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Old 04-02-2019, 07:47 PM   #41
F-Line to Dudley
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Re: Big Dig Tunnel--

Originally Posted by SeamusMcFly View Post
Wouldn't photo cells (like we use in every building) be the smart solution here? Only on when needed, and dimmed as appropriate based on light levels.
The orange daylight lights in the tunnels are currently low pressure sodium tubes, which take several minutes to warm up. If the upcoming tunnel lighting replacement is LED then they'd have a lot more flexibility in how the lighting is diffused.

I doubt "as needed" really applies to any of the Boston tunnels, though. Traffic is steady 24/7 including wee hours of the morning, so the only settings they have to get right are dusk & dawn.
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