AUTOMATIC WARNING OF TRACK MAINTENANCE GANGS. ENQUIRY INTO THE USE OF ACOUSTIC AND VISUAL WARNING DEVICES

This report contains the evaluation of the enquiries addressed to the Member Administrations of ORE concerning the state of progress of different acoustic and visual devices to warn track maintenance gangs. Most of the acoustic warning devices are air operated. In addition to the oral horns with a sound intensity of about 80 to 100 dB, which are still frequently used, warning devices operated by manual pumps with an air reservoir and those with compressed air containers are employed. The sound radiated by them varies between about 110 and 120 dB. The frequencies of the warning signals differ very much. A few Railway Administrations also use visual warning signals. These are either variations in the illumination of the working site or flashing lights. The report also includes conclusions referring to the need for further studies.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1973-4

Media Info

• Features: Appendices;
• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Acoustic equipment; Audible warning devices; Crash avoidance systems; Warning signs; Warning systems
• Old TRIS Terms: Acoustic warning systems; Automatic warning systems; Question a124; Visual warning systems
• Subject Areas: Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00052512
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: A124/RP3/E
• Files: TRIS
• Created Date: Jun 24 1976 12:00AM