HIGH-MAST INTERCHANGE LIGHTING

IN ADDITION TO ITS OTHER ADVANTAGES, HIGH-MAST LIGHTING ELIMINATES THE GLARE RESULTING FROM WET PAVEMENT OR SUSPENDED WATER DROPLETS IN WET OR FOGGY WEATHER, AND RAISES TO A HEIGHT WHERE IT IS NO LONGER DISTRACTING THE HALO THAT SURROUNDS LUMINAIRES IN DAMP CONDITIONS. THIS ADVANTAGE IS PARTICULARLY VALUABLE IN RAINY CLIMATES. THE FIRST HIGH-MAST INSTALLATION IN OREGON IS AT A TRUMPET INTERCHANGE OF TWO INTERSTATE HIGHWAYS. A LUMINAIRE HEIGHT OF 125 FEET ABOVE THE ROAD SURFACE WAS CHOSEN. THE ELEMENTS OF THE LIGHTING SYSTEM ARE DESCRIBED BRIEFLY. OVERALL COST WAS 6% HIGHER THAN THAT OF A CONVENTIONAL SYSTEM OFFERING ACCEPTABLE PERFORMANCE. THIS SMALL COST DIFFERENTIAL, COUPLED WITH THE OPERATIONAL ADVANTAGES OF HIGH-MAST SYSTEMS, HAS LED THE STATE HIGHWAY DEPARTMENT TO PLAN SUCH INSTALLATIONS FOR ALL MAJOR INTERSTATE JUNCTIONS WITH TRAFFIC LEVELS HEAVY ENOUGH TO WARRANT THEM.

• Publication Date: 1973-1

Media Info

• Features: Photos;
• Pagination: 43 p.
• Serial:
  • Lighting Design and Application
  • Volume: 3
  • Issue Number: 1
  • Publisher: Illuminating Engineering Society

Subject/Index Terms

• TRT Terms: Driver performance; Drivers; Driving; Fog; High mast lighting; Moisture content; Personnel performance; Street lighting
• Uncontrolled Terms: Driving conditions; Wet conditions
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00222102
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 13 1973 12:00AM