Four vehicular crash tests conducted on metal beam guardrail envelopes called bullnose barriers are reported. Large size passenger cars weighing about 4,900 lbs (2,220 kg) impacted the barriers at speeds of 41 to 64 mph (18 to 29 m/sec). Some barrier designs also included the following features: breakaway cable anchors, different post sizes, torsional post reinforcement, concrete footings, and a secondary cable restraint system. A bullnose design capable of stopping and containing a 60 mph (27 m/sec) head-on impact at low deceleration with no intrusion of barrier or vehicle components into the passenger compartment and little barrier debris was developed. However, a high speed vehicle impacting off-center at an angle into a similar barrier rode down the front of the barrier without being stopped or contained.
Vehicular Crash Tests of Four Bullnose Traffic Barrier Designs
1976
106 pages
Report
No indication
English
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