Which of the following is considered a type of crash-tested railing feature?

The Wyoming 2-tube steel rail is considered a type of crash-tested railing feature because it has been specifically designed and tested to absorb energy in the event of a vehicle impact. This type of rail is manufactured according to standards that ensure its performance in real-world crash situations, providing safety and reducing the severity of accidents.

Crash-tested railings undergo rigorous evaluations to assess their ability to withstand impacts and reduce the risk of vehicle penetration and occupant injury. The Wyoming 2-tube design incorporates structural integrity and resilience, making it a suitable choice for highway and bridge applications where vehicle safety is paramount.

In contrast, the other options do not meet the same criteria for crash testing or do not specifically represent features designed for such purposes. While each of those may serve a protective role, they lack the dedicated testing and design elements exemplified by the Wyoming 2-tube steel rail.