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CDL Practice Test: Tankers

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CDL Practice Test: Tankers

Tankers Questions

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Good Luck!

What term describes the following statement: Liquids expand as they warm and you must leave room for the expanding liquid.
  • Outage
  • Frontage
  • Contraction
  • None of these answers are correct
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Liquids expand as they warm and you must leave room for the expanding liquid. This is called "outage."

Next
Regarding stopping distance while driving a tanker, which statement is false?
  • Fully loaded tankers take longer to stop than empty ones
  • Wet roads double the normal stopping distance
  • Liquid surge may force your truck forward after you have already come to a complete stop
  • All of these statements are true
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Stopping distance - Keep in mind how much space you need to stop your vehicle. Remember that wet roads double the normal stopping distance. Empty tank vehicles may take longer to stop than full ones.

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Next
Which statement below is false?
  • Liquid tankers are harder to stop in an emergency than other types of vehicles
  • Tanker vehicles have a higher center of gravity
  • Liquid tankers are easier to roll over
  • All tankers have baffle devices to limit sloshing of liquids
This is a question from page 60 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Hauling liquids in tanks requires special skills because of the high center of gravity and liquid movement. A high center of gravity means that much of the load's weight is carried high up off the road. This makes the vehicle top-heavy and easy to roll over. Liquid tankers are especially easy to roll over. Tests how that tankers can turn over at the speed limits posted for curves. Take highway curves and on-ramp/off-ramp curves well below the posted speed limits.

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Next
Which of these tanker trucks are the least likely to have baffles installed
  • A tank carrying milk
  • A tank filled with propane
  • A tank carrying automotive gasoline
  • A tank filled with oil
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Unbaffled liquid tankers (sometimes called "smooth bore" tanks) have nothing inside to slow down the flow of the liquid. Therefore, forward-and-back surge is very strong. Unbaffled tanks are usually those that transport food products (e.g., milk). (Sanitation regulations forbid the use of baffles because of the difficulty in cleaning the inside of the tank.) Be extremely cautious (slow and careful) in driving smooth bore tanks, especially when starting and stopping.

TruckingTruth's Advice:

Baffles make cleaning the inside of a tank vehicle very difficult. Since most food grade tankers have to be completely clean and sanitary before each load, it is very rare for food grade tankers to have baffles.

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Next
While driving a liquid tanker without Anti-Lock Brakes, all of the following statements are true, except:
  • Use controlled braking to avoid an accident
  • Steer quickly and swerve around a hazard while braking at the same time
  • All of these answers are true
  • Use stab braking to avoid an accident
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

To drive tank vehicles safely, you must follow all safe driving rules:

Braking – If you must make a quick stop to avoid an accident, use controlled or stab braking. If you do not remember how to stop using these methods, review Section 2.13. Also, remember that if you steer quickly while braking, your vehicle may roll over.

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Next
When loading a tank, you should:
  • Expect liquid to evaporate and lighten your gross weight over time
  • Use disposable baffles and barriers when hauling food grade tankers
  • Never load a cargo tank so that it's totally full
  • Always load a cargo tank with "filler" so that it's completely filled
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Never load a cargo tank totally full. Liquids expand as they warm and you must leave room for the expanding liquid. This is called "outage." Since different liquids expand by different amounts, they require different amounts of outage. You must know the outage requirement when hauling liquids in bulk.

A full tank of dense liquid (such as some acids) may exceed legal weight limits. For that reason, you often may only partially fill tanks with heavy liquids. The amount of liquid to load into a tank depends on:

  • The amount the liquid will expand in transit.
  • The weight of the liquid.
  • Legal weight limits.
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Next
All of the following require a Tanker endorsement, except:
  • Large tanks of more than 1,000 gallons enclosed in a box trailer
  • Tank that is permanently attached to the vehicle chassis
  • Portable tank with a rated capacity of 10,000 gallons
  • Portable tanks with a rated capacity of less than 1,000 gallons
This is a question from page 60 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

A "tank vehicle" is used to carry any liquid or gaseous material in a tank that is permanently or temporarily attached to the vehicle or chassis. However, this does not include portable tanks with a rated capacity of less than 1,000 gallons.

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Next
All of the following statements about Liquid Surge are correct, except:
  • If the truck is on a slippery surface such as ice, the wave can shove a stopped truck out into an intersection
  • When the surge hits the end of the tank, it tends to push the truck in the opposite direction the wave is moving
  • Results from movement of the liquid in partially filled tanks
  • When coming to a stop, the liquid will surge back and forth
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Liquid surge results from movement of the liquid in partially filled tanks. This movement can have bad effects on handling. For example, when coming to a stop, the liquid will surge back and forth. When the wave hits the end of the tank, it tends to push the truck in the direction the wave is moving. If the truck is on a slippery surface such as ice, the wave can shove a stopped truck out into an intersection. The driver of a liquid tanker must be very familiar with the handling of the vehicle.

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