A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Supplementary Studies in Highway Illumination
A study was initiated to investigate existing practices in continuous and interchange lighting of highway facilities and to develop improved methods that will reduce glare, improve uniformity of illumination, and offer greater safety to highway users. Studies were conducted to determine the effects of lighting system geometry on illumination, pavement brightness and disability veiling brightness (DVB) produced by various light sources. The lighting systems tested included one-side, median, and staggered lighting systems with 400- and 1000-wat luminaires. Also studied and presented are facts concerning the effects of lighting system geometry on roadside sign visibility. It was found that mounting height definitely has an effect on visibility and legibility of roadway signs. From studies involving the installation of high-mast illumination towers at two interchanges, it was concluded that this was a very effective means of illumination and is superior to conventional systems. Various luminaire support designs were studied, in order to produce a design which would substantially reduce the severity of collisions with luminaire supports. As a result, the slip base design proved feasible for a multi-directional breakaway base for luminaire supports. (Author)
Supplementary Studies in Highway Illumination
A study was initiated to investigate existing practices in continuous and interchange lighting of highway facilities and to develop improved methods that will reduce glare, improve uniformity of illumination, and offer greater safety to highway users. Studies were conducted to determine the effects of lighting system geometry on illumination, pavement brightness and disability veiling brightness (DVB) produced by various light sources. The lighting systems tested included one-side, median, and staggered lighting systems with 400- and 1000-wat luminaires. Also studied and presented are facts concerning the effects of lighting system geometry on roadside sign visibility. It was found that mounting height definitely has an effect on visibility and legibility of roadway signs. From studies involving the installation of high-mast illumination towers at two interchanges, it was concluded that this was a very effective means of illumination and is superior to conventional systems. Various luminaire support designs were studied, in order to produce a design which would substantially reduce the severity of collisions with luminaire supports. As a result, the slip base design proved feasible for a multi-directional breakaway base for luminaire supports. (Author)
Supplementary Studies in Highway Illumination
N. E. Walton (author) / N. J. Rowan (author)
1969
87 pages
Report
No indication
English
Supplementary Studies in Highway Illumination
| NTIS | 1967
Studies in street and highway illumination -- I
| Engineering Index Backfile | 1935
Studies in street and highway illumination -- II
| Engineering Index Backfile | 1935
Studies in street and highway illumination -- III
| Engineering Index Backfile | 1936