What is the purpose of a car's anti-collision beam?

[LaVivienne]

Car anti-collision beams are U-shaped channels pressed from cold-rolled steel plates and connected to the frame longitudinal beams. As the first barrier of passive safety in automobiles, anti-collision steel beams are crucial safety devices that absorb and mitigate external impacts, protecting the front and rear parts of the vehicle body. Anti-collision beams are divided into front and rear types. The front anti-collision steel beam is connected to the vehicle's body longitudinal beams, protecting components like the radiator and reducing damage in minor accidents. They are typically made of steel, fiberglass, or aluminum alloy, with a thickness ranging from 1.5 to 3mm. The front anti-collision steel beam is usually covered by a layer of foam supporting the outer plastic skin, primarily serving pedestrian protection. The rear anti-collision beam is generally thicker than the front one, around 2 to 3mm, and is connected to the longitudinal beams under the vehicle chassis. Its purpose is to reduce impact in minor rear-end collisions, protecting the thin spare tire rack and rear fenders. Without a rear anti-collision beam, even a slight rear-end collision can cause damage as the plastic skin cannot withstand any impact.