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4000K LEDs During the initial changeout in 2014, 4000K Philips Roadview RVS LEDs were used by Markham instead of 5000K and 6500K LEDs used in the more recent changouts. I wonder why they switched. Anyway along with the changeout, they also installed wireless controls (I believe made by Ripley) instead of standard PCs. Interestingly the fixtures on the overpass were wired for group relay control when it was built in 2000 but got bypassed in favour of individual PCs in the mid 2000s. Also note the lone HPS fixture on the signal pole. Markham likes to leave HPS fixtures on signal poles for some reason. Keywords: Lit_Lighting

4000K LEDs

During the initial changeout in 2014, 4000K Philips Roadview RVS LEDs were used by Markham instead of 5000K and 6500K LEDs used in the more recent changouts. I wonder why they switched. Anyway along with the changeout, they also installed wireless controls (I believe made by Ripley) instead of standard PCs.

Interestingly the fixtures on the overpass were wired for group relay control when it was built in 2000 but got bypassed in favour of individual PCs in the mid 2000s.

Also note the lone HPS fixture on the signal pole. Markham likes to leave HPS fixtures on signal poles for some reason.

MKM_PB246331.JPG MKM_CIMG_0395_M.JPG IMG_20141005_024509.jpg JPN_20170223_141927_HDR.jpg 20181202_163647.jpg
File information
Filename:IMG_20141005_024509.jpg
Album name:joe_347V / Sunsets and Night Scenes
Keywords:Lit_Lighting
Company and Date Manufactured:Philips Lumec, 2014
Model Number:Roadview RVS
Lamp Type:LED
Filesize:127 KiB
Date added:Apr 19, 2015
Dimensions:1621 x 1200 pixels
Displayed:213 times
Color Space:sRGB
Contrast:0
DateTime Original:2014:10:05 02:45:17
Exposure Mode:0
Exposure Program:Program
Exposure Time:1/10 sec
FNumber:f/2.4
Flash:No Flash
Focal length:3.97 mm
ISO:3200
Make:Lge
Max Aperture:f/2.4
Model:Nexus 5
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=19173
Favorites:Add to Favorites

Comment 1 to 5 of 5
Page: 1

streetlight98   [Apr 19, 2015 at 10:50 PM]
I personally think the 4000K ones look better. The 5000K and 6500K are too blue IMO. The higher color temps require less phosphor so maybe the fixtures end up being cheaper? I would like to see 3500K-4500K LEDs personally.

I like how the intersection is still HPS. Makes it stand out more.
GEsoftwhite100watts   [Apr 19, 2015 at 11:40 PM]
The ones I hate are the "Piss yellow" looking LEDs, those look ugly IMO. I don't mind cooler color temps though.
Model25FanForever   [Apr 20, 2015 at 12:11 AM]
I remember someone saying somewhere that sometimes they get "stuck" and they just leave it until it runs dead. I think it looks hideous when they leave a couple HPS lights in the mix lol.
streetlight98   [Apr 20, 2015 at 04:55 AM]
What do you mean they get stuck? What gets stuck?
joe_347V   [Apr 20, 2015 at 06:38 PM]
I'm guessing the relays or maybe the PC lol.

Yeah the I find the 4000K LEDs are more practical at night as they offer better visibility at night but the bluish have that cool faux MV vibe to them lol. I also like keeping intersections HPS, a nice modern twist on the 60s caution yellow concept lol.

Comment 1 to 5 of 5
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