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Pennsylvania CDL Tanker Test Practice Questions - Pennsylvania Commercial Driver License (CDL) Tanker Vehicles Endorsement Test Exam
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Question
1
of 25
QUESTION 1 / 25
Under Pennsylvania CDL manual guidance, when is an N tanker endorsement required for a Class A or B CDL vehicle?
Choose one answer below.
A
Only when the liquid cargo is hazardous
✓
B
When hauling liquid or liquid gas in tanks over 119 gallons each with 1,000 gallons or more aggregate rated capacity
✓
C
Only when the tank is permanently mounted and completely full
✓
D
Only when the vehicle is a tractor-trailer combination
✓
QUESTION 2 / 25
What does PennDOT Section 8 say is the most important item to check on all tank vehicles?
Choose one answer below.
A
Paint condition
✓
B
Leaks
✓
C
Fuel mileage records
✓
D
Radio operation
✓
QUESTION 3 / 25
Why should a Pennsylvania tanker driver take highway curves and ramps well below posted speeds?
Choose one answer below.
A
Posted curve speeds are designed for tankers only
✓
B
Tankers can roll over at posted curve speeds because of high center of gravity and liquid movement
✓
C
Going below posted speeds is illegal for commercial vehicles
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D
A full tank eliminates all rollover risk
✓
QUESTION 4 / 25
What is liquid surge in a tank vehicle?
Choose one answer below.
A
The empty space left for expansion
✓
B
The movement of liquid inside the tank when speed or direction changes
✓
C
A pressure test mark on a DOT specification tank
✓
D
A valve used during unloading
✓
QUESTION 5 / 25
When is forward-and-back liquid surge usually strongest?
Choose one answer below.
A
With a partially filled smooth-bore tank
✓
B
With a completely empty tank
✓
C
With a dry van trailer
✓
D
With a sealed solid load
✓
QUESTION 6 / 25
What is outage or ullage in tanker loading?
Choose one answer below.
A
The cargo pump horsepower rating
✓
B
The empty space left in a tank for liquid expansion
✓
C
A failed tank inspection sticker
✓
D
The distance between baffles
✓
QUESTION 7 / 25
Why can a full tanker still be dangerous even though surge may be reduced?
Choose one answer below.
A
The tank becomes exempt from CDL rules
✓
B
The high center of gravity remains and rollover risk still exists
✓
C
The brakes stop working when a tank is full
✓
D
A full tank cannot be inspected
✓
QUESTION 8 / 25
What is the basic difference between baffles and bulkheads?
Choose one answer below.
A
Baffles have holes to slow liquid movement; bulkheads are solid dividers that create compartments
✓
B
Baffles are outside the tank; bulkheads are tire parts
✓
C
Baffles are always required in food-grade tanks; bulkheads are illegal
✓
D
There is no difference
✓
QUESTION 9 / 25
Which tank type has no internal baffles to slow liquid movement?
Choose one answer below.
A
Smooth-bore tank
✓
B
Compartmented tank with bulkheads
✓
C
Baffled tank
✓
D
Dry bulk hopper
✓
QUESTION 10 / 25
Before moving a tank vehicle after loading or unloading, which valve-related check is required?
Choose one answer below.
A
Make sure valves are in the correct position and not leaking
✓
B
Open every valve to reduce pressure
✓
C
Remove the discharge valves for inspection
✓
D
Ignore valves if the cargo is non-hazardous
✓
QUESTION 11 / 25
Why should a tanker driver increase following distance more than usual?
Choose one answer below.
A
Tankers always have weaker engines
✓
B
Liquid surge and heavy weight can increase stopping distance
✓
C
Following distance is only for passenger cars
✓
D
PennDOT requires tankers to stop at every intersection
✓
QUESTION 12 / 25
What should you do before entering a ramp curve in a tank vehicle?
Choose one answer below.
A
Slow to a safe speed before the curve
✓
B
Brake hard in the middle of the curve
✓
C
Accelerate to reduce liquid movement
✓
D
Steer sharply once inside the curve
✓
QUESTION 13 / 25
What does the N endorsement authorize in Pennsylvania CDL notation?
