The 25000th series Cxx0x traffic controller left the Siemens plant in Augsburg in November 2012. The type C940ES the most modern Siemens controllers in this series will be used to control the traffic lights at all the crossroads in the Glückstein district of Mannheim. Since 1965 the factory in Augsburg produces with around 70 employees components for traffic and tunnel control systems. 

By modernizing the traffic control system Siemens is making a major contribution toward reducing pollution and increasing traffic safety in the city of Mannheim.

The type C940ES used in Mannheim is specifically designed to meet the requirements for controlling 40-volt LED (light-emitting diode) lighting equipment which saves up to 90 per cent of the energy consumed by the conventional bulbs previously used. The high safety level of the controllers installed in Mannheim will check changes in the behavior of the LED signals at the extremely rapid rate of 1000 times per second and report any conflicting signal states and defective lamps.

Controllers have to be able to meet demands which vary throughout the world. They are therefore specifically adapted to meet an extremely wide range of local infrastructural conditions. More than 200000 traffic controllers in over 22 countries on three of the world’s continents are controlling traffic light phases on a daily basis – safely reliably and in response to traffic conditions. The devices are designed to work in ambient temperatures from minus 25 degrees to plus 50 degrees Celsius. They are in operation in St. Petersburg the most northerly city with over one million inhabitants in the world as well as in the arid desert climate of Abu Dhabi.

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Original Publication Date: Tue 11 Dec 2012