‘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

  • Helieon LED light module
    February 2, 2012
    Bridgelux and Molex have introduced what they claim is the first LED lighting solution designed and priced to drive rapid, mass market adoption of LED lighting technology. At a volume price point at less than US$20 per unit, and a lifespan of more than 10 years, the partners claim the Helieon Sustainable Light Module is one of the industry's highest quality, most cost-effective solid state lighting solutions, and it will change the way LED lighting solutions are used.
    Read More
  • Tecsidel’s Pan-American Highway tunnel eases Lima’s traffic woes
    December 4, 2018
    The Pan-American Highway connects the US and Canada with Latin America, running for thousands of miles from Alaska in the north to Argentina in the south. Mauro Nogarin finds that one tunnel built underneath it is now providing relief for thousands of travellers each day On the Pan-American Highway, the lengthy series of roads which spans both American continents - from the US state of Alaska to the Latin American country of Argentina - ITS solutions are many and varied. One of these, in Peru’s capital
    Read More
  • First look at brand new IRD product
    May 31, 2016
    Visitors to ITS America 2016 San Jose will be the first to see a new product from International Road Dynamics – the company’s very recently announced light-weight, cost-effective, portable UVAS under-vehicle surveillance system. The real-time UVAS system is designed to provide an affordable, robust and dependable under-vehicle inspection process for all vehicle check points in any terrain – day or night. Global weigh-in-motion technology specialist IRD says it provides the perfect solution to scan, inspect,
    Read More
  • Vaisala: Weather data is vital for connected vehicles
    August 26, 2016
    Vaisala’s Dr Kevin Petty explains why the weather will continue to play a big part in road safety and traffic management in the smart cities of the future. The world is becoming increasingly connected. Thanks to advances in information and communications technology, the cities we live in are becoming ‘smart’, with everything from education to law enforcement managed by integrated tech solutions in a bid to improve quality of life.
    Read More

Highlighted Content