The safe termination of guardrails has been a challenge ever since the risk of impacting the exposed end of the beam was identified. An untreated rail end exposes the errant vehicle to the potential of the rail spearing the vehicle, intruding into the occupant compartment, and bringing the vehicle to a violently abrupt stop. Crashworthy termination of a guardrail installation is essential anytime a guardrail is terminated within the clear zone of the highway. Methodologies for treating the terminal end of a guardrail include, but are not limited to, turning down the end, burying into a backslope, flaring away from the travel- way, and dissipating energy with heads that mount to the end of the rail element.


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