49 CFR 383.119 lists the areas a tank vehicle endorsement applicant must have knowledge of. Which of the following appears on that list?

Explanation

Surge differences between liquids of different product densities is named directly, at 49 CFR 383.119(e). The section is a flat list of nine areas, (a) through (i), running from the causes, prevention, and effects of cargo surge, through braking when the vehicle is empty, full, and partially full, the handling of baffled and compartmented interiors against non-baffled vehicles, tank type and construction, product density, the effects of road grade and curvature with filled, half-filled, and empty tanks, proper use of emergency systems, and retest and marking requirements for drivers of DOT specification tank vehicles, to a closing catch-all for operating practices not otherwise specified. The three wrong options are all real subjects that live somewhere else: maximum allowable working pressure figures are construction specifications in 49 CFR Part 178 Subpart J, written for the people who build and certify cargo tanks rather than as a driver knowledge item, while segregation of incompatible materials belongs to the hazardous materials endorsement at 49 CFR 383.121 and coupling and uncoupling is named in the combination vehicle requirement at 49 CFR 383.111(c)(1). Knowing which endorsement owns which subject is worth as much on test day as knowing the facts themselves.

Source: 49 CFR 383.119(e)