THE RURAL MAILBOX: A LITTLE-KNOWN ROADSIDE HAZARD

The results of seven full-scale crash tests conducted at the Texas Transportation Institute to evaluate the impact behvior of rural mailbox installations are reported. Three of the seven tests--two of single-box installations and one of a four-box installation--involved commonly used wood-post supports. Two test of single-box installations involved promising new support concepts that use standard steel pipe with a breakaway mechanism. The final two tests involved a steel-pipe, multiple-box support in the shape of an inverted U. The results showed that installations with multiple boxes mounted on boards pose a serious hazard to motorists because the board can easily penetrate the windshield. The inverted-U design eliminated the penetration problem, but the change in vehicle momentum on impact exceeded the recommended limit. The results also showed that, for a single-box installation, a pipe post performs better than a wood post. Careful attention must be given to the box-to-post attachment to prevent separation during impact and thus minimize the potential for windshield penetration by the mailbox. (Authors)

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 4-12
  • Monograph Title: Roadside hazards, traffic barriers, and safety appurtenances
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00331271
  • Record Type: Publication
  • ISBN: 0309031133
  • Files: TRIS, TRB
  • Created Date: Oct 28 1981 12:00AM