What kind of roads are suitable for highway guardrails?

The sections suitable for using highway guardrails mainly include sections with high traffic flow, densely populated areas and commercial center sections, sections with specific slopes of road embankments and heights in certain areas, specific areas of highways or first-class roads for vehicles, gradient sections where the width of the roadbed changes parallel to railways or highways, sections with a curve radius less than a specific value, variable speed lane sections in service areas, parking areas, or bus stops, connection parts at both ends of large, medium, and small bridges or elevated structures with the roadbed, and places where guardrails are deemed necessary at traffic islands and separation islands.

The reasons for choosing to install guardrails in these sections mainly include ensuring the safety of pedestrians and vehicles, preventing vehicles from deviating from the road, and reducing the occurrence of traffic accidents, etc. Specifically:

Sections with high traffic flow need to set up roadside guardrails to ensure the safety of pedestrians and vehicles. It is also necessary to set up roadside guardrails in densely populated areas and commercial center sections to ensure the safety of pedestrian and vehicle traffic.

In sections where the slope of the road embankment and the height of the embankment are in specific areas, as well as in specific areas of highways or first-class roads for vehicles, guardrails should be installed when there are structures such as gantries, emergency phones, bridge piers, or abutments within 1.0 meters from the edge of the dirt shoulder.

Sections that are parallel to railways or highways, or gradient sections where the width of the roadbed changes, as well as sections with a curve radius less than a specific value, also need to install guardrails.

Variable speed lane sections in service areas, parking areas, or bus stops, as well as connection parts at both ends of large, medium, and small bridges or elevated structures with the roadbed, are also suitable for using highway guardrails. Guardrails should also be installed in places where it is deemed necessary at traffic islands and separation islands.