What is a common consequence of not engaging the parking brake when leaving the stacker?

The correct response highlights the importance of engaging the parking brake as a critical safety measure when leaving a stacker. Not doing so may result in the stacker rolling away, which poses significant risks not only to the equipment itself but also to the safety of personnel in the vicinity.

When the parking brake is not engaged, the stacker's weight and any incline of the surface it is parked on can lead to unintentional movement, which could cause accidents, injuries, or damage to property. The parking brake creates a secure hold on the vehicle, ensuring it remains stationary until the operator is ready to use it again.

This scenario underscores the vital role of safety protocols in preventing workplace accidents. Proper training on the use of equipment, including the importance of utilizing safety features such as parking brakes, is essential in maintaining a safe working environment.