How does highway guardrail absorb impact force

The main function of highway guardrail is to absorb huge impact forces, thereby ensuring the safety of driving vehicles. How does the highway guardrail works in this regard?

When an out of control vehicle collides with a guardrail board, because the highway guardrail of a highway is connected by semi-rigid corrugated highway guardrail through pillars, the impacted corrugated highway guardrail will absorb huge impact force through its own resolution and the deformation of pillars and crossbeams, thereby achieving the goal of changing the direction of the out of control vehicle's travel and avoiding the occurrence of vehicles rushing out of the road.

Driving on highways requires not only skilled driving skills, but also strong safety protection provided by highway guardrail.