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- W577102589 abstract "Lighting is often installed at rural intersections to improve the safety of night traffic operations at these locations. However, there are no generally accepted design criteria that define the levels of illumination required at rural intersections. The objective of this research was to evaluate the cost-effectiveness of rural intersection levels of illumination. Six lighting systems were installed at a rural, unchannelized intersection of two two-lane highways. Speedprofile and traffic-conflict studies were conducted on an uncontrolled approach to the intersection. The studies were conducted at night at each level of illumination as well as with no lighting. The data were analyzed to determine the safety- and cost-effectiveness of each level of illumination. The results of the research indicated that, for a given luminaire wattage, two-luminaire systems provided safer traffic operations than did one-luminaire systems; and the safest operations were observed under a two 200watt high-pressure-sodium (HPS) luminaire system. The results of the cost-effectiveness analysis revealed that lighting was not warranted at rural intersections with main highway average daily traffic less than 3,250 vehicles per day. At higher volume intersections a two 200-watt HPS luminaire system was the most cost-effective." @default.
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- W577102589 date "1984-01-01" @default.
- W577102589 modified "2023-09-24" @default.
- W577102589 title "COST-EFFECTIVENESS EVALUATION OF RURAL INTERSECTION LEVELS OF ILLUMINATION" @default.
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