An end treatment located at the approach end of the guardrail system that may be impacted head-on due to the direction of traffic. It anchors the guardrail system and is considered crashworthy for head-on collisions.

A type of impact attenuator at the approach end of guardrail that may be impacted head-on due to the direction of traffic. It can be used in the same way as an approach terminal, but it’s generally more energy-absorbing and repairable. 

End treatments are used to terminate the ends of guardrail runs and anchor the system for crashworthiness. For inspection purposes, end treatments include approach terminals and trailing terminals. 

A crashworthy roadside barrier intended to shield errant roadway departure vehicles from impacting more severe hazards. Guardrail ends must terminate with an end treatment, a crash cushion, or a connection to concrete barrier or traffic railing.

AASHTO ‘Manual for Assessing Safety Hardware’ which is an update to and supersedes the NCHRP 350. It is the latest uniform set of guidelines for crash-testing permanent and temporary safety highway devices, such as guardrail, crash cushions, and end treatments. 

A crashworthy device that has been approved using the MASH testing requirements. 

National Cooperative Highway Research Program Report 350 entitled ‘Recommended Procedures for the Safety Performance Evaluation of Highway Features’ which established guidelines for conducting full-scale crash tests for permanent and temporary highway safety devices, such as guardrail, crash cushions, and end treatments.

A crashworthy device that has been approved using the NCHRP testing requirements. 

An end treatment located at the downstream end of the guardrail system that must not be impacted head-on due to the direction of traffic. It anchors the guardrail system, but it’s not considered crashworthy for head-on collisions.