When loading or unloading individual compartments of a bulkheaded tank, what must the driver pay close attention to?

49 CFR 383.119(i) (operating practices and procedures not otherwise specified); AAMVA CDL Manual Section 8.2.3, "Bulkheads," p.8-8-2

Emptying or filling compartments in the wrong order can shift too much weight toward one end of the vehicle, affecting steering and braking. Watching weight distribution during partial loads or unloads is a practical skill directly tied to this manual guidance.