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Crash Performance - NCHRP 230 - Redirective, Non-Gating
The G-R-E-A-T (Guard Rail Energy Absorbing Terminal) System provides unequalled abilities for energy absorption and redirection in a narrow, compact unit. Ideal for narrow hazards, such as the ends of double-faced guiderails and at butterfly signs, this unit can be mounted directly onto the end of a concrete median barrier.
The G-R-E-A-T System consists of crushable Hex-Foam II cartridges surrounded by a framework of triple-corrugated steel guiderail. When hit head-on, the energy absorbing cartridges crush to dissipate the energy of the impact, while the steel guiderail side panels telescope. Only the cartridges and plastic nose cover are expended.
When hit from the side, these panels are restrained by leg pins and guidance cables to gently redirect the errant vehicle, resulting in little or no damage to the unit. After an impact, its energy absorbing effectiveness is easily and quickly restored.
The G-R-E-A-T System's flexible design provides protection for a wide variety of applications. Models are available to meet design speed for 5 to 70 mph, in standard widths of 2'0", 2'6" and 3'0".
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Suitablility for narrow - site hazards where no other system will fit.
Debris is contained within the replaceable Hex-Foam II cartridge assembly. No parts fly loose to cause possible secondary accidents.
A truck can quickly pull unit back into position. Renewal can be done by three men and a truck within a hour.
Most side-angle hits result in no damage to the unit.
The G-R-E-A-T System offers all the advantages of guardrail, including strength, low maintenance, and anti-climbing characteristics.
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