VISIBILITY DETERMINATION IN ROAD TUNNELS

SICHTWEITENBESTIMMUNG IN STRASSENTUNNELN

This paper deals with clouding in road tunnels which is caused mainly by the emission of soot from diesel vehicles. A method of calculating visibility distance based on optical principles and measurements is given, which gives the permissible clouding factor for dimensioning the tunnel ventilation. In addition various measuring devices were installed for monitoring the tunnel. As a measurable variable the extinction coefficient was chosen. The report contains information about the effects on the tunnel lighting and the problem of selecting the hygienically acceptable maximum values. In addition measures of clouding, carbon monoxide emission and return-suction are listed. /TRRL/

• Corporate Authors:

  Ministry of Building and Technology, Austria

  Stuberring 1
  A-1010 Vienna,   Austria 
• Authors:
  • PISCHINGER, R
  • Puchwein, H
• Publication Date: 1977

Language

• German

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 3-50
• Serial:
  • Strassenforschung
  • Issue Number: 75
  • Publisher: Ministry of Building and Technology, Austria

Subject/Index Terms

• TRT Terms: Air pollution; Carbon monoxide; Diesel engines; Exhaust gases; Lighting systems; Measurement; Measuring instruments; Pollutants; Research reports; Street lighting; Tunnels; Ventilation systems; Visibility; Visibility distance
• Old TRIS Terms: Tunnel lighting
• ITRD Terms: 7391: Carbon monoxide; 1394: Catalytic converter; 1314: Diesel engine; 2442: Emission; 545: Lighting (street); 6136: Measurement; 8559: Research report; 3374: Tunnel; 3392: Ventilation; 6793: Visibility distance
• Subject Areas: Bridges and other structures; Design; Highways; Safety and Human Factors; I25: Design of Tunnels;

Filing Info

• Accession Number: 00189402
• Record Type: Publication
• Source Agency: Bundesanstalt für Straßenwesen (BASt)
• Report/Paper Numbers: Monog Ser.
• Files: ITRD, TRIS
• Created Date: May 11 1979 12:00AM