Energy considerations are causing railroads, especially East Coast commuter lines, to reconsider electrification of main lines to replace or partially replace diesel-electric power. Among the secondary benefits, reduction in wayside noise is often cited as a significant environmental improvement. The noise problem may be more complex than assumed at first glance. Using a recently developed prediction model based on the highway noise computer model developed by the Transportation Research Center of the U.S. Department of Transportation, it is shown that wayside noise is strongly dependent on higher speeds attainable as a result of the track improvements associated with electrification . The exhaust noise from the diesel electric locomotive is replaced by wheel/rail noise which can at higher speeds be a more significant noise source. Replacement of the diesel-electric locomotives by high speed electric locomotives may show benefit only in that the new source is closer to the ground and as a result is subject to ground effects and shielding.

Media Info

  • Features: Figures; References;
  • Pagination: p. 191-196

Subject/Index Terms

Filing Info

  • Accession Number: 00152440
  • Record Type: Publication
  • Source Agency: Institute of Noise Control Engineering
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: May 11 1977 12:00AM