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How Does it Work?

When the 4Front sensor detects a frontal crash, it sends a signal to initiate three events that provide protection for the driver and first officer:


  1. The system tightens seat belts around the driver and first officer to position them securely in their seats.
  2. It pulls down suspension seats to their lowest position to increase survivable space.
  3. The system inflates a steering wheel airbag to protect the head and neck of the driver, while inflating a knee bolster airbag to protect the first officer’s knees.

These systems work together to dramatically reduce the risk of fatality or severe injury in a frontal collision.

IMMI reminds drivers to Click, Tug & Snug® every time they drive. Advanced safety systems can only do their jobs if firefighters are belted properly.