Choose one answer below.
A
Tank vehicles
✓
B
Passenger buses
✓
C
Double and triple trailers
✓
D
Hazardous materials only
✓
QUESTION 14 / 25
What score is required to pass a CDL knowledge test under FMCSA standards used by Pennsylvania?
Choose one answer below.
A
60 percent
✓
B
70 percent
✓
C
80 percent
✓
D
100 percent
✓
QUESTION 15 / 25
Which special-purpose equipment should be checked if the tanker has it?
Choose one answer below.
A
Vapor recovery kits, grounding and bonding cables, emergency shut-off systems, and built-in fire extinguishers
✓
B
Seat covers and sleeper curtains
✓
C
Entertainment screens and GPS voices
✓
D
Decorative tank lights only
✓
QUESTION 16 / 25
Why must manhole covers and vents be checked before driving a tanker?
Choose one answer below.
A
They affect radio reception
✓
B
Covers must have gaskets and close correctly, and vents must work to prevent unsafe pressure conditions
✓
C
They determine the legal speed limit
✓
D
They replace the need for valve checks
✓
QUESTION 17 / 25
What cargo condition most increases the need for smooth starts and stops?
Choose one answer below.
A
Partially filled liquid tanks
✓
B
An empty passenger compartment
✓
C
A pallet of boxed freight
✓
D
A flatbed load of lumber
✓
QUESTION 18 / 25
What should a driver remember about dense liquids in tank vehicles?
Choose one answer below.
A
A tank can be full regardless of weight if the product is non-hazardous
✓
B
Dense liquids may reach legal weight limits before the tank is full by volume
✓
C
Dense liquids prevent surge
✓
D
Dense liquids make baffles unnecessary
✓
QUESTION 19 / 25
What is the best response if you find a tank leak during inspection?
Choose one answer below.
A
Do not carry the liquid or gas in that tank
✓
B
Drive only if the leak is slow
✓
C
Open the vents and continue
✓
D
Cover the leak with tape and leave immediately
✓
QUESTION 20 / 25
What creates side-to-side surge risk in turns?
Choose one answer below.
A
Liquid moving toward the outside of the turn
✓
B
Air pressure in the steering tires only
✓
C
The CDL knowledge test format
✓
D
The tank color
✓
QUESTION 21 / 25
A Pennsylvania CDL applicant has a KTA for adding the N endorsement. What is the KTA used for?
Choose one answer below.
A
It authorizes the applicant to appear for the knowledge test
✓
B
It is a permit to haul liquids before testing
✓
C
It replaces the CDL medical certification
✓
D
It proves ELDT completion for all endorsements
✓
QUESTION 22 / 25
How long does PennDOT say a CDL Knowledge Test Authorization is valid?
Choose one answer below.
A
30 days
✓
B
Six months
✓
C
One year
✓
D
Five years
✓
QUESTION 23 / 25
What happens if a Pennsylvania applicant fails the knowledge test three times on the same KTA?
Choose one answer below.
A
The applicant must obtain another KTA under PennDOT procedures
✓
B
The N endorsement is issued automatically
✓
C
The applicant can no longer apply for a CDL
✓
D
Only the skills test must be repeated
✓
QUESTION 24 / 25
Which Pennsylvania form lists N as Tank Vehicles and X as Hazardous Materials and Tanker Vehicle?
Choose one answer below.
A
DL-31CD Commercial Learner’s Permit Application
✓
B
A vehicle title application
✓
C
A passenger-car registration renewal
✓
D
A crash report form
✓
QUESTION 25 / 25
Which applicant generally needs ELDT under PennDOT and FMCSA rules?
Choose one answer below.
A
A first-time Class A or Class B CDL applicant before the skills test
✓
B
Every driver adding only an N tanker endorsement to an existing CDL
✓
C
Any driver taking a non-commercial permit test
✓
D
Only drivers hauling water
✓
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