HYDRAULIC-PLASTIC CUSHIONS FOR ATTENUATION OF ROADSIDE BARRIER IMPACTS

A REVIEW OF ACCIDENT EXPERIENCE SHOWS THAT COLLISION WITH FIXED HIGHWAY OBSTACLES IS AN IMPORTANT FACTOR. CUSHIONS CONSTRUCTED OF WATER-FILLED PLASTIC CELLS HAVE BEEN TESTED AND FOUND EFFECTIVE IN REDUCING THE SEVERITY OF BARRIER IMPACTS. HUMAN TOLERANCE DATA ARE BRIEFLY REVIEW. ACCELERATION PULSEFORMS RECOMMENDED IN THE LITERATURE ARE DISCUSSED IN THE LIGHT OF RECENT RESEARCH DEALING WITH VEHICLE-OCCUPANT-RESTRAINT INTERACTIONS. A VEHICLE PULSEFORM INCORPORATING A HIGH-G, SHORT-TIME, INITIAL PULSE IS SUGGESTED FOR CONSIDERATION. DATA OF SEVERAL CUSHIONED AND UNPROTECTED BARRIER COLLISIONS ARE COMPARED IN TERMS OF VEHICLE CRUSH, VEHICLE REBOUND AND COEFFICIENT OF RESTITUTION, MEASURED VEHICLE ACCELERATION HISTORIES, AND THE GADD INDEX OF SEVERITY APPLIED TO VEHICLE MEASUREMENTS. THE COMPARISONS SHOW A SIGNIFICANT ADVANTAGE IN SURVIVABILITY FOR CRASHES INVOLVING CUSHIONED BARRIERS. SOME ASPECTS OF THE CELLULAR CUSHION CONSTRUCTION ARE PRESENTED IN THE LIGHT OF DESIGN FLEXIBILITY AND MAINTAINABILITY. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 24-34
  • Monograph Title: Development of safer roadside structures and protective systems
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00203416
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 4 1994 12:00AM