The lights of cities are permanently on at night, without real need if there is no of passage. This produces a considerable waste of energy, but also of pollution light that disrupts ecosystems. “A more starry sky” is designed to equip streets with presence detectors. Autonomous and centralized control systems allow to control the ignition times and to modulate the illuminance values according to the needs. When a car or pedestrian is moving through the city at night, the light will turn on to the European Commission’s Energy Strategy, which is a operations and maintenance, while contributing to a more attractive environment and more secure.