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Street lights can be made intelligent by placing cameras or other sensors on them, which enables them to detect movement (e.g. Sensity's Light Sensory Network, GE's "Currents", Tvilight's CitySense). [5] [6] Additional technology enables the street lights to communicate with one another. Different companies have different variations to this ...
Romanian and US research teams believe that the time spent by motorists waiting for lights to change could be reduced by over 28% with the introduction of smart traffic lights, and that CO 2 emissions could be cut by as much as 6.5%. [4] A major use of Smart traffic lights could be as part of public transport systems.
Lights are timed in such a way that motorists can drive through without stopping if their speed is lower than a given limit, mostly 50 km/h (30 mph) in urban areas. This system is known as "grüne Welle" in German, "vague verte" in French, or "groene golf" in Dutch (English: "green wave"). Such systems were commonly used in urban areas of the ...
Lighting control systems are sometimes referred to under the term smart lighting. Lighting control systems serve to provide the right amount of light where and when it is needed. [1] Lighting control systems are employed to maximize the energy savings from the lighting system, satisfy building codes, or comply with green building and energy ...
A number of street light control systems have been developed to control and reduce energy consumption of a town's public lighting system. These range from controlling a circuit of street lights and/or individual lights with specific ballasts and network operating protocols.
They are useful in regulating traffic when the primary system fails. The control system in the auxiliary traffic light monitors the primary system and when the primary system fails, it switches to the auxiliary system. Switching from primary system to the auxiliary system and vice versa can also be achieved using a hand-held transmitter unit. [7]