CDL Tank Vehicle Endorsement/Topics/Baffles Compartments
Baffles Compartments covers 10 questions in the QuizCram bank (13% of all questions), ranking as the biggest domain for the CDL tank vehicle endorsement exam. Questions are written against the official Original practice questions on the tank vehicle endorsement, written from the federal knowledge requirements in 49 CFR Part 383 and the public CDL manual facts. The real test is a multiple-choice knowledge test, and you need 80% to pass. Try the 2 free sample questions below to test your understanding of these core rules.
10 questions, the biggest topic. The ring is its size next to the biggest.
Baffles compartments1 of 2
The answer
Answer: D. The holes let the liquid flow through the baffles, which control the forward and backward surge. No walls, sealed compartments without holes and lids with vents describe other designs, whereas baffles are walls with holes, which let the liquid flow but slow its movement.
Source: 8.2.4 - Baffled Tanks
Baffles compartments2 of 2
The answer
Answer: A. Smooth bore tanks have nothing inside to slow down the flow of the liquid. Open top, double wall and pressure tanks describe construction or use, whereas smooth bore means no baffles inside, so the liquid can move freely and surge more strongly.
Source: 8.2.5 - Un-baffled Tanks
QuizCram covers 10 practice questions in the Baffles Compartments domain, mapped directly to the official examination blueprint.
The benchmark score is 80% (Multiple-choice knowledge test · 80% to pass (49 CFR 383.135) · item count set by your state).
Yes. All questions on QuizCram are written against official handbooks and blueprint specifications with legal citations.