This article describes the first part of an investigation into safety glass for windscreens and the protection it offers against (1) penetration through the windscreen, (2) injuries to the head and brain by metal parts of the car body (secondary shock), and (3) injuries to the head and brain by the glass itself. In this part of the study only two types of standard glass were examined: laminated glass varying in glass and plastics thickness and toughened glass 5 mm thick. An impproved version of a 10 kg dummy was used in the tests to established a relation between glass and plastics thicknesses and the degree of tightening of the windscreen on the one hand and impact velocities the windscreen can withstand without exceeding permissible standards of human tolerance on the other. At an impact velocity of 60 km/h, the three safety requirements are fulfilled by the six combinations of laminated glass studied. Above 60 km/h, safe values can only be obtained through the controlled loosening of the sample.

  • Authors:
    • Breitenburger, G
    • Rodloff, G
  • Publication Date: 1971-12


  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00080907
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 6 1975 12:00AM