In addition to inherently safer design, which of the following is another strategy for safety?

Passive safety is a recognized strategy for enhancing safety in design and engineering. It refers to systems that are designed to reduce risks without requiring active intervention or input from users. This means that in the event of an emergency or system failure, passive safety measures provide built-in redundancy or containment that minimizes the potential for harm.

For instance, structural designs that can withstand certain natural disasters—like earthquakes or floods—without requiring human action illustrate how passive features enhance safety. Such systems often rely on the natural properties of materials or design configurations that limit the potential consequences of an incident.

In contrast, other strategies listed, such as unrestricted, experimental, and discretionary, do not align with established safety principles. These approaches do not inherently provide a reduction of risk through design; instead, they may rely more on active management or intervention rather than designing risk out of the system. This makes passive safety a critical element in achieving robust and reliable safety outcomes.