RESEARCH AND DEVELOPMENT OF A GUIDE RAIL SYSTEM FOR A HIGH- SPEED ELEVATED EXPRESSWAY

THE PROVINCE OF QUEBEC STUDIED ACCIDENTS ON A 7-MI LONG, 6-LANE ELEVATED EXPRESSWAY IN MONTREAL. MANY CAUSES FOR THE HIGH RATE OF ACCIDENTS WERE FOUND, BUT MAINLY IT WAS DUE TO POOR PERFORMANCE OF THE GUIDE RAIL SYSTEM. STUDIES WERE THEN CONDUCTED FOR THE DESIGN OF A NEW RAIL SYSTEM TO MEET THE ACTUAL TRAFFIC CONDITIONS. THE TESTS MADE ON 8 DIFFERENT KINDS OF GUIDE RAILS FOR USE OF HEAVILY TRAVELED ELEVATED EXPRESSWAY SHOWED THAT A CONCRETE WALL GIVES THE BEST PERFORMANCE UNDER THE TEST CONDITIONS. THE INSTALLATION RECOMMENDED INVOLVED THE RETENTION OF THE EXISTING SAFETY BARRIER AND THE ADDITION OF A SECOND LINE OF PROTECTION, NAMELY, A SMALL CONCRETE WALL BUILT ON THE EXISTING CURB. ON THE RAMPS, WHERE VEHICLES TRAVEL IN A SINGLE LANE, THE QUESTION OF REBOUND IS NOT SO IMPORTANT AS ON THE ELEVATED SECTION. FOR THIS REASON, IT WAS RECOMMENDED THAT THE TYPE OF GUIDE RAIL BUILT SHOULD BE CAPABLE ONLY OF RESTRAINING IMPACTING VEHICLES.

Media Info

  • Media Type: Print
  • Features: Figures;
  • Pagination: pp 36-65
  • Monograph Title: Geometric design, barrier rails and sign supports
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00203242
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 6 1994 12:00AM