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I'm not sure what the point was in the first place? Sodium lamps approach 200 lumens/watt. LEDs are whiter, but whiter light doesn't necessarily help you drive,
by scythe 10y ago
I'm not sure what the point was in the first place? Sodium lamps approach 200 lumens/watt. LEDs are whiter, but whiter light doesn't necessarily help you drive, does it? If the concern is colored signs, light the signs?
- jacobolus 10y agoBig point #1 was federal subsidies and big new contracts for lighting vendors. Big point #2 (an actual advantage now) is reduced maintenance cost because the lamps (theoretically) last longer between replacements. The energy efficiency claims were always a red herring.