Over the past 5 years the most advanced intelligent street lighting in the world has been built and tested in Oslo. The project ”Intelligent street lightning” has demonstrated that energy consumed by street lightening can be reduced by as much as 70 %. Each lamp can be stepless and individually dimmed according to traffic, climatic conditions etc. During periods of low traffic volume or reflective snow cover there is less need for illumination and the system responds intelligently. In addition gradual dimming prolongs the life expectancy of lamps and equipment. Intelligent lightening reduces CO2 emissions and saves money. The project received the EU ”GreenLight award” in 2006.