What type of barriers are used to shield errant vehicles from hazards that cannot be relocated?

Roadside barriers are specifically designed to shield errant vehicles from hazards that cannot be relocated, such as trees, cliffs, or bodies of water. These barriers are constructed to absorb the impact of a vehicle and redirect it back onto the roadway, enhancing safety for both drivers and passengers. They are often made of strong materials like concrete, steel, or plastic and can be installed in various configurations depending on the specific site conditions and safety needs.

In contrast, traffic cones, warning signs, and speed bumps serve different functions. Traffic cones are primarily used for temporary traffic control and do not offer significant protection from hazards. Warning signs inform drivers of potential dangers ahead but do not physically prevent a vehicle from veering off course. Speed bumps are designed to slow down traffic but do not provide the same level of protection as roadside barriers against fixed hazards. Hence, roadside barriers are the appropriate choice for this scenario.