Old USA street lighting found in The Netherlands

[old_tv_nut]

By "orange" I think Electronic M probably meant warm white (is that correct, or really orange?).

Regarding failure:
White LEDs consist of a blue LED chip with a phosphor to fill in the rest of the spectrum. It is possible for the phosphor to degrade over time, changing the color of the light somewhat. Some white LED backlight strips for LCD monitors/TVs have shown a failure mode in which some individual LEDs become dark blue. This has been discussed online (here or on YouTube, I don't recall), but I have not seen an explanation of the failure mechanism.

[marcel]

Here in the Netherlands it does go wrong, LED street lighting changes color. Street lighting here with the option of various light colors, white to amber. Sometimes when the settings are lost you get different light colors in the street. Filters also come loose, causing the blue light to reach the street. With mercury and sodium you will get few color deviations, only at start-up.

[Electronic M]

Originally Posted by old_tv_nut

By "orange" I think Electronic M probably meant warm white (is that correct, or really orange?).

Regarding failure:
White LEDs consist of a blue LED chip with a phosphor to fill in the rest of the spectrum. It is possible for the phosphor to degrade over time, changing the color of the light somewhat. Some white LED backlight strips for LCD monitors/TVs have shown a failure mode in which some individual LEDs become dark blue. This has been discussed online (here or on YouTube, I don't recall), but I have not seen an explanation of the failure mechanism.

It's orange like the old high pressure sodium(?) lighting that it replaced...Some of them HAVE FADED to warm white and bluish white but most that have failed failed blue like in the pictures subsequently posted.

[jr_tech]

Originally Posted by marcel

Street lighting here with the option of various light colors, white to amber. Sometimes when the settings are lost you get different light colors in the street.

So are you indicating that each individual LED street light can be set or programmed to amber or white, and possibly a range in between ?

jr

[marcel]

This is a separate option, so not in all fixtures. With a computer you can control the strength of the light between the amber and the white LEDs.

[old_tv_nut]

Originally Posted by marcel

Here in the Netherlands it does go wrong, LED street lighting changes color. Street lighting here with the option of various light colors, white to amber. Sometimes when the settings are lost you get different light colors in the street. Filters also come loose, causing the blue light to reach the street. With mercury and sodium you will get few color deviations, only at start-up.

It appears that the color choice is made by mixing white and amber, rather than cool white and warm white - that's my guess from the photos. So, if the white fails or is turned off completely, you get amber.

[old_tv_nut]

Question: do they ever change the color by time of night, for example, whiter for better visibility in the early evening traffic, then amber for sleeping hours?

[marcel]

Here in the Netherlands there are streets in the evening and in the morning where the fixtures give white light and at night to amber. These can be programmed, but can also be controlled remotely via wireless telephone network. It is an expensive system, which means that it is not widely used. In a village nearby, the street lighting is mostly set to amber during the Christmas season.

There is much more.

https://www.youtube.com/watch?v=a-WvawLns6c

[Dude111]

Originally Posted by Electronic M

These are everywhere in the USA (literally rode past one in the passenger seat as I type this on my phone), though they are starting to be replaced by LED fixtures.

Yes which look like crap!!!

Why take something that works perfectly and replace it with garbage!!! -- WAIT I KNOW THE ANSWER!!



I hope they dont ever change them............

[Telecolor 3007]

L.E.D., per se, it isn't crap. But some administrations are choosing the cheap ones, sometimes this meaning not only bad qualty, but also ugly color temperature. I don't know why they are so stupid.

[Electronic M]

The big problem with LED here is a lot of the cheap ones don't survive. They'll start out bright with a good color temperature then within a year they'll start turning blue or purple....Throw in some fog and suddenly night driving has an unwelcome horror movie aesthetic.

[zeno]

Originally Posted by Telecolor 3007

L.E.D., per se, it isn't crap. But some administrations are choosing the cheap ones, sometimes this meaning not only bad qualty, but also ugly color temperature. I don't know why they are so stupid.

In the US they are paid to be stupid ! Very few have any common sense or
science knowledge. Also no understanding of the common man.

73 Zeno
LFOD !

[Telecolor 3007]

So poor qualty of them is a problem in U.S.A. too...