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Bumper Trajectories During High-Speed Impacts with 6-in. Curbs. Ronald K. Faller, Ph.D., P.E. Midwest Roadside Safety Facility (MwRSF) University of Nebraska-Lincoln TRB Committee AFB 20 June 15-18, 2008 Jackson, Wyoming. Introduction.
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Bumper Trajectories During High-Speed Impacts with 6-in. Curbs Ronald K. Faller, Ph.D., P.E. Midwest Roadside Safety Facility (MwRSF) University of Nebraska-Lincoln TRB Committee AFB 20 June 15-18, 2008 Jackson, Wyoming
Introduction • MGS placed 6 in. (mid-face) behind 6-in. high, AASHTO Type B curb met TL-3 of NCHRP 350 • Pooled Fund States sponsored study to determine performance limits of MGS behind 6-in. curbs • allow for some variability in MGS placement • allow for sidewalk placement in front of MGS • reduce snow plow impacts with rail & resulting damage • determine lateral offset when MGS needs to be raised • Obtain bumper trajectories for curb impacts with pickup trucks and small cars • Evaluate critical MGS offsets using MASH 08
Vehicle-Curb Test - MGSC-1 (2270P) 4,966 lbs 62.2 mph 25 deg
Vehicle-Curb Test - MGSC-2 (2270P) 4,966 lbs 62.6 mph 25 deg
Vehicle-Curb Test - MGSC-3 (1100C) 2,544 lbs 61.6 mph 25 deg
Vehicle-Curb Test - MGSC-4 (2000P) 4,479 lbs 62.5 mph 25 deg
Critical Override Impact Point Critical Point Critical Point