Must be a Sun-Tech photocell since the cover's missing.
Here RIDOT is using LeoTek Green Cobra lights (the ones that look like toilet seats lol). They actually don't look bad on the freeway davits, though maybe it's because I pass them at 75MPH and aren't really looking closely at them when I'm driving. The city of Providence is using Cree LEDs for their changeout. And the municipal utility in the NW corner of the state is using a mix of LEDs, though quite a few AEL Autobahns and AEL LEDs with the bucket optic option (no bucket though). They're also used those stupid LED yardblasters lol.
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Here RIDOT is using LeoTek Green Cobra lights (the ones that look like toilet seats lol). They actually don't look bad on the freeway davits, though maybe it's because I pass them at 75MPH and aren't really looking closely at them when I'm driving.