Despite the many benefits of LED light bulbs (low energy, high lumen, long-life etc.) there appears to be another. The technology will be used to detect criminal activity in Copenhagen. A streetlight experiment conducted in the suburban area of Alberslund involving a variety of vendors and developers fitting lamps with sensors and controls that will show how LED light bulbs perform in different environments and support 'smart city' functions. The experiment is run by Danish Outdoor Lighting Lab (DOLL) and is scheduled to open the 18th of September. Hundreds of lamps placed along 5 miles of road in a half mile square area of an industrial park will have a unique internet address so that they can feed information back to monitors. One of the vendors is Tvlight who are using the experiment to test a lamp that changes brightness in response to motion detection. The Technical University of Denmark (DTU) will power lamps with wind and solar energy. Other vendors participating in the experiment are Philips, Osram, Luminex, Fagerhult, Thorn and others. Project Manager, Flemming Madsen, described the project as an "urban playground" and went on to say it will attract lighting engineers, designers and officials from around the world. A project partner, John Baekelmans, said: "People don't want to solve one issue and then have to do a major investment again to solve the next issue and the next and the next. There is a variety of technologies which you need to tie together in a way to make it a seamless experience." "You can say that we are an instrument of the green transition," added Madsen.