What essential safety feature helps in emergencies for material handlers?

The essential safety feature that significantly aids material handlers in emergencies is the override controls. These controls provide operators with the ability to manually intervene in situations where automatic systems may fail or become unresponsive. In critical moments, such as when a machine malfunctions or an unexpected hazard is detected, override controls enable the operator to regain control, make immediate adjustments, or safely shut down operations. This capability is crucial for preventing accidents and ensuring a rapid response to emergencies, enhancing safety for both the operators and those in the vicinity.

While emergency alarms, backup power supplies, and stability supports are all important safety features in their own right, they serve different purposes. Emergency alarms alert personnel to a problem but do not allow for direct intervention. Backup power supplies ensure that equipment remains operational during a power outage, yet they do not directly facilitate emergency management. Stability supports are vital for maintaining the physical integrity of equipment but don't provide means for immediate operator action in response to an emergency. Thus, the override controls stand out as the feature that empowers operators to take decisive action in critical situations.