PHOTOMETRIC REQUIREMENTS FOR LONG-RANGE ROAD TRAFFIC LIGHT SIGNALS
This paper extends the research on photometric requirements for normal urban vehicular traffic light signals to those for long-range signals on high-speed roads. The theoretical requirements are compared with the luminous intensities of currently available signal hardware. It is shown that commercially available equipment can currently meet the proposed minimum intensity levels, but further work is necessary to develop a suitable refrator to give a performance margin to cover deterioration in service. This work was done to assist the Standards Association of Australia Committee LG/6 in the preparation of a new Australian Standard for Road Traffic Signal Equipment.
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ARRB Group Ltd.Vermont South, Victoria Australia
- HULSCHER, F R
- Publication Date: 1975-5
- Features: Figures; References; Tables;
- Pagination: 9 p.
- Australian Road Research
- Volume: 5
- Issue Number: 7
- Publisher: ARRB Group Ltd.
- ISSN: 0005-0164
- TRT Terms: Brightness; Drivers; High speed ground transportation; High speed vehicles; Photometry; Reaction time; Speed; Traffic signals
- Uncontrolled Terms: Driver reaction
- Subject Areas: Highways; Operations and Traffic Management; Railroads;
- Accession Number: 00132122
- Record Type: Publication
- Source Agency: Highway Safety Research Institute
- Files: TRIS, ATRI
- Created Date: Oct 29 1977 12:00AM