Things of signs to come: New LED street light

Things of signs to come: New LED street light

Summary: LED lamp for lighting road signs boasts 60 percent to 70 percent energy savings over traditional rivals.

TOPICS: Tech Industry

I've traveled enough around the United States to know there are places that have great road signs and others where you wind up groping around in the dark, until suddenly you're past your exit and the drivers behind are making rude gestures toward your rear view mirror. Streetlights are notoriously unreliable, and the ones illuminating highway signs even moreso.

LED maker Dialight would have you believe, however, that the new Streetsense RS Series LED Roadway Sign Light (pictured) could keep you headed in the right direction.

The technology is meant to replace the 250-plus-watt fixtures that are used commonly for road sign lighting, offering an energy savings of approximately 60 percent to 70 percent. The lights come in rugged housings to deal with weather, corrosion and highway "shock." They have a projected life span of about 10 years, and can hold onto about 70 percent of their lumens after 60,000 hours of operation. That means that road crews won't have to replace the bulbs as often. The company is selling a retrofit kit for converting existing lamp fixtures.

Topic: Tech Industry

Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.


Log in or register to join the discussion
  • Who cares?

    Why is this on here, should it be on a site that
    sells light bulbs...
    • Because its technology

      And ZDNet is a technology news/blog site not just technology that deals with computing. Don't like the article don't read it.
  • RE: Things of signs to come: New LED street light

    The problem is the with LED lights, they don't generate heat and fail when covered in snow. They are having this issue with the LED street signals, they get packed with snow and you can't tell what color the light is. It's a great technology, just needs a better delivery system.
    PC Developer
    • Actually, since the LEDs do not melt the snow in the first place, there are

      more scenarios where they perform better than the incandescents, as the snow just falls off.
  • Just get rid of them.

    How about just phasing out a lot of street signs in favour of GPS?
    • Great idea! Well, at least make fewer and smaller signs. You still need

      minimal verification at times. But, GPS has to get a
      little cheaper more common.
  • RE: Things of signs to come: New LED street light

    Will this new LED street light suffer the same issues that plagued some of the LED stop lights? As in, they won't melt the snow?
    Loverock Davidson
    • Actually, in most cases, it is better if you do not melt the snow in the

      first place, as it will blow off. If you melt
      it, as it gets colder, it starts to stick, and
      then the layer freezes. So, for most scenarios,
      LED is better, but, for some, incandescent is
    • It's about 80 watts.

      Replaces a 250 watts device and saves up to 70% of power.

      An 80 watts incandescent lamp gets plenty hot...

      Also it runs Windows!

      No it doesn't! It's running Linux for Lighting!
      Robert Carnegie 2009
    • LEDs and heat

      These are MUCH higher power than the LED traffic signal lights. A 70 or 80 watt LED fixture will generate plenty of heat to melt snow. I build custom high power LED lighting systems and I can tell you that getting rid of the heat from high power LEDs is THE major issue with designing LED luminaires.
  • RE: Things of signs to come: New LED street light

    While the road crews are at it, maybe they could also aim a few lights on the lines on the highways! It seems to me that the whites and yellows used to paint the road lines are nowhere near as bright/reflective as they were once upon a time.
    Also, let's minimize the number of directional signs that can be placed on one pole, sheesh...

  • cool


    Are they more reliable in cold weather? We've tried both regulars and CFLs, and both seemed to go out quickly during this winter.