and steering
✓
QUESTION 15 / 25
Before loading, unloading, or driving a tanker, what does the Texas handbook tell drivers to do?
Choose one answer below.
A
Disable the emergency systems
✓
B
Inspect the vehicle
✓
C
Ignore valves until after departure
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D
Remove all tank markings
✓
QUESTION 16 / 25
Which item is tank-specific during inspection?
Choose one answer below.
A
Only the sleeper mattress
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B
Only the radio presets
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C
Valves, manhole covers, vents, and piping
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D
Only the license plate frame
✓
QUESTION 17 / 25
What should you do if you find a leaking tank valve before departure?
Choose one answer below.
A
Do not move the vehicle until the leak is handled under company and safety procedures
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B
Drive faster so the load is delivered sooner
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C
Cover the leak with tape and ignore it
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D
Open another valve to balance pressure
✓
QUESTION 18 / 25
What does 49 CFR 383.119 require tanker applicants to know about cargo surge?
Choose one answer below.
A
Causes, prevention, and effects of cargo surge on handling
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B
Only fuel tax calculations
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C
Only passenger evacuation rules
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D
Only school-zone speed limits
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QUESTION 19 / 25
What is the federal minimum passing score for CDL knowledge tests under 49 CFR 383.135?
Choose one answer below.
A
80 percent
✓
B
50 percent
✓
C
65 percent
✓
D
100 percent only
✓
QUESTION 20 / 25
Which endorsement combination is generally reflected by X?
Choose one answer below.
A
Air brakes plus doubles only
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B
Passenger plus school bus only
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C
Hazardous materials plus tank vehicles
✓
D
Motorcycle plus tank vehicles
✓
QUESTION 21 / 25
Does FMCSA ELDT list the Tank Vehicles N endorsement alone as a first-time endorsement requiring ELDT?
Choose one answer below.
A
No CDL training rules exist for any applicant
✓
B
Yes, every N endorsement applicant must complete tanker ELDT theory
✓
C
Yes, but only in Texas
✓
D
No, ELDT endorsement rules focus on hazmat, passenger, and school bus endorsements
✓
QUESTION 22 / 25
What should be checked on hoses used in loading or unloading?
Choose one answer below.
A
Paint color only
✓
B
Condition, connections, leaks, and proper control before flow begins
✓
C
Whether they fit in the cab
✓
D
Only the outside temperature
✓
QUESTION 23 / 25
What should a driver verify about the product before loading?
Choose one answer below.
A
That paperwork is optional
✓
B
That the product label matches the radio station
✓
C
That every compartment is filled equally regardless of plan
✓
D
That the right product is going into the right compartment or tank
✓
QUESTION 24 / 25
Why can dense liquids create weight problems before a tank is physically full?
Choose one answer below.
A
Texas allows unlimited liquid weight
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B
Dense liquids weigh less than air
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C
Dense liquids eliminate axle limits
✓
D
A dense product can reach legal weight limits before volume capacity is reached
✓
QUESTION 25 / 25
What is the safest basic response to a curve warning sign in a tanker?
Choose one answer below.
A
Treat it as a warning to slow more than a passenger car might
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B
Assume the posted advisory is always safe for a loaded tanker
✓
C
Speed up to reduce side surge
✓
D
Brake only after reaching the curve apex
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