UNDERRIDE/OVERRIDE OF AUTOMOBILE FRONT STRUCTURES IN INTERVEHICULAR COLLISIONS-VOL 1-HEAVY VEHICLE REAR UNDERRIDE-FINAL REPORT

ANALYTICAL AND EXPERIMENTAL RESULTS OBTAINED IN A STUDY OF REQUIREMENTS AND PERFORMANCE OF REAR UNDERRIDE GUARDS FOR HEAVY VEHICLES ARE PRESENTED. SIX TESTS USING A RIGID SIMULATED UNDERRIDE GUARD MOUNTED ON A SAE BARRIER ARE DESCRIBED. SIX FULL-SCALE TESTS WERE ALSO PERFORMED, USING PROTOTYPE UNDERRIDE GUARD DESIGNS MOUNTED ON THE REAR OF SEMITRAILER TRUCKS. THE EFFECTS OF IMPACTING VEHICLE SIZE AND WEIGHT, IMPACT VELOCITY, RIGID AND YIELDING UNDERRIDE GUARDS, AND UNDERRIDE GUARD GROUND CLEARANCE HEIGHT ARE AMONG THE PARAMETERS INVESTIGATED. DATA ON PERTINENT AUTO AND TRUCK GEOMETRIC CHARACTERISTICS AND ON VARIOUS ENERGY DISSIPATING SYSTEMS FOR POSSIBLE APPLICATION TO TRUCK UNDERRIDE GUARD ARE PRESENTED AND DISCUSSED. RESULTS FROM A COMPUTER MODEL OF VEHICLE COLLISIONS WITH AN UNDERRIDE GUARD USED TO EXPLORE THE EFFECTS OF VARIOUS GUARD LOAD-DEFLECTION PROPERTIES ON VEHICLE IMPACT RESPONSE ARE DESCRIBED. RECOMMENDATIONS FOR UNDERRIDE GUARD REQUIREMENTS AND COMPLIANCE TESTS ARE GIVEN. /HSL/

• Supplemental Notes:
  • Rept No CAL-VJ-2844-V-3
• Corporate Authors:

  Cornell Aeronautical Laboratory, Incorporated

  4455 Genesee Street
  Buffalo, NY  United States  14221
• Authors:
  • DeLeys, N J
  • Ryder, M O
• Publication Date: 1971

Media Info

• Features: References;
• Pagination: 191 p.

Subject/Index Terms

• TRT Terms: Design; Energy absorbing materials; Rear end crashes; Trucks; Underride guards; Underride override crashes
• Old TRIS Terms: Energy absorbers
• Subject Areas: Design; Highways; Motor Carriers; Safety and Human Factors;

Filing Info

• Accession Number: 00223901
• Record Type: Publication
• Source Agency: Highway Safety Literature
• Files: TRIS
• Created Date: Jan 17 1973 12:00AM