Question

 How the street lights know when to change?

Answer Either through sensors located in the road, a set timer, or through cameras.
http://answers.yahoo.com/question/index?qid=20090622060202AAWmE78

Top Q&A For: How the street lights know when to change

When were street lights invented?

The first ever streetlights put into use were on London's Pall Mall. They were first lit on Jan 28, 1807 and lead the way for other towns to take up gas street lighting. In the early days a lamp li... Read More »
http://www.answerbag.com/q_view/2265789

When did NYC get electric street lights?

Thomas Edison put the first electric streets lights in New York City during the summer of 1881. To power the street lights, Edison installed six dynamos that supported an output of 100 kilowatts ea... Read More »
http://www.answerbag.com/q_view/2140827

Why Can't Street Lights be White?

The newest generation of street lighting does in fact use high efficiency white LED technology with an excellent lumen per watt ratio and very long life expectancy's - but it will take 10 to 15 yea... Read More »
http://answers.yahoo.com/question/index?qid=20090903125403AA1f9p3

Who invented street lights?

Although Benjamin Franklin is often credited with the invention of the street light, gas-lit street lamps debuted in Pall Mall, London, in 1807. More than a half century later, electric arc street ... Read More »
http://www.answerbag.com/q_view/2059592


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