What is the main function of baffles inside a liquid tank?
Correct answer: B – To limit forward-and-back liquid surge
Baffled tanks contain bulkheads with openings that allow liquid to pass through. The baffles reduce forward-and-back liquid surge, helping the driver maintain control during acceleration and braking. They do not eliminate side-to-side surge or create fully separated cargo compartments.
Source: Commercial Driver’s License Manual — § 8.2.4, “Baffled Tanks”

