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CDL · Outage and Loading

How should the weight of liquid cargo be distributed when loading a tank with multiple compartments or bulkheads?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

The load should be balanced so that weight is distributed legally across the axles and the vehicle handles safely, following the carrier's loading plan for the compartments

  1. A All weight should be loaded over the rear axle
  2. B The load should be balanced so that weight is distributed legally across the axles and the vehicle handles safely, following the carrier's loading plan for the compartments
  3. C Weight distribution does not matter in tanks
  4. D Load only the front compartment first, always

Why this is the answer

Tanks with bulkheads or multiple compartments must be loaded so the weight is properly balanced across the axles and within legal limits, and so the vehicle remains stable to drive. Improper distribution can overload an axle, hurt handling, or create dangerous surge between compartments. Drivers should follow the carrier's loading instructions for which compartments to fill and to what level. Balancing the load also helps with braking and traction. After loading, the driver verifies the cargo is secured, valves and covers are closed, and the vehicle is within weight limits before moving.
Source: FMCSA CDL Manual 8.3.2 Proper Loading

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About this topic: Outage and Loading

Outage is the space left in a tank so the liquid can expand as it warms; loading questions ask how much to leave, why it depends on the product, and how weight limits can be reached before the tank is full. This is one of 11 Tanker questions on outage and loading, each with a full explanation on a single study page.

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