GFZ research shows little impact by LED street lights on sky glow

The GFZ German Research Centre for Geosciences has published research on the impact of LED street lights on sky glow and the dark sky.

By analyzing the data based on different operational intensity of the street light system, the team determined that only 20% of the light produced at night in Tucson comes from street lights.

The team said lit signs and façades, brightly-lit shop windows, lit sports fields, and other sources are the prime culprits in light pollution.

The team also asserted that there was no evidence that reducing light levels to 30% impacted safety in the city. The city residents didn’t seem to take note of the changes.