‘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

  • Congatec rugged computing power makes Intertraffic debut
    April 6, 2016
    Computer hardware specialist Congatec is making its first appearance at Intertraffic, exhibiting products at the cutting edge of modern computing power. So far, footfall and interest generated at the company’s stand has been very good, said Congatec marketing director Christain Eder.
    Read More
  • IBT goes roundabout in Bradenton, Florida
    May 10, 2019
    Yet another roundabout is being built in the US. The public remains sceptical but agencies and contractors are on board, writes David Arminas Global construction company IBT, based in Miami, has won a contract to install a traffic circle – or roundabout - on State Road 64 near Bradenton, Florida. The deal is part of a road improvement project with the Florida Department of Transportation (DoT). The 13-month project started in November. Worth only $5 million, it is not a big infrastructure contract. But
    Read More
  • Canadian authorities convinced of enforcement safety benefits
    November 28, 2012
    Cost-benefit analysis invariably finds highly in favour of speed and red light enforcement, particularly so in Edmonton in the Alberta province of Canada, where authorities need no convincing of the merits of road safety engineering. Justification of enforcement efforts on economic grounds has been reinforced this year, by a study of the costs and benefits of red light enforcement. New York-based economic research firm John Dunham & Associates carried out this latest analysis for American Traffic Solutions
    Read More
  • Bringing enforcement standards into line
    March 1, 2013
    Difficulties with the apparent accuracy of enforcement systems have been making the headlines in the United States over recent months. Jon Masters investigates the causes and possible cures. Online newspaper reports in the United States over recent months have painted a picture of the authorities struggling to keep on top of their speed and red light enforcement pro­grammes. Among a host of stories put out by the Washington Post and others on the subject of speed cameras during January, there were reports
    Read More

Highlighted Content