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CDL Tanker Practice Questions - CDL Tanker Endorsement (N) Exam
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Question
1
of 25
QUESTION 1 / 25
What is the primary danger of liquid surge in a tank vehicle?
Choose one answer below.
A
It increases fuel consumption
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B
It can push the truck forward when stopping or sideways in turns
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C
It causes the liquid to freeze
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D
It makes the tank easier to clean
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QUESTION 2 / 25
When is liquid surge most pronounced in a tank vehicle?
Choose one answer below.
A
When the tank is completely full
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B
When the tank is partially filled
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C
When the tank is empty
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D
When driving uphill only
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QUESTION 3 / 25
A tanker driver applies the brakes firmly to stop at a traffic light. After the vehicle stops, the liquid surge causes the truck to move forward again. What should the driver do?
Choose one answer below.
A
Immediately release the brakes
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B
Keep steady brake pressure until the surge subsides
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C
Apply the parking brake only
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D
Accelerate to counteract the surge
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QUESTION 4 / 25
What effect does liquid surge have on stopping distance?
Choose one answer below.
A
It reduces stopping distance
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B
It has no effect on stopping distance
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C
It increases stopping distance, especially with partial loads
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D
It only affects stopping distance when driving downhill
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QUESTION 5 / 25
Which type of tank experiences the strongest forward-and-back surge?
Choose one answer below.
A
Tanks with baffles
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B
Tanks with bulkheads
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C
Smooth bore (unbaffled) tanks
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D
Tanks with multiple compartments
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QUESTION 6 / 25
When driving a tank vehicle on an icy road, why is liquid surge particularly dangerous?
Choose one answer below.
A
It can cause the liquid to freeze solid
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B
The surge can push a stopped truck out into an intersection
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C
It makes the tires lose air pressure
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D
It causes the brakes to freeze
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QUESTION 7 / 25
What is the best technique for controlling surge when making a quick stop to avoid a collision?
Choose one answer below.
A
Pump the brakes rapidly
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B
Use controlled or stab braking
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C
Release the brakes completely
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D
Downshift only without using brakes
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QUESTION 8 / 25
A driver notices the truck lurches forward after each stop due to liquid surge. What is the most effective way to minimize this?
Choose one answer below.
A
Increase speed to get to the destination faster
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B
Brake far in advance and increase following distance
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C
Use the parking brake at every stop
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D
Drive only on highways
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QUESTION 9 / 25
What happens when liquid surges to the side of the tank during a turn?
Choose one answer below.
A
It improves traction
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B
It increases the risk of rollover
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C
It makes steering easier
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D
It has no significant effect
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QUESTION 10 / 25
Which driving technique helps control surge when accelerating from a stop?
Choose one answer below.
A
Accelerate rapidly to get up to speed quickly
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B
Accelerate gradually and smoothly
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C
Accelerate then immediately brake
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D
Use cruise control from the stop
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QUESTION 11 / 25
How does a tanker with baffles differ from a smooth bore tank in terms of surge?
Choose one answer below.
A
Baffled tanks have no surge at all
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B
Baffled tanks have less front-to-back surge but can still have side-to-side surge
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C
Baffled tanks have more surge in all directions
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D
There is no difference between them
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QUESTION 12 / 25
When approaching a curve in a tank vehicle, the driver should:
Choose one answer below.
A
Accelerate through the curve for better control
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B
Brake while in the curve if going too fast
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C
Slow to a safe speed before entering the curve
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D
Maintain highway speed throughout
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QUESTION 13 / 25
What is the term for the sloshing motion of liquid in a tank?
Choose one answer below.
A
Outage
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B
Baffling
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C
Surge
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D
Overflow
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QUESTION 14 / 25
A tanker driver is traveling at 55 mph and needs to stop. Compared to a dry van with the same weight, the tanker will likely:
Choose one answer below.
A
Stop in the same distance
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B
Stop more quickly due to liquid weight
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C
Require a longer stopping distance due to surge
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D
Stop more quickly when partially full
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QUESTION 15 / 25
Why are food-grade tankers like milk trucks typically unbaffled?
Choose one answer below.
A
Food products do not surge
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B
Sanitation regulations prohibit baffles due to cleaning difficulties
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C
Milk is too thick to surge
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D
Baffles would contaminate the food
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QUESTION 16 / 25
What is the purpose of baffles in a tank?
Choose one answer below.
A
To increase the tank capacity
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B
To slow down front-to-back surge of liquid
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C
To prevent side-to-side surge
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D
To heat the liquid
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QUESTION 17 / 25
How do bulkheads differ from baffles?
Choose one answer below.
A
They are the same thing
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B
Bulkheads are solid walls that create separate compartments; baffles have holes
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C
Bulkheads have holes; baffles are solid
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D
Bulkheads are only used in dry vans
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QUESTION 18 / 25
What type of surge do baffles NOT prevent?
Choose one answer below.
A
Forward surge
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B
Backward surge
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C
Side-to-side surge
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D
All surge types
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QUESTION 19 / 25
When loading a tank with bulkheads, why is weight distribution important?
Choose one answer below.
A
It affects fuel mileage only
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B
Uneven distribution can make the vehicle unstable
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C
Weight distribution does not matter with bulkheads
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D
It only affects the rear tires
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QUESTION 20 / 25
A tank has baffles with holes. What happens when the liquid moves through these holes?
Choose one answer below.
A
The liquid flows freely without restriction
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B
The holes slow down the liquid flow, reducing surge
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C
The holes speed up the liquid flow
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D
The holes prevent all liquid movement
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QUESTION 21 / 25
Which tank construction would experience the strongest surge effects?
Choose one answer below.
A
Tanks with multiple baffles
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B
Tanks with bulkheads creating compartments
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C
Smooth bore tanks with no internal structures
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D
Tanks with half-height baffles
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QUESTION 22 / 25
When unloading a tank with bulkheads, what should a driver be cautious about?
Choose one answer below.
A
Unloading too quickly
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B
Weight distribution changing as compartments empty
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C
The color of the liquid
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D
The temperature outside only
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QUESTION 23 / 25
What is an advantage of bulkheads over baffles in certain hauling operations?
Choose one answer below.
A
They completely eliminate all surge
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B
They allow carrying different products in separate compartments
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C
They make the tank lighter
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D
They are easier to clean
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QUESTION 24 / 25
Why do some drivers prefer baffled tanks over smooth bore tanks?
Choose one answer below.
A
Baffled tanks can carry more liquid
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B
Baffled tanks are easier to drive due to reduced surge
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C
Baffled tanks do not require inspections
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D
Baffled tanks are always lighter
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QUESTION 25 / 25
In a tank with both baffles and bulkheads, which statement is correct?
Choose one answer below.
A
The bulkheads create separate compartments, and baffles within each compartment control surge
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B
Baffles and bulkheads serve identical purposes
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C
Bulkheads are only for decoration
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D
Baffles create compartments while bulkheads control surge
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