In a past post I wrote about snow on traffic signal lights and how the light bulbs in older signals were warm enough to melt away snow that may land on the signal. The new LED lights used in many signals has a new challenge. The LED lights are cool so, snow tends to stay on the signals. I thought I would share a solution that addresses this challenge.
I came across a low tech solution sold by McCain (a large traffic signal supplier whose products are widely used in Minnesota). Their Scoop Tunnel Visor has a beveled opening that provides air circulation around the LED lights which reduces snow build up. They cost about $20 each (which isn’t much of an up-charge if they are being put on new signals instead of the standard visor).
The Colorado Department of Transportation (CDOT) has been using the scoop visor and seems to think they work. According to CDOT spokeswoman Mindy Crane – “They’ve helped immensely in terms of keeping the snow off the traffic lights. It’s not high-tech and it’s very economical.”