What are considered active safety devices?

Active safety devices are designed to prevent accidents or collisions, focusing on measures that proactively enhance safety while driving or operating a vehicle. Seatbelts, body armor, and the securing of equipment all fall under this category because they are directly involved in occupant protection and maintaining control of the vehicle.

Seatbelts are fundamental active safety devices that restrain occupants during a collision, minimizing injury. Body armor is critical for situations faced by peace officers, providing a protective measure against potential threats. Securing equipment ensures that any items within the vehicle do not become projectiles in the event of a crash, thus contributing to the overall safety of both the occupants and the operational integrity of the vehicle.

Other options, while important for safety, focus more on passive safety features or specific technologies. Airbags and crumple zones (the first option), for instance, activate during an accident but serve more as passive safety features—they help mitigate injury after a collision has occurred, rather than preventing one. Rearview mirrors and blind-spot detectors enhance visibility and awareness, but they do not actively restrain or secure occupants. Automatic emergency braking systems can be considered active as they intervene directly in driving but were not part of the highlighted answer's focus on immediate occupant safety and control.