An important attribute of Thrie beam guardrail is its high level of performance especially for large vehicles. Due to the greater height of the rail face, Thrie beam guardrail provides reduced deflection and improved resistance to vehicle vaulting or under running. The reduced dynamic deflection and maintenance demand makes Thrie beam guardrail ideally suited for major facilities carrying a high volume of high-speed traffic. Thrie beam guardrail should also be used in transition from Flexbeam guardrail to more rigid barriers. This significantly reduces the deflection of the barrier system at transition to the rigid barrier.
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