SD CDL - South Dakota Commercial Drivers License Tank Vehicle Rules Questions and Answers

Question 1

You are driving a tank vehicle with baffled compartments. When making a turn, what type of liquid surge should you still be most concerned about?

Accepted Answer

Side-to-side surge

Answer

Forward and backward surge

Answer

Vertical surge against the top of the tank

Answer

Baffles eliminate all types of surge

Question 2

What is the primary reason that 'smooth bore' or unbaffled tank trucks are used for certain loads, like milk?

Accepted Answer

Sanitation regulations require tanks that can be thoroughly cleaned.

Answer

They are less expensive to manufacture.

Answer

They create less liquid surge than baffled tanks.

Answer

They are required for hauling all hazardous materials.

Question 3

A driver is loading a dense liquid into a large tank. Even if the tank is not filled to its volume capacity, what is the most likely reason the driver must stop loading?

Accepted Answer

The legal weight limit for the vehicle has been reached.

Answer

The liquid needs more outage space than less dense liquids.

Answer

The vapor recovery system has activated automatically.

Answer

The vehicle's high center of gravity becomes too unstable.

Question 4

The term 'outage' refers to which of the following when loading a liquid tank?

Accepted Answer

The empty space left in a tank to allow for liquid expansion.

Answer

The process of cleaning a tank after unloading.

Answer

A power failure in the pumping equipment during loading.

Answer

The amount of liquid lost due to a minor leak during transit.

Question 5

You are driving a partially filled, unbaffled tanker and need to come to a stop. What is the greatest danger caused by liquid surge?

Accepted Answer

The surge can push the stopped truck into an intersection.

Answer

The surge can cause the engine to stall.

Answer

The surge can damage the internal lining of the tank.

Answer

The surge can cause the front wheels to lift off the pavement.

Question 6

Which of the following is a critical safe driving rule specific to tank vehicles due to their high center of gravity and the effects of liquid surge?

Accepted Answer

Slowing down well before a curve and then accelerating slightly through it.

Answer

Driving faster than the posted speed limit to minimize time on the road.

Answer

Making sudden lane changes to avoid obstacles.

Answer

Applying brakes hard and late when approaching a stop.