Why does a smooth-bore tank require extra care when accelerating and stopping?
Correct answer: B – It has no internal structures to slow the liquid's flow.
A smooth-bore, or unbaffled, tank has nothing inside to slow the liquid's movement. This allows strong forward-and-back surge, particularly when the vehicle starts or stops. The Nevada manual instructs drivers to operate these tankers slowly and carefully.
Source: Nevada Commercial Driver’s License Manual — § 8.2.5, “Un-baffled Tanks”

