‘One-Watt’ traffic signals from Siemens

Small is big news on the Siemens stand as the company unveils its ultra-low consumption One-Watt technology for traffic lights. The move from incandescent bulbs to 230V LED lamp heads had seen an enormous reduction in power consumption (down from 60Watts per head to around 15W) but means the load resistors and switching elements in the signal units are often the biggest energy consumers.
April 6, 2016 Read time: 2 mins

Small is big news on the 189 Siemens stand as the company unveils its ultra-low consumption One-Watt technology for traffic lights. The move from incandescent bulbs to 230V LED lamp heads had seen an enormous reduction in power consumption (down from 60Watts per head to around 15W) but means the load resistors and switching elements in the signal units are often the biggest energy consumers.

With One-watt technology the use of 24V LEDs and digital driver modules has eliminated the need for load resistors and switching elements and means a complete signal head may require only one or two Watts to operate.

This provides huge benefits as a large city like Berlin can avoid some 2,000 tons of carbon emissions and save €500,000 in energy costs every year.

In cities still using conventional filament bulbs in their traffic lights, the potential savings are significantly higher and according to Siemens One-Watt technology traffic signals will typically pay for themselves in less than five years.

Furthermore, Siemens said its LED signals retain full light intensity and also reduce service costs and it monitors voltage, current and the luminosity of the LED units, adding that may become possible to predict when LED units will fail so enable preventative maintenance.

The first One-Watt pilot projects are running in Bolzano, Italy and in Bietigheim-Bissingen near Stuttgart in Southern Germany.

For more information on companies in this article

Related Content

  • Timing is everything for EV charging
    January 23, 2020
    Electric vehicles are often promoted as a more sustainable alternative to diesel and petrol cars - but their arrival raises concerns about the strain which charging will put on the grid.
    Read More
  • Lacroix Trafic launches Geronimo system
    March 25, 2014
    France-headquartered Lacroix Trafic is here at Intertraffic to launch the latest in its line of Alumix products – the Geronimo traffic signal totem pole. Using high emitting flux LEDS to ensure very low power consumption and controlled maintenance costs, the new totem is an energy performance asset. Manufactured using single aluminium profile housing, the company says the elegance of its totem traffic signal pole fits nicely into all types of city and architectural environments, while providing excellent vi
    Read More
  • Siemens pushes smart learning through knowledge centre
    April 4, 2016
    The Siemens stand at Intertraffic is always much more than a place where products and systems are displayed. This year is no exception. Think of Stand 209 in Hall 11 as a knowledge centre, a smart learning place, a time machine that opens up views into the future and much more.
    Read More
  • IAM RoadSmart calls for joined up thinking on road safety
    October 12, 2016
    Action is needed from across government departments to reverse the trend of flat-lining road deaths, according to new research from UK road safety charity IAM RoadSmart, which says reducing these deaths would in turn offer a large saving to the public purse. The new report, Evaluating the costs of incidents from the public sector perspective, is the first attempt to update the formula for death and injury cost figures since the 1990s. It is also the first time anyone has highlighted the costs to the publ
    Read More

Highlighted Content