In addition to safety protection functions, highway guardrails also have multiple functions such as separating the roadway from pedestrian areas, preventing vehicles from deviating from the lane, reducing collision injuries, providing guidance functions, marking dangerous areas, beautifying the urban environment, and diverting traffic flow. These functions together ensure the safety, orderliness, and aesthetics of highway traffic.

Highway guardrail is a belt shaped protective and energy absorbing structure installed on the outside or central divider of highway lanes. Its main purpose is to absorb collision energy, buffer and guide through blocking, guardrail deformation, or vehicle climbing in the event of an accident, thereby blocking the vehicle and reducing the degree of injury to drivers and passengers. According to the location of the cross-section of the road, highway guardrails can be divided into roadside guardrails and central median guardrails. According to the degree of deformation after being hit by a vehicle, it can be further divided into rigid guardrails, semi-rigid guardrails, and flexible guardrails.

In terms of materials, highway guardrails have multiple options such as iron, stone, PVC, wood, stainless steel, glass, etc. to adapt to different environments and needs. These guardrails not only have protective functions, but also incorporate aesthetic and environmental elements, becoming an indispensable part of modern transportation construction.

With the advancement of technology and the growth of transportation demand, high-speed guardrails are also constantly developing and innovating. In the future, high-speed guardrails will pay more attention to environmental protection, energy conservation, and intelligence requirements. For example, using environmentally friendly materials and energy-saving technologies to manufacture guardrails to reduce their impact on the environment; Utilize intelligent sensing and control systems to achieve automatic detection and repair of guardrails; Combining the Internet of Things and big data technology to achieve remote monitoring and management of guardrails. These innovations will further improve the safety and efficiency of high-speed guardrails, providing a more solid guarantee for road safety.

High speed guardrail, also known as highway collision barrier, is a metal structure installed on both sides or the central divider of a highway. When a vehicle loses control or deviates from its normal driving trajectory, high-speed guardrails can effectively block the vehicle, prevent it from rushing into the opposite lane or falling into roadside ravines, thereby reducing the occurrence of traffic accidents and reducing accident losses.