DYNAMIC TESTS OF AN ENERGY ABSORBING BARRIER EMPLOYING SAND- FILLED PLASTIC BARRELS

THIS REPORT VALIDATES RESEARCH ON ENERGY ABSORBING BARRIERS EMPLOYING SAND-FILLED FRANGIBLE PLASTIC BARRELS, AS TESTED IN VARIOUS STATES AND BY THE MANUFACTURER. THE TEST BARRIERS WERE COMPOSED OF AN ARRAY OF 15 TO 17 FRANGIBLE PLASTIC CYLINDERS, CONTAINING SAND IN VARYING AMOUNTS. THE BARRIERS WERE 21' AND 25' LONG AND TAPERED FROM A 3' WIDTH AT THE NOSE TO A 9' WIDTH AT THE REAR. THE BARRIERS WERE DESIGNED FOR PLACEMENT IN FRONT OF FIXED OBJECTS LOCATED IN FREEWAY GORES. TWO SEDANS, WEIGHING APPROXIMATELY 4700 LBS., STRUCK THE NOSE OF THE BARRIER HEAD-ON AND AT A 15 DEGREES ANGLE. A SMALL, SEDAN WEIGHING ABOUT 1900 LBS., STRUCK THE NOSE OF THE BARRIER HEAD-ON. ALL VEHICLES HAD IMPACT VELOCITIES SLIGHTLY LESS THAN 60 MPH. THE DRIVER DUMMY IN EACH VEHICLE WAS RESTRAINED WITH A LAP BELT. RECORDED AVERAGE, LONGITUDINAL, VEHICULAR, PASSENGER COMPARTMENT DECELERATIONS, FOR THE HIGHEST 50 MILLISECOND PERIOD, RANGED FROM 7.9 TO 10.7 G'S. IN GENERAL, THESE VALUES WERE CONSIDERED TOLERABLE FOR LAP-BELTED PASSENGERS AND WOULD HAVE RESULTED IN NO MORE THAN MODERATE INJURIES IN MOST CASES. HOWEVER, THE COMPUTED GADD SEVERITY INDEX (FROM HEAD DECELERATIONS) FOR THE LAP-BELTED DUMMY DRIVER IN THE LIGHT SEDAN INDICATED FATAL HEAD INJURIES WERE INCURRED. FULLY RESTRAINED OCCUPANTS (LAP BELT AND SHOULDER HARNESS) WOULD PROBABLY HAVE SUSTAINED LITTLE OR NO INJURY. THE BARRIER WAS JUDGED ACCEPTABLE IN THE AREAS OF COST, EASE OF CONSTRUCTION AND MAINTENANCE, AESTHETICS, SIMPLICITY AND VERSATILITY AND IS RECOMMENDED FOR USE IN OPERATIONAL TRIAL INSTALLATIONS. /AUTHOR/

  • Corporate Authors:

    California Division of Highways

    Bridge Department
    Sacramento, CA  USA  05914

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Nordlin, E
    • Stoker, R
    • Doty, R N
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00203169
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Study No D-4-69
  • Files: TRIS, USDOT
  • Created Date: Mar 27 1972 12:00AM