49 CFR 383.119: Requirements for tank vehicle endorsement.

In order to obtain a tank vehicle endorsement, each applicant must have knowledge covering the following:

(a) Causes, prevention, and effects of cargo surge on motor vehicle handling;

(b) Proper braking procedures for the motor vehicle when it is empty, full, and partially full;

(c) Differences in handling of baffled/compartmented tank interiors versus non-baffled motor vehicles;

(d) Differences in tank vehicle type and construction;

(e) Differences in cargo surge for liquids of varying product densities;

(f) Effects of road grade and curvature on motor vehicle handling with filled, half-filled, and empty tanks;

(g) Proper use of emergency systems;

(h) For drivers of DOT specification tank vehicles, retest and marking requirements; and

(i) Operating practices and procedures not otherwise specified.