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Question

Difficulty: EasyBalance and Center of Gravity

A driver is securing multiple tiers of packaged freight inside a trailer. To keep the vehicle's center of gravity as low as possible and minimize rollover risk, how should the cargo be arranged?

  1. A
    Place the heaviest freight on the top layer to secure the lighter items beneath.
  2. Place the heaviest items directly on the trailer floor with lighter items loaded on top.Answer
  3. C
    Concentrate all heavy freight against the trailer rear doors to lighten front steering resistance.
  4. D
    Load heavy items along the right wall of the trailer to compensate for standard road crown.

Answer

The heaviest items should be placed directly on the trailer floor with lighter items loaded on top.
Loading the heaviest freight on the floor of the trailer keeps the center of gravity as low as possible. A low center of gravity ensures maximum stability and significantly reduces the risk of tipping or rolling over during transit.

Step-by-Step Solution

1
Analyze how vertical weight placement affects center of gravity.
Weight placed close to the trailer floor keeps the overall center of gravity lower.
A lower center of gravity increases stability and resistance to lateral rollover forces.
2
Determine the proper stacking order for mixed-weight cargo tiers.
Heavy cargo must form the base layer directly on the floor, while lighter packages are loaded on upper tiers.
Top-heavy loads dramatically increase the risk of rollover when cornering or making evasive maneuvers.

Key Concept

Maintaining a low center of gravity by loading the heaviest freight on the trailer floor
Estimated Time:45s
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Topics

Balance and Center of Gravity

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