Recommended Guidelines for Curb and Curb-Barrier Installations (2005) / Chapter Skim
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There have been a very limited number of full-scale crash tests on curb–barrier combinations and a large percentage of those tests involving the larger class of passenger vehicles such as the 2000-kg pickup truck were unsuccessful. Even the cases involving the 2000-kg pickup truck that satisfied the requirements of NCHRP Report 350 resulted in excessive damage to the barrier system or extreme trajectories and instability of the vehicle.
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From page 2... ...
. The use of curbs in conjunction with traffic barriers is addressed in section 5.6.2.1 of the Roadside Design Guide: Crash tests have shown that use of any guardrail–curb combination where high-speed, high-angle impacts are likely should be discouraged.
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From page 3... ...
Semirigid barriers include the widely used strong-post W-beam guardrails, which usually deflect laterally less than a meter in NCHRP Report 350 Test Level Three (TL-3) crash tests (2)
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From page 4... ...
The first phase of the project involved an in-depth review of published literature in order to identify information pertinent to the design, safety, and function of curbs and curb– barrier combinations on roadways with operating speeds greater than 60 km/h (37 mph)
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