Siemens Presents the World's Thriftiest Traffic Light - Energy Watch News

Siemens Presents the World’s Thriftiest Traffic Light

This has been made possible by installing so-called “1-watt technology”. One-watt technology uses digital LED driver modules. This eliminates the need for load resistors and switching elements in the signal light units which until now have consumed most of the energy. Compared with the 60 watts sometimes consumed by incandescent bulbs, the electricity required by individual traffic light signals can be slashed to just one or two watts. State-of-the-art LEDs with extremely low power consumption still retain full light intensity. In addition to power costs, the 1-watt light units also reduce service costs. Optical monitors continuously check the state of the LEDs.

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