Where should a relief cut or notch be made when performing a dashboard displacement?

When performing a dashboard displacement, the relief cut or notch should be made where the A-post meets the top of the dashboard. This area is critical because making the cut here allows for better access to the vehicle's interior and provides effective leverage for displacing the dashboard during a rescue operation. The A-post serves as a structural support for the vehicle's roof, and by cutting at this junction, it aids in creating a more controlled lift or push of the dashboard while reducing the risk of causing additional damage to the vehicle and minimizing movement of the patient inside.

This choice is based on the mechanics involved in the dashboard displacement technique, which focuses on safely creating space to extricate trapped occupants without causing further injury. When the cut is accurately placed at this location, it facilitates the necessary movement needed to disengage the trapped individual while maintaining structural integrity as much as possible for the rest of the vehicle.