Alberta Commercial Driver Practice Exam Prep – Practice Test & Study Guide

The correct placement of the heaviest items in a trailer is low and towards the front. This positioning helps maintain the center of gravity of the load, which is crucial for ensuring stability during transport. By having the heavier items located lower in the trailer, the risk of tipping or swaying is minimized, as a lower center of gravity provides better balance.

Additionally, placing heavy items towards the front helps enhance the weight distribution on the trailer's axles, preventing overloading of one end, which can lead to handling difficulties or even accidents. Proper load distribution also aids in better braking performance since the trailer and tow vehicle interact more effectively when the weight is well-balanced.

The other placement options could introduce various risks. For instance, placing heavy items at the back can cause the front of the trailer to lift, leading to loss of control. Similarly, stacking heavy items on top of others compromises the load's stability and increases the likelihood of items shifting during transit. Lastly, a centralized load may balance the load but does not address the need for the center of gravity, especially when the configuration might lead to instability.