Which technique is primarily used to support a vehicle that is unstable?

The technique primarily used to support a vehicle that is unstable is stabilization. Stabilization involves securing the vehicle to prevent it from moving or rolling over during the rescue operation. This is crucial because an unstable vehicle poses a significant risk to both the victims inside and the rescue personnel.

Effective stabilization employs tools like struts, blocks, and sometimes even cribbing to distribute the weight of the vehicle and provide a solid foundation before further actions like extrication or patient care can commence. This technique ensures safety by eliminating the threat of the vehicle shifting unexpectedly.

While winching, leverage, and rescue rigging are all important techniques in vehicle rescue operations, they are typically used in different contexts, such as repositioning a vehicle or aiding in the extraction of victims, rather than primarily addressing the need to secure an unstable vehicle. Stabilization is the first and foremost action taken to manage the risks associated with an unstable vehicle situation.