MFRI Rescue Technician Vehicle and Machinery Extrication (VME) Practice Test 2025 - Free Rescue Technician VME Practice Questions and Study Guide

The correct answer is based on the general guidelines for the discharge timeline of an airbag reserve system after a vehicle's battery is disconnected. Airbag systems are designed with capacitors that can retain a charge for a certain period even when the power source is removed.

Typically, the airbag reserve can take anywhere from 30 seconds to 30 minutes to fully discharge. This time frame allows for safety protocols to be followed before working on or near the airbag system, ensuring that any residual voltage is no longer present, which could potentially trigger the airbags unintentionally during extrication or repair processes.

Understanding this time frame is crucial for rescue technicians and mechanics because it informs them of the necessary precautions and waiting periods before they engage in work on vehicles that have sustained damage or have deployed airbags, minimizing the risk of accidental airbag deployment.

In contrast, the other time frames provided do not accurately represent the safety guidelines for airbag systems, as those intervals do not align with the operational behavior of airbag systems following battery disconnection. This emphasizes the importance of adhering to recognized safety protocols in vehicle extrication and repair scenarios.