Update of Experiments at the Revenue Service Mega Sites

Revenue service testing by Transportation Technology Center, Inc. at the eastern and western mega sites continues to determine the effects of heavy axle loads (HAL) on track infrastructure and to monitor performance of new technologies and designs intended to improve train operation safety and to mitigate detrimental effects of HAL on the track structure. The Federal Railroad Administration and the Association of American Railroads co-sponsor this research. These two mega test sites were established in 2004 and every year a number of experiments are conducted to address various HAL operation issues. Some experiments are long term, taking a few years to complete and may be conducted in phases. This paper is a summary of findings from experiments conducted in 2008 and the first quarter of 2009. These include experiments on premium rails, wide-gap welds (WGW), insulated joints (IJ), rail anchors on concrete ties, plastic ties, elastic fasteners, and bridge approach remedies.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Maps; Photos; References;
  • Pagination: 4p
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01143747
  • Record Type: Publication
  • Report/Paper Numbers: RR09-15
  • Files: TRIS
  • Created Date: Nov 4 2009 3:02PM