Viewed from the rear, a liquid carrier has an elliptical shape. This indicates what type of carrier?

Viewed from the rear, a liquid carrier has an elliptical shape. This indicates what type of carrier?

• A. MC 331
• B. MC 306/DOT 406
• C. DOT 407
• D. IM-101

Answer: (B)

The shape you see at the rear is the key clue: an elliptical end indicates a low‑pressure cargo tank built for nonpressurized liquids. This silhouette is characteristic of MC‑306/DOT 406 tanks. They use dished, elliptical ends to handle internal pressure only at low levels, so from the back they look distinctly elliptical. High‑pressure tanks (and most other types) don’t show that same elliptical end when viewed from the rear; they have different end shapes such as spherical or more rounded/bulging ends, and other designs (like IM‑101 or DOT 407) have their own distinctive configurations. So the elliptical rear view points to a low‑pressure, nonpressurized liquid tank, specifically the MC‑306/DOT 406 type.

The shape you see at the rear is the key clue: an elliptical end indicates a low‑pressure cargo tank built for nonpressurized liquids. This silhouette is characteristic of MC‑306/DOT 406 tanks. They use dished, elliptical ends to handle internal pressure only at low levels, so from the back they look distinctly elliptical.

High‑pressure tanks (and most other types) don’t show that same elliptical end when viewed from the rear; they have different end shapes such as spherical or more rounded/bulging ends, and other designs (like IM‑101 or DOT 407) have their own distinctive configurations. So the elliptical rear view points to a low‑pressure, nonpressurized liquid tank, specifically the MC‑306/DOT 406 type.