Departure Terminals

Providing a forgiving roadside environment reduces the consequences for vehicles leaving the safe, travelled way. Hazards such as trees, utility poles, culverts and embankments are often located adjacent to roadways and relocating them is often impractical. In these instances, shielding with a longitudinal safety barrier is the most appropriate solution.

Roadside safety barrier designs have developed over the years and are used to safely contain and re-direct errant vehicle away from nearby hazards. Safety barriers reduce the severity of run-off-the-road crashes and have made a significant contribution to the safety of our region’s roads.

departure terminals road guardrail system
departure terminal on the trailing end of a guardrail system
departure terminal road safety barrier

Steel guardrail barriers typically comprise a rail element, either w-beam or thriebeam. Adjacent rails are bolted together forming a splice connection and end terminals are placed at either end to anchor the system.

Departure terminals, also known as trailing terminals, are the specially designed end pieces located at the trailing end of a steel w-beam guardrail system.

Departure terminals are designed to anchor the guardrail system and introduce the necessary tensile and flexural strength required for safe vehicle containment and re-direction throughout the length-of-need section.

Whilst some end terminals also provide the additional feature of reducing the severity of an impact near or at the end of the system, this does not apply to departure terminals. As a consequence, departure terminals should only be used when they are located outside the clear zone of approaching traffic or when shielded from approach traffic by another barrier.