CDL Tanker Practice Test 2

Question 1

Why are specials skills and knowledge required to drive a tanker?

Accepted Answer

All of the above

Answer

Driving a tanker requires special skills and knowledge due to several unique characteristics. Tankers have a high center of gravity, making them more prone to rollovers. Additionally, the phenomenon of liquid surge, where the cargo sloshes inside, can destabilize the vehicle. These combined factors necessitate specific driving techniques and heightened awareness to operate safely.

Question 2

Dividers inside tankers that have holes in them are known as what?

Accepted Answer

Baffles

Answer

Baffles are partial dividers with holes inside tanker trucks, designed to reduce the sloshing motion of liquid cargo. Their primary purpose is to control forward-and-back surge, which helps stabilize the vehicle. Unlike bulkheads, baffles allow liquid to pass through, dampening movement without fully compartmentalizing the tank.

Question 3

Why are baffles used in some tankers?

Accepted Answer

To control forward-and-back liquid surge

Answer

Baffles are used in tankers to control the significant forward-and-back liquid surge that occurs during acceleration and braking. This sloshing motion, if unchecked, can destabilize the vehicle and make it difficult to control. By dampening the liquid's movement, baffles improve vehicle stability and safety.

Question 4

Why should you have sufficient outage in a tanker truck?

Accepted Answer

To reduce the chance of leaks due to liquid expansion

Answer

Sufficient outage refers to the empty space left at the top of a tanker's compartment after loading liquid cargo. This space is crucial because liquids expand when they get warm. Without adequate outage, the expanding liquid could build up dangerous pressure, potentially causing the tank to rupture or leak, creating a serious hazard.

Question 5

How should you drive on curves with a tanker vehicle?

Accepted Answer

Slow down before the curve, then accelerate through the curve

Answer

When driving a tanker vehicle on curves, it is essential to slow down significantly before entering the curve. This reduces the centrifugal force acting on the high center of gravity of the liquid cargo, which can cause instability. Accelerating gently through the curve helps maintain vehicle stability and traction, preventing dangerous liquid surge and potential rollover.

CDL Practice Test

CDL Practice Test

CDL Tanker Practice Test 2