TRACK CIRCUIT CHARACTERISTICS ASSOCIATED WITH MOTION MONITORING

Motion monitoring devices have been developed to provide warning activation at grade crossings by signaling the actual approach of a train because conventional crossing protection systems are unable to differentiate between a stopped and moving train. The motion monitor detects the rate of change of track impedance to indicate train movement In the design, the frequency ballast, distance to train and terminating shunts and their effect on the motion sensing equipment must be considered. Problems can be encountered with broken rail protection.

• Supplemental Notes:
  • Presented to the Committee "D" Workshop, Association of American Railroads, Communications and Signal Section, at the 1975 Annual Meeting, New Orleans, Louisiana.
• Corporate Authors:

  Westinghouse Air Brake Company

  Wilmerding, PA  United States 
• Authors:
  • Blazek, F V
• Publication Date: 1975-10

Media Info

• Features: Figures;
• Pagination: 12 p.

Subject/Index Terms

• TRT Terms: Detectors; Grade crossing protection systems; Safety; Signal devices; Track circuits; Warning systems
• Old TRIS Terms: Grade crossing protection
• Subject Areas: Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00141428
• Record Type: Publication
• Report/Paper Numbers: Bull. N. 310 Conf Paper
• Files: TRIS
• Created Date: Nov 3 1976 12:00AM