P&LE UPGRADES CROSSING PROTECTION

In the course of installing welded rail, the Pittsburgh & Lake Erie was confronted with eight grade crossings in a 1 1/2-mile stretch. The goal was to produce a safe system that would not unduely delay vehicular traffic. Audiofrequency overlays of the conventional type would have been extremely complicated. The solution was installation of electronic movement detection through measurement of rail impedance changes. Several frequencies are overlapped for some distance beyond the crossings.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4175009
• Corporate Authors:

  Murphy-Richter Publishing Company

  20 North Wacker Driver
  Chicago, IL  United States  60606
• Publication Date: 1975-8

Media Info

• Features: Photos;
• Pagination: p. 43-44
• Serial:
  • Progressive Railroading
  • Volume: 18
  • Issue Number: 8
  • Publisher: Trade Press Publishing Corporation
  • ISSN: 0033-0817
  • Serial URL: http://www.progressiverailroading.com

Subject/Index Terms

• TRT Terms: Grade crossing protection systems; Track circuits; Warning systems; Welded rail
• Identifier Terms: Pittsburgh and Lake Erie Railroad
• Old TRIS Terms: Audio frequency track circuits; Grade crossing protection
• Subject Areas: Operations and Traffic Management; Railroads;

Filing Info

• Accession Number: 00099799
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 18 1976 12:00AM