ET-SS MASH Guardrail End Terminal

The MASH testing standard uses heavier vehicles and a wider range of impact angles for terminal testing, including 5˚ and 25˚ impacts. This results in a significant increase in impact energy when compared to the old NCHRP-350 terminal testing. The current Australian Standard AS/NZS 3845.1:2015 Road Safety Barrier Systems nominates MASH as the basis of testing procedures for road safety barrier systems.

The ET-SS system uses a proprietary head with front anchored technology to anchor the W-Beam from the loads exerted on the rail during an end-on or side vehicle impacts on the terminal. This front anchor also minimises the deflection of the downstream guardrail system to help contain and redirect an errant vehicle.

From end-on impacts within the MASH criteria, the W-Beam guardrail is flattened as it is guided through the head to the front anchor, this absorbs impact energy from the errant vehicle bringing it to a controlled and gradual stop.

The system has been fully crash tested to MASH TL3 and MASH TL2 as a re-directive, gating end terminal. 

Features:

• Tall and narrow impact head maximises the shy-line offset and saves on valuable verge width.
• 100% galvanized steel head and posts, designed for superior durability.
• The ET-SS head has the potential to be reused after impact. The ultimate decision of reusability rests with the specifying transportation authority.
• Unique anchorage design allows guardrail run to remain anchored during end on impacts, when impacted according to MASH Test Level 3 (TL3) guidelines.  

Assembly Advantages: 

• Splices at mid-span of the posts allow for easy assembly.
• Extruded rail is flattened and maintains connection to unit for quicker repair and clean-up.
• All steel design minimises debris often found with wood post options.
• Optional protection cover to help reduce the risks to vulnerable road users when impacting the front of the terminal.

 Specifications:

• Rail Height - 787mm
• Impact Head Width – 180mm
• System Length - TL-3: 15.48m
• Post Spacing From Post 2 through Post 8 – 1.905m
• Length of Need - Starts at post #3 for TL3 and post #2 for TL2

The ET-SS end terminal is available in two sizes. The compact 7.89m MASH Test Level 2 terminal is an economical solution for application for posted speeds up to 70km/h. The standard 15.48m MASH Test Level 3 terminal is acceptable for all posted speeds greater than 70km/h.