The purpose of this DDOT pilot project was to determine a suitable replacement for a typical 150W HPS fixture on local residential streets and alleys in the District of Columbia. The replacement fixture must provide for at least a 40% energy savings. In this case, that means the entire lighting fixture must consume no more than 85 Watts. The fixtures were evaluated based on BSL mechanical, electrical and lighting standards, as well as newly introduced and accepted LED standards from the SSL industry. The evaluation also considered field tests as well as initial appearance preferences of local residents and DDOT technicians. The results of these evaluations were a major factor in determining which LED product will be considered for further evaluation in the pilot program.
Solid state lighting technology is advancing rapidly to a point where light emitting diode (LED) lightingsystems can be viable replacements for existi...
This report provides information on the design considerations of the embedded highway lightingdesign on Interstate-25 in Trinidad, Colorado, in terms ...
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