What is the purpose of step chocks in vehicle stabilization?

Step chocks are specifically designed to enhance the stabilization of a vehicle during rescue operations. Their purpose is to provide additional support by being placed under the tires, thereby preventing any movement and ensuring that the vehicle remains steady.

By forming a series of steps with these chocks, rescuers can effectively minimize the risk of the vehicle shifting or rolling, particularly when accessed by personnel or when stabilizing a vehicle in a precarious position. The arrangement of these chocks allows for better load distribution and helps to maintain a safe working environment during extrication efforts.

While other options mention potential functions, they do not accurately represent the primary role of step chocks. They are not intended to function as a communication device, nor do they create barriers around the vehicle or solely support its weight; rather, they are all about aiding in the stabilization process.