Reading Comprehension

Read the text and answer the question.

The city of Vasterholm recently replaced its aging streetlights with sensor-equipped LED fixtures. Unlike the old lamps, which burned at full strength all night, the new lights dim to twenty percent brightness when no movement is detected. They brighten only when a pedestrian, cyclist, or vehicle approaches. Officials report that energy use along main roads has fallen by nearly half. Residents initially worried that the dimmer streets would feel unsafe, but a survey conducted six months after installation found that most people no longer noticed the change during their evening walks.