Street lights over time

So growing up I remember these street lights:

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Then into the 1970’s and they got replaced with High and Low Pressure sodium lights that cast an orange glow over everything.

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And finally, here in the 21st century there’s a little bit of a change taking place. now we’re seeing LED based street lights – with their bright white light illuminating our highways and biways.

Well this photo tells the whole story. Look at the difference between LED and HPS.

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And here’s what the LED light look like. These are slightly different from the ones National Grid has going bonkers installing in my neighborhood. So too has the MBTA – all their trackway lighting in Boston  is now LED based.

cree-led-streetlight

In fact that above – it’s $100. So better light, energy efficient and less expensive. Why wouldn’t the incumbent electric power utility choose this?

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2 thoughts on “Street lights over time

  1. I’d love it even more if they could come up with a design that focused light down to reduce light pollution and give everyone a chance to see the night sky better.

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